THE SHORE EISHES. 3(l«) 



Teuthis triostegus (.Linne). 



Chadodon Iriostegiis Linne, Sj'st. Nat. ed. 10, IToS, ]). 274. 



Acanthurus triostegus Gunther, Cat., 1861, 3, p. 327. Day, Fi.slu's of India. 1870, p. 204, i)l. 4S, fig. 2. 



H e put us triostegus J ORDAfi & Se.\le, Bull. U. S. Bur. Fish., 1900, 25, p. 3.54. 



Xos. 05872, Ij inches long from Fakarax'a, and U5924, M. C. Z. 29480, 

 thi-ee specimens, li to 22 inches long from Makemo, each in Paumcjtu Islands. 

 Xos. 08927. 2i inches long from Jaluit, and 08910, M. C. Z. 29483, li inches long 

 from Arhno Atoll, each in ^Marshall Islands. 



Jordan and Seale say: "this seems like sandiricheiisis, but lacks one cross- 

 Ijand and is very pale; only 4 bands on sides.'" Regarding sandvicensis they say, 

 "This is the most abundant species of the genus about Hawaii, where it replaces 

 the closely allietl H. triostegus. The differences, although slight, are constant." 

 We have compared our specimens with a specimen of sandvicensis from 

 Hawah, and find the number of cross bands the same, the only difference being 

 the somewhat darker color of the Hawaiian sjiecimen and the continuation of 

 the shoulder band downward and backward below the upper base of the pec- 

 toral, which is well shown in the figure given by Jordan A' Evermann (Bull. 

 U. .^. Fish. Comm. 23. ]it. l.fig. 172). In our specimens the band does not extend 

 below the pectoral, which character is well shown in Day's figure of T. triostegus. 



Another specimen, No. 09072 (larval form) Ig inches long from Arhno Atoll, 

 Marshall Islands. 



In color this specimen differs but slightly from Teuthis elegans Garman, 

 Deep Sea Fishes, p. 70. pi. 50, fig. 2, the only differences being in the faint V- 

 shajied mark on caudal peduncle, fainter dots at the base of the anal, none at 

 base of the dorsal and a much darker end to the caudal. It differs in other re- 

 spects as follows: the spines at the ends of alternate ridges at the bases of dorsal 

 and anal are arranged in groujis of 2-4 instead of 3-6; the second dcn-sal spine 

 is equal to the distance from the posterior edge of the pupil to the tip of the snout , 

 in.stead of equal to the eye and snout : and it has no denticles on the anterior 

 edge, but merely presents a rougli and irregular surface, where T. elegans is said 

 to have about nine denticles, it is distinctly grooved on each side, with the 

 ajipearance of two close-set spines, the posterior i)ortion of which seems to be 

 finelv serrate on the sides; and the margin of the sjjinous dorsal instead of hav- 



