EIGENMANN: the PYGIDIID^, a family of south AMERICAN CATFISHES. 331 



7595, C. M., paratype, GO mm. Cubatao, seven miles west of Santos, Sao Paulo, 

 Brazil. Aug. 1, 1908. Haseman. 

 In all but the teeth and color very similar to P. davisi. 



Head 5; depth 6-6.5; D. 10; A. 7 or 8; P. 7 or 8; eye three times in the snout, 

 seven to seven and one-half times in the head, two times in the interocular, exactly 

 in the middle of the head or a Uttle in front of it; posterior nares more than an or- 

 bital diameter from the eye; three rows of narrow incisors in each jaw. The teeth 

 of the paratypcs nearly conical. 



Maxillary barbel reaching to near tip of last interopercular spine or to tip of 

 opercular spines, the nasal barbel but little shorter; head pointed, but little longer 

 than broad; gill-openings extending forward to below the anterior interopercular 

 spines. First pectoral ray but slightly, if at all, prolonged, its length with the 

 filament equal to the head without the opercular spines; origin of ventrals about 

 equidistant from the snout and the middle of the caudal; origin of anal under 

 penultimate, or fourth from last, dorsal ray; distance between bases of last anal ray 

 and middle caudal rays four and one-half to five in the length; caudal truncate; 

 origin of dorsal over last third of the ventrals, its distance from the base of the mid- 

 dle caudal rays 1.5-1.75 in its distance from the snout. 



Color-markings coarse and conspicuous. In No. 7595 C. M., five obscure 

 bars across the back in front of the dorsal, slightly emphasized at their lower ends 

 on the middle of the sides; three similar bars behind the dorsal; a dark line from 

 anterior to posterior nares. In the specimens from Agua Quente a dark lateral 

 band broken toward the caudal in the smallest. Back and lower part of the sides 

 with conspicuous spots. 



52. Pygidium proops (Ribeiro). (Plate LI, fig. 2.) 

 Tricomyderus proops Ribeiro, Kosmos, V, 1908, fig. 4; Fauna Brasiliense, Peixes, 

 IVU), 1912, p. 221, pi. XL, fig. 1. 



Habitat. —Riheira de Iguape, southern Sao Paulo, Brazil, and Rio Parahyba. 

 Known from the types, and from 

 7593, C. M., one, 60 mm. Agua Quente, Ribeira Basin. Nov 27, 1908. Hase- 

 man. 

 7598, C. M., one 32 mm. Sao Joao da Barra, Rio Parahyba. June 22, 1908. 



Haseman. 



Head 5.5-6; depth 7; D. 9; A. 7-9; P. 7; posterior margin of eye shghtly in 

 advance of the middle of the head, diameter of eye two times in the snout, six and 

 one-half in the head, over one and one-half in the interorbital ; posterior nares close 

 to the eye, their posterior margin on a line with the anterior margin of the eye; 



