EIGENMANN: the PYGIDIIDiE, A FAMILY OF SOUTH AMERICAN CATFISHES. 303 



XIV, 1891, p. 36; Eigenmann, Reports Princeton Univ. Exped. Patagonia, 

 III, 1910, p. 399; Fowler, Proc. Acad. Nat. Sci. Phila., 1915, p. 229 (note on 

 tyiJe). 



Habitat. — Arequipa. 



This species named by Cope without any sort of description is said by Fowler 

 to be "close to rivulatum, differing in its large dark blotches." 



19. Pygidium barbouri Eigenmann. 

 Pygidium barhouri Eigenmann, Reports Princeton Univ. Exped. Patagonia, III, 



1910, p. 400; Ann. Carnegie Mus., VII, 1911, p. 214, pi. XXXII. 



Habitat. — Beni River, eastern Bolivia. 

 12566 I. U. M., 37 mm. and 2465a-6, C. M., two, cotypes. Rio Beni, tropical 



eastern Bolivia. Obtained by Mr. Thomas Barbour at La Paz, Bolivia, from 



the Beni River. 



This species has conical teeth. 



Fig. 9. Pygidium barbouri Eigenmann. After Eigenmann, Annals Carnegie Museum, VII, 

 pL XXXII. 



Head 4.66; depth 7; D. 8; A. 6; eye 3 in snout, 7 in head, 2.5 in space between 

 the eyes. Width of head equals its length behind the posterior nares, the body 

 tapering to the caudal; nasal barbels reaching to posterior margin of the eye, the 

 longer maxillary barbel scarcely to the gill-opening when laid straight back. Teeth 

 minute, in bands. First pectoral ray prolonged, not as long as the head; dorsal 

 subtruncate, none of its rays prolonged; distance of origin of dorsal from caudal 2.6 

 in the length; origin of anal from base of middle caudal rays 3.75 in the length; 

 caudal emarginate; accessory rays not evident; ventrals not reaching the short, 

 scarcely rounded anal. A dark median band from the gill-opening to the tip of the 

 middle caudal rays, a light stripe above it; the back chocolate. 



20. Pygidium fassli Steindachner. 

 Pxjgidium fassli Steindachner, Anz. K. Akad. Wiss. Wien, 1915, No. XVII, p. 200 

 (Rio Songo, Province North Yungas, Bolivia). 



