Haskman: New Fishf.s from tiik Rio IguassC. 888 



excepting the white ventral surface, is peppered with hmwii. In 

 other details it agrees with G. albescens, of which it is prohal)!)- the 

 young, locall\- known as "hureva." 



I take jileasure in naming this species after Seuhor Alipio de Miranda 

 Ribeiro, Secretary of the National Museum in Rio de Janeiro. 



Genus Imparfinis Eigcnmann & Norris. 

 ( Rliamdio^lanns von Ihering.) 

 7. Imparfinis hollandi, sp. nov. (Plate XLVIII, fig. 2.) 



Type unique, No. 2864, Porto Uniao da Victoria, Rio Tgiiassi'i, 

 December 27, 1909. Known as "guasco." 



D. 8; A. 10; \\ 6; P. I. 8; length to base of caudal 23 cm.; greatest 

 depth 1.9 cm.; length of head 5.2 cm.; length of snout 1.9 cm.; inter- 

 orbital width .9 cm.; length of maxillary barbels 2.3 cm.; origin of 

 dorsal opposite or above that of ventrals, and 8.8 cm. from tip of 

 the snout; opercular breadth of head 3.3 cm., which is as wide as any 

 part of the body; origin of anal behind that of adipose and 7.8 cm. 

 from base of caudal; anus 10.5 cm. from tip of snout; diameter of eye 

 .8 cm., equal to the distance to the posterior nares; length of pectoral 

 spine 1.4 cm.; pectorals and ventrals rounded; head as well as anterior 

 part of body greatly depressed, while in region of origin of adipose the 

 l)ody is rather round and posteriorly it is compressed; dorsal and anal 

 rays rather long; pectoral spines blunt, untoothed and weak; adipose 

 about 7.5 cm. long, low and continuous with the caudal; caudal 

 peduncle 1.4 cm. deep; orbit without free margins; upper rays and 

 edge of caudal 5.1 cm. long, while lower edge is 3.4 cm. ; teeth in bands 

 broadest in middle and narrowing toward the sides; lips rather rough 

 and thick; lower lip greatly reflexed; barbels terete and very short, 

 occipital process not quite reaching dorsal plate; fontanel long and 

 slender, reaching to back of the eyes; darker above and lighter below; 

 fins all more or less dusky without markings, the dorsal and anal 

 darkest; in life there are three fairly distinct bands, one back of head 

 another in dorsal region, and the third at the origin of the adipose. 



This species is easily distinguished by the shape of its body, and 

 b>- the lips, short barbels, peculiar caudal, etc. 



It is said to be abundant and easily taken during the dry season 

 (May to October), and to reach eighteen inches in length. 



