EIGENMANN: the PYGIDIIOiE, A FAMILY OF SOUTH AMERICAN CATPISHES. 339 



61. Pygidium itatiayae (Ribeiro). 

 Trichomyderus brasiliensis itatiayce Ribeiro, Archives Mus. Nac. de Rio de Janeiro, 



XIII, 1906, p. 8, pi. I; Fauna Bras., IV (A), 1912, p. 223. 



Habitat. — Itatiaya, Serra da Mantiqueira. 



Caudal subtruncate; head longer than broad; last ray of the dorsal over the 

 fourth of the anal; a dark lateral band. 



Fig. 19. Pijyidium italiayw (Ribeiro), adult and young. After Ribeiro. 



62. Pygidium triguttatum spec. nov. (Plate LII, fig. 4.) 

 7600, C. M., a the type 36 mm., b to e, paratypes 26-34 mm. Jacarehy. July 



14 and 15, 1908. J. D. Haseman. 



Readily distinguished by the few spines in the interopercle. 



Head 5-5.5; D. 8 or 9; A. 6 or 7.5; P. 6; eye in anterior half of the head, 2 in 

 the snout, 6 in the head, about 1.5 in the interorbital ; teeth pointed, in very narrow 

 bands; gill-openings reaching forward to below the eye; nasal barbels reaching to 

 tip of opercular spines, or but little beyond the eye; maxillary barbels to the base 

 of the opercular spine or to the axil; pectorals lanceolate, the first ray much pro- 

 longed, one and a third times as long as the head in the type, longer than the head 

 in all but one of the paratypes; origin of ventrals equidistant from snout and middle 

 of caudal; tips of ventrals reaching anus in two of the specimens, falling consider- 

 ably short of the anus in the rest; origin of anal behind the dorsal; distance between 

 last anal ray and caudal 5-5.5 in the length; caudal rounded, but few inconspicuous 



