779 
Muraenichthys eleraa new species 
Depth 34 3/4; head 8 1/2, 3 2/5 to vent, width 4 1/5 i'ts length; 
combined head and trunk 1 I /3 in tail. Snout 6 1/3 in head; eye 20, 3 1/8 
in snout, 2 1/2 in interorbital; mouth cleft extends 4 sye diameters be¬ 
hind eye, length 2 1/2 in head; teeth uniserial, small, pointed, in jaws, 
sometimes little irregular in places; vomerine teeth similair, biserial in 
front and then uniserial; interorbital 7 1/4, broadly convex. Gill open¬ 
ing in lower half of body depth, about twice long as eye. 
Lateral line distinct, complete. 
Dorsal origin advanced before anal origin for space about equal to 
postocular length of head. Vertical fins low feeble fold around end of 
tail. 
Uniform brown, scarcely paler on under surface of head and belly. 
Iris dark gray. Fins pale. 
Diagnosis, Apparently related to Muraenichthys macrostomus Sleeker, 
though differing ig its dorsal origin at last third of trunk, its much 
longer mouth cleft and body 1 1/3 in tail. It also differs from U, 
thompsoni Jordan and Richardson and M, malabonensis Herre in much the same 
way. 
Type No. U, S. N. M, 
2363 . D. 5131 * Island off Panabutan Point, N. 20° E,, 0,40 mile, Sulu 
Sea off western Mindanao, In 27 fathoms, February 6 , 1909* Length 156 mm. 
