EIGENMANN: THE PYGIDIID^E, A FAMILY OF SOUTH AMERICAN CATFISHES. 341 



65. Pygidium santae-ritae sp. nov. (Plate LII, fig. ">. I 

 7599, C. M., type, 24 mm. Santa Rita, Rio Preto. July 10, 1908. Haseman. 



Head 4; D.ll; A. about 9; P. 8; eye very nearly in the middle of the head; 

 about two in the snout, five in the head, a little less than interorbital; teeth pointed, 

 in a single series or in a very narrow band; gill-openings extending to below the 

 middle of the eye; nasal barbel extending but little beyond posterior nares; maxil- 

 lary barbels to middle of interopercle ; outer pectoral ray not prolonged, a little less 

 than head; origin of ventrals equidistant from snout and middle of caudal; anal 

 entirely behind the dorsal, distance between its last ray and the caudal 4.5 in the 

 length; caudal rounded, 5 in the length; distance between origin of dorsal and caudal 

 equal to distance between dorsal and the middle of the eye. 



Sides with large spots. 



In the length of the barbels and the color this species agrees very closely with 

 P. minutum from southern Rio Grande do Sul, with which it may be synonymous. 

 It differs in its longer head, the forward extent of the gill-opening, the more anterior 

 position of the dorsal. While the number of fin-rays as given differs, not much 

 weight attaches to this. I have endeavored to count all of the rudiments. 



Genus V. Eremophilus 30 Humboldt. (Plate XXXVI; Plate XL, figs. A, B.) ' 



Eremophilus sive Thrichomyctcrus Humboldt, Rec. d'Obs. Zool. et Anat., I, 

 1805, p. 17, pi. 6, reprinted in 1912, title-page 1911. 

 Trachypoma Giebel, Zeitschr. Gesellsch. Naturw., Ill, 1871, p. 97 (type marmora- 



tum = mutisii). 



Type. — Eremophilus mutisii Humboldt. 



Like Pygidium, but without ventrals. 



1. Eremophilus mutisii Humboldt, (PI. XLI, figs. 1, 2; PI. LIV, figs. 1, 2.) 

 Eremophilus mutisii Humboldt, I. c, I, 1805, p. 17, pi. 6; Valenciennes, in Hum- 

 boldt, II, 1835, p. 340; Cuvier & Valenciennes, Hist. Nat. Poiss., XV, 1846, 

 p. 500, pi. 553 (Bogota); Gunther, Cat. Fishes Brit. Mus., V, 1864, p. 275; 

 Eigenmann & Eigenmann, Proc. Cal. Acad. Sci. (2), II, 1889, p. 53; Occa- 

 sional Papers Cal. Acad. Sci., I, 1890, p. 339; Proc. U. S. Nat, Mus., XIV, 



30 ipr n io<t>i.\ris. o = loving solitude (of the mountain lakes and streams). 



"Je l'ai nomme eremophile, a cause tic la solitude dans laquelle il vit a do si grandes hauteurs, et 

 dans des eaux qui ne sont presque habitees par aucun autre etre vivant. Les uaturalists qui eraignent que 

 de nouvelles especes de ce merne genre ne viennent a etre decouvertes dans des situations tres-differentes, 

 pourroient changer le nom d' eremophile en celui de thrichomycterus, tire des barhillons attaches au nez de 

 ce poisson." 



