258 ME. C. TATE EEGAN ON THE 



10. Xenocara Montana, sp. ii. (Plate XIV. fig. 6.) 



Depth of body G times in the total length, length of head 2\ times. Head If times 

 as long as broad and 2^ times as long as deep. Diameter of eye 10 times in the length 

 of head, length of snout If times, interorbital width 3 times. Length of mandibular 

 ramus twice in the interorbital width. Snout with tentacles. Interoperculum armed 

 with about 14 spines, the longest about 5^ times in the length of head. 24 scutes 

 in a longitudinal series, 7 between dorsal and adipose fin, 11 between anal and caudal. 

 D. I 7, the first ray f the length of head, the last, when laid back, separated by 

 2 scutes from the spine of the adipose fin ; length of base of dorsal nearly equal to its 

 distance from the adipose fin. A. I 4. Pectoral spine scarcely extending to ventral. 

 Caudal peduncle 2\ times as long as deep. Olivaceous, the fins blackish, slightly 

 mottled with lighter. 



Total length 100 mm. 



One specimen from Tumupara, Andes of Bolivia, 1500 feet, collected by Dr. J. 

 W. Evans. 



11. Xenocara bufonia. 



Hypostomus bufonius Cuv. & Val. Hist. Nat. Poiss. xv. p. 511 (1810). 

 Hypostomus calamita Cuv. & Val. t. c. p. 514. 

 Chatostomus calamita Giinth. Cat. Fish. v. p. 248 (1864). 

 Chatostomus jelskii Steind. Sitzb. Ale. Wien, lxxii. 1875, p. 603. 



Jncistrus calamita Eigenm. & Eigenm. Proc. Cal. Ac. (2) ii. 1889, p. 48; Occ. Pap. Cal. Ac. i. 

 1890, p. 449. 



Depth of body 5f-6 times in the total length, length of head about 3 times. Head 

 nearly as broad as long and twice as long as deep. Diameter of eye 7-9 times in the 

 length of head, length of snout If -2 times, interorbital width 2\-1\ times. Length 

 of mandibular ramus l^-lf times in the interorbital width. Snout with tentacles. 

 Interoperculum armed with 12-16 spines, the longest about 4 times in the length 

 of head. 25-26 scutes in a longitudinal series, 7 between dorsal and adipose fin, 

 12-13 between anal and caudal. D. I 7, the first ray about | the length of head, the 

 last, when laid back, separated by 2-3 scutes from the spine of the adipose fin ; length 

 of base of dorsal nearly equal to its distance from the adipose fin. A. I 4. Pectoral 

 spine nearly or quite extending to base of ventral. Caudal obliquely truncate, the 

 lowest ray about as long as the head. Caudal peduncle 2^--2f times as long as deep. 

 Olivaceous ; fins with dark spots or cross-bars. 



Total length 155 mm. 



Sixteen specimens (including the types of the species and of //. calamita) : Andes of 

 Peru and Bolivia. 



