26 BULLETIN ISO, UNITED STATES NATIONAL MUSEUM 



4&. Color pattern not as in 4a but consisting of brown spots in more than three 

 rows on each side of body or mottled or reticulated or plain brownish. 

 60. Color consisting of five or six irregular rows of brown spots, more or 

 less joined to each other, and about eight or nine somewhat brolien 

 lengthwise bands on sides of head. Proportional measurements : Head 

 10.1; depth 20.3; snout to anus 1.9; all in total length. Head 5.3 in 

 distance from snout to anus. Mouth 3.5; depth 2.0; snout 7.5; length 

 midcaudal fin rays 20, all in length of head. Eye in snout 2.3 ( Fig. 3, /. ) 



Uropteryg'ius fijiensis Fowler and Bean 



Gb. No blackish lengthwise bars on sides of head, color pattern mostly plain 



brown or blackish or reticulated or marbled. 



7a. Length of midcaudal fin rays contained 7 to 9 times in head. Depth 



26 to 30 ; head 9.7 to 10.8 ; snout to anus about 2.5 ; all in total length. 



Head 4.0 to 4.6 in distance from snout to anus. Mouth 2.6 to 2.8 ; 



depth 2.3 to 3.1 ; snout 5.1 to 5.8 ; all in head. Color brownish or 



blackish somewhat mottled or reticulated oveiiaid with small white 



specks, as large as pupil on head, smaller posteriorly and fewer in 



number, becoming obscure on specimens from about 250 to 355 mm., 



but prominent on specimens from 100 to 200 mm. in total length. 



Caudal fin pale. Lower jaw reticulated. (Fig. 3, i.) 



Uropterygius xanthopterus Bleeker 

 7&. Length of middle caudal fin rays short, contained 13 or more times 

 in head ; head without definite pale spots (except the pores are often 

 pale on head) and fine white points posteriorly, but either mottled 

 reticulated or plain brown. Depth in length usually fewer than 23 

 times. 

 8a. Color plain brown, no reticulations or mottlings anywhere ; iiores 

 around head pale in contrast to plain brown color ; posterior nos- 

 tril not tubular at a length of 200 mm. or smaller. Snout to anus 

 2.2 ; head 8.5 ; depth 23 ; all in total length. Head 3.3 in distance 

 from snout to anus. Snout 6.9 ; depth 2.7 ; mouth 2.9 ; length of 

 midcaudal fin rays 35; all in length of head. Eye 1.7 in snout. 



(Fig. 3, ff.) Uropterygius concolor Riippell 



8b. Color not plain brown, either reticulated, barred, or mottled. 



9a. Gill opening very high on head, above level of nostrils ; teeth in 

 five series above and four on lower jaw ; posterior nostril not 

 tubular ; head 9 to IOV2 in total lengtli ; reddish dark spots tend- 

 ing to form vertical and lengthwise stripes. 



Uropterygius supraforatus (Regan) 



9b. Gill opening on level or below level of eye; teeth in not over 



four series on upper jaw, even on specimens 600 mm. or longer. 



10a. Undulating narrow cross bands broken into spots or light 



brownish saddles or cross bands fading into plain color 



ventrally ; head 8% to 8^4 in total length, teeth triserial or 



biserial on jaws; trunk shorter than tail; front of eye at 



middle of length of mouth. 



11a. Posterior nostril tubular; undulating light-brownish cross 



bands narrower than paler interspaces. 



Uropterygius fasciolatus (Regan) 



lib. Posterior nostril not tubular; liglit-brownish cross bands or 



saddles are most distinct on dorsal half of body and 



usually almost as wide as paler interspaces; they number 



about 40 to 43 ; first tross band borders posterior margin of 



