. Bulletin - United States National Museum. Science. 274 U. S. NATIONAL MUSEUM BULLETIN 202 Rongelap Atoll: 1 station, 4 specimens, 81 to 96 mm. Guam: 1 lot, 2 specimens, 75 and 76 mm. In addition, specimens examined include 1 from the Phoenix Islands and 34 from the Society Islands. Description.—Certain counts and measurements are recorded in table 23. Dorsal rays 28 to 35, usually 31 to 33; pectoral 13 to 15, usually 14 or 15; anal 3; caudal 10; dorsal fin covers first 6 or 7 tail rings, usually 614, sometimes also last trunk ring; trunk rings 15 to 17, usually 16; tail rings 36 to 40, usual
. Bulletin - United States National Museum. Science. 274 U. S. NATIONAL MUSEUM BULLETIN 202 Rongelap Atoll: 1 station, 4 specimens, 81 to 96 mm. Guam: 1 lot, 2 specimens, 75 and 76 mm. In addition, specimens examined include 1 from the Phoenix Islands and 34 from the Society Islands. Description.—Certain counts and measurements are recorded in table 23. Dorsal rays 28 to 35, usually 31 to 33; pectoral 13 to 15, usually 14 or 15; anal 3; caudal 10; dorsal fin covers first 6 or 7 tail rings, usually 614, sometimes also last trunk ring; trunk rings 15 to 17, usually 16; tail rings 36 to 40, usually 38 or 39; head to in standard length; snout to , dorsal base to , both in head; brood pouch extends over 13 to 16 tail rings, often beginning on second. Color in alcohol.—^Males v^ith brilliant cobalt blue area about anus, turning black usually after 30 to 50 years in preservative. The anal spots of Corythoichthys f. conspicillatus serve to demonstrate its close relationship to C. intestinalis. The males of both species have three spots, one that surrounds the anus and the other two posterolaterally of the anus, one on each side. In both species these posterolateral. Figure 43.—Corythoichthys flavofasciatus conspicillatus (Jenyns). (Drawing by Olivia Herald.) spots are bright yellow in life, but fade rapidly after death. In C. intestinalis the color about the anus is yellow, but in C. f. conspicillatus this perianal region is bright cobalt blue. This blue is one of the few pigments other than black or brown known to remain for any length of time in fishes preserved in alcohol. The females of G. intestinalis lack the perianal spot, but have the two posterolateral spots. It is not known whether the females of G. f. conspicillatus have the two postero- lateral yellow spots. Remarks.—In the areas where both G. -flavofasciatus and G. intesti- nalis occur, it is possible that they may be confused. However, the arrangement of the lines on the head
Size: 3106px × 805px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
