Eigenmann: South American Silurid^e. 401 



^ , , , 17 i8 19 20 21 22 number of anal rays. 



In these the anal counts are — , — , — , — , — , — , . 



338321 number 01 specimens. 



72580, C. M., 68 mm., Sapucay, April 2, 1909. Haseman. 



7243a, C. M., Ill mm., Porto Alegre, Jan. 19, 1908. Haseman. 



Steindachner refers the specimens described by the Eigenmanns 

 (Occasional Papers, Cal. Acad. Sci., I, 143) from Maldonado to a 

 distinct species eigenmanni (Sb. Acad. Wiss. Wien, CXVI, 1907, p. 

 487), and redescribed what he took to be musteliniis from Cubatao. 

 These differ however in color from the typical mustelinus agreeing in 

 this respect with: 



57120-/, C. I\I., 31-75 mm., Cubatao, 7 miles west of Santos, Aug. i, 

 1908. Haseman. 



These specimens are smaller than Steindachner's. They have the 



maxillary barbel reaching to or beyond the middle of the pectoral. 



20 21 23 24 

 The anal is — , — , — , — . Steindachner found the maxillary barbels 

 2 I 2 I 



reaching to the end of the head in the young, only being shorter; 



1.4 in the head, in the older. Our specimens agree with those of 



Steindachner in having a dark lateral band. He found but 16-18 



anal rays. 



It is quite possible that the specimens, recorded by Steindachner 



and above under 5712, represent a distinct unnamed species and that 



the specimens described from Maldonado represent another species, 



eigermanni distinct from mustelinus, but for the present I consider 



it best to refer all of these to the single species. 



Genus Doras Lacepede. 



8. Doras lentiginosus sp. nov. (Plate XL.) 



7048a, C. M., type, 357 mm., Santarem, Dec. 15, 1909. Haseman. 

 7049a, C. M., paratype, 250 mm., Manaos, Nov. 18, 1909. Haseman. 



Related to D. uranoscopus Eigenmann & Eigenmann and to D. 

 granulosus Valenciennes. 



Head 3.75; depth 5.4; D. 1.6; A. 12; scutes 21 and 22 (24 in the 

 paratype); eye 5 in the snout, 5.5 in the interocular, 13 in the head 

 (4, 4.5, II respectively in the paratype). 



Maxillary barbel extending to posterior face of dorsal spine, post- 

 mental to below origin of pectoral; gape a little greater than inter- 



