360 MEMOIRS OF THE CARNEGIE MUSEUM. 



series of teeth on the premaxillary. In Branchioica a "claw-tooth" is present at 

 the end of the maxillary. 



The rami of the lower mandibles of the Vandelliince seen from below are elon- 

 gate triangles, converging forward, but not joined, in fact, not meeting in the center. 

 Teeth may or may not be present in the lower jaw. When present, they are re- 

 curved, pointed, in two series at the end of the jaws, in apposition to the maxillary 

 teeth. 



The alimentary canal is a simple, straight tul)c, of nearly uniform diameter, 

 evidently greatly distensible. 



Key to the Species of Vandelli/.. 

 a. Mandible without teeth, thorn-like teeth at end of maxillary of V. plnzai and hasemani. (Neither 

 mandible nor maxillary examined in V. cirrhosa and uncneri.) 

 b. Caudal truncate or slightly emaria;inate. 



c. D. 8-9; A. 9-10; P. 6; depth 9; premaxillaries with five to eight teeth; maxillary barbel two 



in the head; caudal slightly cmarginate, the lobes rounded, equal; pectorals longer than 



the head 1. cirrhosa Cuvier & Valenciennes. 



cc. D. 9; A. 8; P. 7; depth 12; premaxillaries with five to nine teeth; maxillary barbels less than 

 half the length of the head; caudal cmarginate, the lobes rounded; pectorals as long as the 



head 2. plazai Castelnau. 



bb. Caudal forked; D. 11; A. 10; P. 6; depth 7-S. 



d. Premaxillaries with nine teeth; mouth wide, angle of gape nearly opposite the maxillary 



barbel; maxillary barbels about 3 in the head; distance between the origin of the dorsal 

 and origin of the caudal 2.75 in the distance of the dorsal from the snout; pectorals shorter 



than the head 3. wieneri Pellegrin. 



dd. Premaxillaries with about six teeth; mouth small, the angle of the gape far in advance of the 

 base of the barbel; maxillary barbel 2-2.5 in the head; distance between origin of dorsal 

 and base of middle caudal rays two and a quarter to two and one-half in its distance 

 from the snout; pectoral about equal to the length of the head. 



4. hasemani Eigenmann, 



aa. A patch of minute teeth on each mandible; one or two claw-like teeth on the end of the maxillary, just 



in front of the barbels; caudal truncate; D. 11; A. 8; P. 6; premaxillaries with five teeth; maxillary 



barbel two in the head; distance between origin of the dorsal and the origin of the caudal 2.8 in the 



distance of dorsal from the snout; pectorals little shorter than the head . 5. sanguinea I'^igenmann. 



1. Vandellia cirrhosa Cuvier & Valenciennes. 



Vandellia cirrhosa Cuvier & Valenciennes, Hist. Nat. Poiss., XVIII, 1846, 

 p. 386, pi. 547; Castelnau, Anim. Amer. du Sud, 1855, p. 51, pi. 28, fig. 2 

 (Brazil); Gijnther, Cat. Fishes Brit. Mus., V, 1864, p. 277; Eigenmann & 

 EiGENMANN, Proc. Cal. Acad. Sci. (2), II, 1889, p. 55 (Hyavary); Occasional 

 Papers Cal. Acad. Sci., I, 1890, p. 345; Proc. U. S. Nat. Mus., XIV, 1891, 

 p. 37; BouLENGER, Proc. Zool. Soc. Lond., 1897, pp. 901 and 920, Trans. Zool. 



