55. CONORHYNCHUS. 135 



slightly united in front. The length of the base of the dorsal fin is 

 scarcely more than one-half of its distance from the occiput, and 

 one-third of that from the adipose fin ; it is as high as the body, 

 and its first ray is scarcely spinous. A.dipose fin low, not longer 

 than the dorsal, opposite to the anal ; caudal emarginate, with the 

 lobes pointed. Pectorals and ventrals horizontal, with the outer ray 

 dilated and transversely striated, not spinous. The ventrals are not 

 much shorter than the pectorals, and inserted behind the dorsal. 

 The vent is midway between opercle and root of the caudal. Upper 

 parts blackish. 

 West Africa. 



a-d. From 2-2 1 inches long. Sierra Leone. Presented by Dr. A. 

 Giinther. 



54. PIRINAMPUS. 



Pinirampus, Sleek. Nederl. Tyaschr. Dierk. 1803, p. 100. 



Adipose fin long; dorsal short, with a pungent spine and with six 

 rays ; anal fin short. Barbels six, long and band-like. Teeth villi- 

 form in the jaws ; palate edentulous. Ventral fin with six rays ; 

 caudal forked. 



Brazil. 



1 Pirinampus typus. 



Pimelodus pirinampus, At/ass. in Sjiix, Pise. Bras. p. 20. tab. 8 ; Kner, 



Sitzgsber. Acad. Wiss. Wien, xxvii. p. 416. 

 Pinirampus typus, Bleek. I. c. 



D. 1/6. A. 12. P. 1/15. 



Head granulated between the eyes, its hinder part and the neck 

 being covered with skin ; the occipital process extends on to a rather 

 large dorsal shield. Spines of the fins rather slender, that of the 

 dorsal fin prolonged into a filament. The maxillary barbels extend 

 on to the anal fin, and the outer ones of the mandible are not much 

 shorter. 



Brazil. 



A South American species, indicated by Humboldt under the name 

 of Pimelodus barbancho (Observ. Zool. ii. p. 172), appears to have 

 some similarity with the above species. 



55. CONORHYNCHUS. 



Conostome, sp., Dumeril, Ichthyol. Anal. p. 484. 

 Conorhynchus, Bleek. Nederl. Tydschr. Dierk. 1863, p. 102. 



Adipose fin very short ; dorsal short, with a pungent spine and 

 with six (seven) rays ; anal fin of moderate length. Snout produced, 

 pointed, with narrow mouth ; barbels six. Teeth in the upper jaw 

 minute, the lower and the palate edentulous. Eyes of moderate size. 

 Ventral with six rays. 



Brazil. 



