7723

• UCREFRP Catalog Number: 7723
• Author: Snyder, D. E. and R. T. Muth
• Title: Editor
• USFW Year: Series
• USFW - Doc Type: 1990
• Copyright Material: NO

a. essentially straight or with bend less than
900 (gut phase 1) ..... . . . . . . . . . . . . 88
b. with at least 9O"bend or partial s-shaped
loop (gut phase 2) ................ 90
c. with full loop (s-shape to near anterior
end of visceral cavity) but with neither
limb of loop completely across ventral
midline (gut phase 3) or with at least
one limb of loop fully across ventral
midline but not yet with both limbs
across fully to opposite side (gut phase
4) ................... C. discobolus

88 (87). Pigmentation of peritoneum
a. absent on lateral and ventro-Iateral sur-
faces (Figs. 17, 59) . . . . . . . . . . . . . . . . 89
b. at least sparse or patchy on lateral sur-
faces only (Fig. 18) . . . . . . . . . . . C. ardens

89 (88). Principal dorsal fm rays
a. present (at least one) but full comple-
ment incomplete or unclearly formed . 150
b. present with full (adult) complement
clearly formed and countable (principal
fm rays are sufficiently formed when the
last principal ray, which consists of two
separate ray elements or "branches"
based on the most posterior pterygio-
phore, is well defmed) ........ C. ardens

90 (87). Dorsal surface lateral to midline from
shortly behind head to about 2/3
distance to last myomeres with
a. distinct continuous or nearly continuous
lines of melanophores along (parallel to)
each side of dorsal midline (Fig. 17)

. . . . . . . . . . . . . . . . . . . . . . C. ardens
b. distinctly shorter or discontinuous lines
of melanophores along one or both sides
of dorsal midline or with no distinct
lines of melanophores along either side
of dorsal midline (Figs. 44, 45) ....... 91

91 (90). Pigmentation of peritoneum
a. absent on lateral and ventro-Iateral sur-
faces or present on lateral surfaces only
(FIgs. 17, 18, 44) ................. 92
b. at least sparse or patchy on lateral and
ventro-lateral surfaces (Fig. 45)
. . . . . . . . . . . . . . . . . . . C. discobolus

92 (91). Principal dorsal fin rays
a. present (at least one) but full comple-
ment incomplete or unclearly formed

. . . . . . . . . . . . . . . . . . . . . . C. ardens
b. present with full (adult) complement
clearly formed and countable (principal
fm rays are sufficiently formed when the
last principal ray, which consists of two
separate ray elements or "branches"
based on the most posterior pterygio-
phore, is well defined) ............ 171

93 (SO). Gut (Fig. 5)
a. essentially straight or with bend less than
90" (gut phase 1) ................. 94

b. with at least 90" bend or partial s-shaped
loop (gut phase 2) ................ 97
c. with full loop (s-shape to near anterior
end of visceral cavity) but with neither
limb of loop completely across ventral
midline (gut phase 3) or with at least
one limb of loop fully across ventral
midline but not yet with both limbs
across fully to opposite side (gut phase
4) . . . . . . . . . . . . . . . . . . C. discobolus

94 (93). Pigmentation of peritoneum
a. absent on lateral and ventro-Iateral sur-
faces (Figs. 17, 59, 87) ............. 95
b. at least sparse or patchy on lateral sur-
faces only (Fig. 18) ............... 98

95 (94). Principal dorsal fm rays
a. present (at least one) but full comple-
ment incomplete or unclearly formed . 143
b. present with full (adult) complement
clearly formed and countable (principal
fm rays are sufficiently formed when the
last principal ray, which consists of two
separate ray elements or "branches"
based on the most posterior pterygio-
phore, is well defmed) ............ 183

96 (SO). Gut (Fig. 5)
a. essentially straight or with bend less
than 9()0 (gut phase 1) ............. 98
b. with at least 9()0 bend or partial s-shaped
loop (gut phase 2) ................ 97
c. with full loop (s-shape to near anterior
end of visceral cavity) but with neither
limb of loop completely across ventral
midline (gut phase 3) or with at least
one limb of loop fully across ventral
midline but not yet with both limbs
across fully to opposite side (gut phase
4) . . . . . . . . . . . . . . . . . . C. discobolus

97 (93,96). Dorsal surface lateral to .midline
from shortly behind head to about
2/3 distance to last myomeres with
a. distinct continuous or nearly continuous
lines of melanophores along (parallel to)
each side of dorsal midline (Fig. 17) .. . 98
b. distinctly shorter or discontinuous lines
of melanophores along one or both sides
of dorsal midline or with no distinct
lines of melanophores along either side
of dorsal midline (Figs. 45, 87) ....... 99

98 (94,96,97). Principal dorsal fin rays
a. present (at least one) but full comple-
ment incomplete or unclearly formed . 1.30
b. present with full (adult) complement
clearly formed and countable (principal
fin rays are sufficiently formed when the
last principal ray, which consists of two
separate ray elements or "branches"
based on the most posterior pterygio-
phore, is well defmed) ............ 183

99 (97). Pigmentation of peritoneum

61