352 Field Museum of Natural History — Zo5logy, Vol. X. 



81. Philypnus maculatus (Giinther). 



Lembus maculatus Gunther, Cat. Fish. Brit. Mus., I, 1859, 505 (Andes 



of Ecuador). 

 Philypnus lateralis Gill, Proc. Ac. Nat. Sci. Phila., i860, 123 (Cape San 



Lucas); Jordan & Evermann, Bull. U. S. Nat. Mus., XLVII, 1898, 



219s (Rio Presidio, Mazatlan). 

 Eleotris lateralis Gunther, Cat. Fish. Brit. Mus., Ill, 1861, 122 (Cape 



San Lucas). 

 Eleotris lembus Gunther, Cat. Fish. Brit. Mus., Ill, 1861, 121 (Western 



Ecuador). 

 Gobiomorus lateralis Eigenmann & Fordice, Proc. Ac. Nat. Sci. Phila., 



1885, 69. 

 Gobiomorus maculatus Eigenmann & Fordice, Proc. Ac. Nat. Sci. Phila., 



1885, 70. 

 Philypnus maculatus Regan, Biol. Cent. Amer., Pisces, 1906, 5; Meek, 



Field Mus. Nat. Hist. Pub., Zool. Ser., X, 1914, 130 (Pacific slope 



of Costa Rica). 



Head 2.75 to 3.6; depth 4.25 to 5; D. VI-I, 9; A. I, 10 or rarely I, 11; 

 scales 56 to 59. 



Body elongate; not much deeper than wide anteriorly, compressed 

 posteriorly; head long, somewhat depressed, its width at preopercular 

 margin 1.73 to 2.2 in its length; cheeks nearly vertical; snout long, 

 depressed, 2.86 to 3.4 in head; eye 4.35 to 7.25; interorbital 3.95 to 6; 

 mouth large, oblique; lower jaw projecting; maxillary reaching middle 

 of eye, 2.2 to 2.4 in head; teeth small, pointed, all depressable except 

 the outer ones, in bands on jaws and on vomer; gill -rakers undeveloped; 

 gill-arches with small, elevated patches of pointed teeth; lateral line 

 wanting; scales a little larger than in preceding species, ctenoid; origin 

 of spinous dorsal about an eye's diameter behind base of pectorals, the 

 spines weak and variable in length, sometimes reaching origin of soft 

 dorsal when deflexed; origin of soft dorsal an eye's diameter in advance 

 of origin of anal, the rays variable in length, the margin convex; caudal 

 fin scaly at base, its margin rounded; anal fin similar to soft dorsal; 

 ventral fins inserted slightly behind base of pectorals, rather short, 

 failing to reach vent; pectoral fins reaching to or past tips of ventrals, 

 1.4 to 1.84 in head. 



Color brownish. Young with a dark lateral band or blotches along 

 side, the blotches usually persisting. Fins with much red in life; the 

 dorsals, caudal and usually the anal with dusky spots, which are, how- 

 ever, notably smaller and less distinct than in the preceding species; 

 pectoral fins without spots or bars. 



There are 425 specimens in the present collection, ranging from 40 



