eigenmann: pimelodella and typhlobagrus 247 



the base, in the larger from the middle both ways. Width of occipital process 4 

 in its length. Caudal 4 in the length. Lateral band variable, continued or not 

 continued to snout and on the tail. 



In 6987 the teeth of the pectoral spines, 7 in the smallest, 12 in the two larger, 

 are distinctly smaller than in 6982, but they are otherwise very similar, and the teeth 

 are much larger than in the specimens from the Itapicuru = itapicuruensis. 



20. Pimelodella vittata (Kroyer). 



Pseudorhamdia vittata (Kroyer) LtJTKEN, Velhas-Flodens Fiske; Dan. Vidensk. 



Selsk. Skr., 1874, p. 34 (Rio das Velhas); 1. c, 1875, p. 173, with fig. 

 Pimelodella vittata Eigenmann & Eigenmann, Proc. Cal. Acad. Sci. (2), I, 1888, 



p. 133; Occasional Papers Cal. Acad. Sci., I, 1890, p. 159 (Rio Sao Francisco; 



Minas Geraes, Sao Matheo; Rio Jequitinhonha) ; Proc. U. S. Nat. Mus., XIV, 



1891, p. 29; Eigenmann, Reports Princeton Univ. Exped. Patagonia, III, 



1910, p. 389. 

 Rhamdia vittata Ribeiro, Fauna Bras., Peixes, IV, 1912, p. 272 (Rio das Velhas; 



Jaguara) . 



Habitat. — Eastern Brazil from the Rio Sao Francisco to Sao Matheo. 



Mr. Haseman secured no specimens recognized as belonging to this species. 



4258 I. U. M., 69 mm., Rio Sao Francisco, Thayer Expedition. 



21. Pimelodella itapicuruensis sp. nov. (Plate XXXI, fig. 3). 



6974a C. M., type, 80 mm.; 69746-??z, paratypes, 72-104 mm., Queimadas, Rio 



Itapicuru, March 2, 1908. Haseman. 

 6938a C. M., 76 mm., Rio de Jacobina into Rio Itapicuru, Nov. 9, 1907. Haseman. 

 6940a-e C. M., 61-74 mm., Bom Fin, Rio Itapicuru, 6 miles north of Fazenda 



Amaratu, Nov. 2, 1908. Haseman. 

 6975a-6 C. M., Agua Branca, into Itapicuru, Nov. 6, 1907. Haseman. 



Habitat. — Rio Itapicuru, Eastern Brazil. 



Head 4.3-4.5; depth 6.5-7.5; D. 1.6; A. 12; eye 3.26-3.5; width of head 1.5 

 in its length, depth of head at base of occipital process 1.66 in its length; adipose 

 2.8-3.33; usually a little over 3 in the length; maxillary barbel extending to caudal 

 in one, to end of adipose in one, to tip of pectorals in another, usually to some 

 point above the base of the anal. Dorsal spine nearer the snout than anal; distance 

 between tip of snout and dorsal fulcrum 3.33-3.16 in the length. Dorsal spine 

 slender, not equal to snout and eye; about 8 hooks in front, sHghtly roughened 

 behind; pectoral spine about equal to snout and eye, with 8-12 short teeth along 



