226 Field Columbian Museum — Zoology, Vol. V. 



Subfamily Eleotridinee. 



84. Philypnus Cuvier & Valenciennes. 



Metapil. 



Philypnus Cuvier & Valenciennes, Hist. Nat. Poiss., xn, 255, 1837. 

 Type, Gobiomorus dormitor Lacepede. 



Body elongate, terete anteriorly, compressed posteriorly; head 

 elongate, much depressed above; mouth large, lower jaw much pro- 

 jecting; teeth in jaws small, slender, recurved, the outer scarcely 

 enlarged; teeth on vomer villiform, in a broad, crescent-shaped patch; 

 gill openings extending forward to below posterior angle of mouth ; 

 the isthmus very narrow; scales ctenoid, covering most of the head; 

 no preopercular spine; ventral fins separate, the rays 1,5. 



214. Philypnus dormitor (Lacepede). Metapil. 



Gobiomorus dormitor Lacepede, Hist. Nat. Poiss., 11, 599, 1798; 



Martinique. 

 Elcotris dormitatrix Gunther, Cat., 111, 119, 1861; Mexico. 

 Philypnus dormitor Girard, Mex. Bd. Sur., 29, pi. xn, fig. 13, 1859; 

 mouth of the Rio Grande: Gill, Proc. Acad. Nat. Sci. Phila., 

 i860, 122; mouth of the Rio Grande: Jordan & Evermann, 

 Bull. 47, U. S. Nat. Mus., 1898, 2194: Jordan & Snyder, Bull. 

 U. S. Fish Comm., 1900, 147; lagoons near Tampico : Meek, 

 Field Col. Mus. Pub., 65, 1902, 120; La Antigua. 

 Philypnus lateralis Gill, Proc. Acad. Nat. Sci. Phila., i860, 123; 

 Cape San Lucas: Jordan, Proc. Cal. Acad. Sci., 1895, 493 > Ri° 

 Presidio and Astillero : Rutter, Proc. Cal. Acad. Sci., 1896, 264; 

 fresh water at San Jose del Cabo, Lower California; Jordan & 

 Evermann, Bull. 47, U. S. Nat. Mus., 1898, 2195; Rio Presidio, 

 near Mazatlan, Mexico. 

 Gobiomorus dormitator B. A. Bean, Proc. U. S. Nat. Mus., 1898, 



542; Dominica and Santa Maria, Vera Cruz. 

 Fresh water streams of tropical America, from Tamaulipas and 

 Sonorato Panama, not found on the Mexican plateau. (Santa Engracia ; 

 Forlon; Valles; Rascon; San Francisco; Boca del Rio; Motzorongo; 

 Obispo; Perez; Tehuantepec; La Vega, Tamaulipas [Evermann]). 



Head 2-| to 3; depth 5 to 5^; D. vi-10; A. 1,9; scales 50 to 60. 

 Bodv elongate, compressed posteriorly; head long, much depressed; 

 mouth large, lower jaw projecting; interorbital area nearly flat, its 

 width 4 in head; maxillary 2-g- to 2^ in head, its tip reaching vertical 

 from pupil; teeth on jaws in a band, depressible; diameter of eye 6 to 

 7 in head; distance from tip of snout to origin of dorsal 2 l / 2 in body; 

 pectoral 1 % in head ; ventral 2% in head ; scales on entire body except 



