eigenmann: pimelodella and typhlobagrus 245 



or a little farther. Adipose fin 3-3.25 in the length; upper caudal lobe distinctly 

 the longer, 3 in the length; dorsal spine equals snout and half the eye; pectoral spine 

 equals snout and eye, with numerous recurved notches in front, very few feeble 

 teeth or smooth along posterior face. A narrow, well-defined, lateral streak from 

 eye to caudal; base of dorsal hyaline, then black, shading to the tip of the rays. 



This species is closely allied to P. buckleyi, in which the dorsal and pectoral 

 spines are of equal length, and to P. notomdas with a much longer barbel. 



18. Pimelodella boliviana sp. nov. (Plate XXXI, fig. 2). 

 G964a C. M., type, 90 mm. over all, Santa Cruz de la Sierra, Bolivia. Steinbach. 

 6965a C. M., 67 mm. to base of caudal, Prov. del Sara, Jan.-Oct., 1911. Stein- 

 bach. 



Habitat. — Central Bohvia; Madeira Basin. 



Head 4.5-4.6; depth 6.3-6.5; D. 1.6; A. 13; eye 3.75 in the head; interorbital 

 4.3-4.7; eye in middle of the head; adipose fin 3 in the length; maxillary barbel 

 extending to or beyond the base of the caudal; outer mental to or near to tip of 

 pectoral; pectoral spine a httle longer than snout and eye; dorsal spine less than 

 snout and eye. Pectoral spine with 10 retrorse hooks along the distal half of the 

 anterior margin, about 7 scarcely perceptible thorns on the posterior margin; 

 caudal 3.5 in the length; a narrow band from snout to end of middle of caudal 

 rays, heaviest just behind gill-openings. Dorsal dusky except along base. 



19. Pimelodella lateristriga (MuUer & Troschel). 



Pimelodus lateristrigus MtJLLER & Troschel, Horse IchthyoL, HI, 1849, p. 3 



(Brazil). 

 Pimelodus lateristriga GtJNTHER, Cat. Fish. Brit. Mus., V, 1864, p. 118 (Brazil); 



? Hensel, Wiegm. Arch., 1870, I, p. 69 (Porto Alegre); Stbindachner, Sb. 



Ak. Wiss. Wien, LXXIV, 1876, Siisswasserfische Sudostl. Bras., HI, p. 45 



(Rio Parahyba; Rio Doce; Rio Jequintinhonha; Cannavierias ; Muriahe and 



Rio Janeiro); Vaillant, Bull. Soc. Philom. (7), IV, 1880, p. 52 (Calderou). 

 Pseudorhamdia lateristriga Lijtken, Velhas-Flodens Fiske, Dan. Vidensk. Selsk. 



Skr., 1875, p. 171, fig. (Rio das Velhas). 

 Pimelodella lateristriga Eigenmann & Eigenmann (part), Proc. Cal. Acad. (2), I, 



1888, p. 133 (Santa Clara; Rio Mucuri; Rio Doce; Cannavierias; San Matheos; 



Mendez; Rio Trombetas); Occasional Papers Cal. Acad. Sci., I, 1890, p. 156; 



Proc. U. S. Nat. Mus., XIV, 1891, p. 29; Eigenmann, Reports Princeton 



Univ. Exped. Patagonia, III, 1910, p. 389. 



