366 ■ MEMOIRS OF THE CARNEGIE MUSEUM. 



Head 11.66; depth 12; D. 4 + 8.5; A. 3 + 7; P. 7; nearly the entire eye in the 

 anterior half of the head, a httle more than four in the length of the head to the tip 

 of the opercular spines. (The eye is too small in the drawings.) 



Maxillary barbel extending to the tip of the interopercular spines, two in the 

 head; the lower barbel minute, only about half a millimeter long as compared with 

 the 2.5 mm. of the maxillary barbel; two flat, recurved teeth on the end of the 



Fig. 37. Vandcllia sanguinea Eigcnmann. Left prcmaxillary, showing one of the concealed 

 teeth. 



prcmaxillary concealed just in front of the barbel; five prcmaxillary teeth graduated 

 from the long middle one to the minute lateral ones; mandibles widely separated 

 from each other with about five minute teeth; the teeth concealed by the Up; five 

 spines in the main row of the interopercle, the middle ones very strong, directed 

 backward, about five spines in supplementary rows; five spines in the main row of 

 the opercle, about ten in supplementary rows; distance from origin of ventrals to 

 base of middle caudal rays two times in its distance from the snout; origin of anal 

 behind the origin of the dorsal, the last dorsal ray over the middle of the anal; dis- 

 tance between anal and base of middle caudal rays five and one-half times in the 

 length; distance from origin of dorsal to base of middle caudal rays two and eight- 

 tenths times in its distance from the snout; caudal truncate, with numerous acces- 

 sory rays. Translucent, the eyes black. 



Genus XV. Paravandellia« Ribeiro. (Plate XXXVIII.) 



Paravandellia Ribeiro, Comm. Linhas Telegraphicas Estrategicas de Matto- 



Grosso ao Amazonas, Annexo No. 5, Sept., 1912, p. 29. 



Type. — Paravandellia oxyptera Ribeiro. 



No nasal or mental barbels, one (probably two) barbels at the angle of the 

 mouth; first pectoral ray not continued as a filament; gill-opening small; mouth 

 inferior, with a band of teeth in the middle of the upper jaw and a single series 

 laterally ; no teeth on the mandible ; ventrals much nearer tip of caudal than snout ; 

 opercular and interopercular spines separate from each other. Caudal forked 

 ("furcada"). Ribeiro says that this genus may be considered between Stegophilus 

 and Vandellia, having the general appearance of the former. 



^° irapa = near, Vandellia = name of a related genus. 



