338 



MEMOIRS OF THJS CARNEGIE MUSEUM. 



Head 4.75-5 iii the length; D. 10.5 or 11.5; A. 7.5 or 8.5 counting the rudi- 

 mentary rays; P. 7; width of head very nearly equal to its length; eye in the middle 

 of the head or partly in the anterior half; interocular 3-3.33 in the length of the 

 head. Teeth conic. 



Fig. 17. Pygidium brasiliense (Reinhardt). After Liitken. 



Nasal barbels extending to a point above the end of the interopercle, maxillary 

 barbel to the gill -opening, or very little shorter or longer; pectoral a little longer 

 than snout and eye, the first ray being very little prolonged in the smallest, equal 

 to the length of the head less the opercle in the largest; origin of ventrals equidistant 

 from base of middle caudal rays and base of pectoral in the specimen from Burmier, 

 or to a point between the eyes and the opercle in the others, reaching very little be- 

 yond the vent, about two-thirds to anal, or to the anal in the specimen from Burmier; 

 origin of anal below posterior half of dorsal, the distance between the base of its 

 last ray and the base of the middle caudal rays four and two-thirds to five and a 

 quarter in the length; caudal rounded, five and a half to six and a half in the length; 

 origin of dorsal over posterior half or end of ventrals, the distance between its 

 origin and the base of the middle caudal rays one and two-thirds to one and three- 

 fourths times in the distance between its origin and the snout. 



Fig. 18. Pygidium brasiliense (Reinhardt). Opercle and P. brasiliense Irisle (Liitken). 



The color in the specimens from the Rio Docc is the same. Back and sides 

 with numerous spots and vermiculations, the spots forming an irregular dark line 

 along the middle of the sides in front. The spots and vermiculations are a little 

 finer than in Lutken's figure of brasiliensis. In the specimens from Burmier and 

 the Rio das Velhas there is a distinct median lateral band, the markings below it 

 being coarse. In the largest the lateral band becomes obscure. 



