212 



BULLETIN OF THE UUREAU OK FISHERIES. 



convex; the skull is thick, with three obtuse, longitudinal ridgea and two grooves separating them; 

 hark elevated; no teeth on tongue. The genus contains two known species, Apsilus brighami I Seale i, 

 and the new species Rooseveltia aloha .Ionian & Snyder. 



This new genus is named for Theodore Roosevelt, eminent as a naturalist and as a promoter of 

 the scientific work of the various scientific bureaus of the Government of the United States. 



The genera of Etelinw, distinguished by the uncrested cranium, may be thus compared: 



I. Dorsal fin continuous. 



a. Canine teeth strong; body fusiform: no teeth on tongue ( = PristopQ7Hoides=Sparop8is) , type vireecena Apkion. 



 anine teeth very weak; back more elevati a*. 

 &. Top oi cranium broad, Battish, becoming more convex with age. 



<\ Tn!iL'/lh' tnuililcss. 



d. Bodj subfnsiform, the depth -i in length i violcscens) Boweksia, 



dd. Body deeper, compressed, the depth 3 in length i mocropIUkcUmus) Platyimtjs. 



cc. Tongue with a patch of villiform teeth; body sul .fusiform i dubius) (.'h.tctopterus. 



bb. Top of cranium narrow, convex, the skull thick, with three obtuse longitudinal ridges separated by shallow grooves; 



no teeth on tongue; back elevated Roosevi i tia. 



II. Dorsal Nn divided. 



' . < Jranium not cavernous: skeleton firm: color red. 

 /. Maxillary scaly. 



g. Opercle without spine (carbunculus) Etelis. 



gg. ( ipercle with spine, (berycoidea) Eteliscus. 



jj. Maxillary naked: opercle with a. spine i aquilionaris) Etei.ii- is. 



< < . * rani u m cavernous; skelton soft; color black Verilus. 



In Apsilus and Tropidinius, as in TAitianus, the top of the cranium has three sharp ridges. No 

 species of Apsilus is known from Hawaii. 



Fig. 3.— Rooseveltia aloha Jordan & .Snyder, new species. Type. 



1 I. Rooseveltia aloha Jordan & Snyder, new species." (Fig. 3, text.) 



This species differs markedly from J!, brighami in having a much larger eye and a very narrow 

 preorbital, the width of the latter being somewhat less than half the diameter of eye. 11. alohais 

 without the transverse yellow bands characteristic of R. brighami. 



Head 2.9 in Length to base of caudal; depth 2.7; eye :;.-"> in head; snout 2.7; interorbital space 4; 

 preorbital 7.5; maxillary 2.5; dorsal k, 11; anal m, 8; scales 7-67-16. 



Body deeper, the dorsal contour more elevated, the snout shorter, than in 7.'. brighami; eye laiye, 

 high up, with a swollen cutaneous rim above; interorbital area somewhat convex; suborbital narrow- 



a Listed in Jordan & Seale, Fishes of Samoa, Bull. U. S. Bureau of Fisheries, vol, x w, L905 (Dec. 15, 1906), p. 

 in >t hit herto described. 



