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

to) each side of dorsal midline (Fag.

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) ....... 63

63 (62). Pigmentation of peritoneum
a. absent on lateral and ventra-lateral sur-
faces or present on lateral surfaces only
(Figs. 17, 18, 44) ................. 64
b. at least sparse or patchy on lateral and
ventra-lateral surfaces (Fig. 45)
. . . . . . . . . . . . . . . . . . . C. discobolus

64 (36,60,63). Principal dorsal fm rays
a. absent .................... c.ardens
b. present (at least one) but full comple-
ment incomplete or unclearly formed . 146
c. 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 pterygia-
phore, is well defmed) ............ 171

65 (44). Gut (Fig. 5)
a. essentially straight or with bend less than
90" (gut phase 1) ................. 66
b. with at least 900 bend or partial s-shaped
loop (gut phase 2) ................ 73
c. with full loop (s-shape to near anterior
end of visceral cavity) but with neither
limb of loop completely across over ven-
tral midline (gut phase 3) . . . C. discobolus

66 (65). 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 (Figs. 17,

59) ........................... 67
b. distinctly shorter or discontinuous lines
of melanophores along one or both sides
of dorsal midline (Fig. 87) .......... 70
c. no distinct lines of melanophores along
either side of dorsal midline (Fig. 45) .. 71

67 (66). Melanophores in lines lateral (and
parallel) to dorsal midline between
head and 2/3 distance to last my a-
meres mostly in
a. single file (FIgS. 17, 87) ............ 68
b. obliquely oriented pairs or groups result-
ing in a "herring bone" or "tractor tread"
pattern (Fig. 59) . . . . . . . . . . . C. latipinnis

68 (67). Pigmentation of peritoneum
a. absent on lateral and ventra-lateral sur-
faces (FIgS. 17, 59, 87) ............. 69
b. at least sparse or patchy on lateral sur-
faces (Fig. 18) ................... 76

69 (68). Principal dorsal fin rays
a. absent ..... .. .. .. . .. .. . .. .. ... 278
b. present (at least one) but full comple-
ment incomplete or unclearly formed . 143
c. 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 pterygia-
phore, is well defined) ............ 183

70 (66). Melanophores in lines lateral (and
parallel) to dorsal midline between
head and 2/3 distance to last my a-
meres mostly in
a. single file (Figs. 17,87) ............ 71
b. obliquely oriented pairs or groups
resulting in a "herring bone" or "tractor
tread" pattern (Fig. 59) . . . . . . C. latipinnis

71 (66,70). Pigmentation of peritoneum
a. absent on lateral and ventro-Iateral
surfaces (Figs. 17, 44, 59, 87) ........ 72
b. at least sparse or patchy on lateral
surfaces only (Fig. 18) ............. 79
c. at least sparse or patchy on lateral and
ventra-lateral surfaces (Fig. 45)
. . . . . . . . . . . . . . . . .. C. discobolus

72 (71). Principal dorsal fm rays
a. absent ........................ 278
b. present (at least one) but full comple-
ment incomplete or uncIearly formed . 136
c. 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 pterygia-
phore, is well defmed) ............ 169

73 (65). 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) . . . 76
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) . . . . . . . 74

74 (73). Pigmentation of peritoneum
a. absent on lateral and ventra-lateral sur-
faces or present on lateral surfaces only
(Figs. 17, 18, 44, 87) . . . . . . . . . . . . . . . 79
b. at least sparse or patchy on lateral and
ventra-lateral surfaces (Fig. 45)
. . . . . . . . . . . . . . . . . . C. discobolus

75 (44). Dorsal surface lateral to midline from
shortly behind head to about 2/3
distance to last myomeres with

59