EIGENMANN— SIXTEEN NEW PYGIDIID.E. 



697 



Head 6; D. 10.5 ; A. 8.5 ; P. 8; eye in middle of the head, inter- 

 orbital 4 in the length of the head. 



Nasal barbel as long as the head, reaching beyond axil of 

 pectoral; maxillary barbel reaching to near the end of the lower 

 pectoral ray, considerably longer than the head ; outer pectoral ray 

 as long as the head ; origin of ventrals equidistant from base of 

 middle caudal ray and tip of opercle, not quite reaching to the vent ; 

 origin of anal under posterior half of dorsal, the distance from the 

 base of the last ray to the middle caudal ray contained five and one 

 half times in the length ; caudal six times in the length ; origin of 

 dorsal equidistant from tip of caudal and opercular spines, over pos- 

 terior third of the ventrals, its distance from the middle caudal ray 

 one and four fifths in its distance from the snout. 



A dark streak from opercular spines to middle of caudal ; faint 

 spots above and below the lateral stripe. 



10. Pygidium iheringi spec. nov. 



Trichomycterus punctulatns {non C. & V.) Ribeiro, Arkiv. for 



Zoologi, IV., No. 19, 1908 (Iporanga). 

 Trichomycterus dispar (non Tschudy) Ribeiro, Kosmos, V., 1908, 



and Fauna Brasiliense, IV. (A), 1912, p. 222 (Rio Iporanga, 



Sao Paulo). 



Habitat, Sao Paulo in coastal streams and Parana Basin. 



Allied to P. punctatissimuui from Araguay. 



Head 4.5-5 in the length; D. 11.5 or 12.5 ; A. 7.5 or 8.5 counting 

 the two rudimentary rays in each case ; P. 8 ; width of head equal 

 to its length behing the nasal barbel ; eye in middle of the head, 

 interorbital 3.5-4 in the length of the head. Teeth incisors with 

 expanded tips, in bands of four or five series. 



