FISHES OF THE FAMILY LOEICAEIIHZE. 257 



(smaller specimen) the length of head. Caudal peduncle 2\ times as long as deep. 

 Olivaceous ; a dark spot at the base of the first interradial membrane of the dorsal. 



Two specimens (types of the species): a male, 17-j mm. in total length, and a 

 female of 133 mm. 



Rio Chagres, Panama. 



S. Xenocara occidentalis, sp. n. (Plate XIV. fig. 5.) 



Depth of body 5|— 5-f times in the total length, length of head 2f-3 times. Head 

 1^- 1-L times as long as broad and twice as long as deep. Diameter of eye 6-7 times 

 in the length of head, interorbital width 2^ times, length of snout about If times. 

 Length of mandibular ramus 2-f— 2-f times in the interorbital width. Snout with 

 tentacles. Interoperculum armed with 9-12 spines, the longest ■§• the length of head. 

 23-21 scutes in a longitudinal series, 6-7 between dorsal and adipose fin, 11-12 

 between anal and caudal. D. I 7, the first ray f— J the length of head, the last, when 

 laid back, reaching the spine of the adipose fin ; length of base of dorsal equal to its 

 distance from anterior + of spine of adipose fin. A. I 4. Pectoral spine extending 

 to anterior ^ of ventral. Caudal obliquely truncate, the lowest ray equal to (adult) 

 or longer than (young) the head. Caudal peduncle 2^— 2-f times as long as deep. 

 Olivaceous ; numerous small Avhite dots on head and body ; fins dusky, the dorsal with 

 lighter bars or rows of spots and an inconspicuous darker spot at the base of the first 

 interradial membrane. 



Total length 115 mm. 



Seven specimens from Canelos, E. Ecuador, collected by Mr. C. Buckley, had been 

 referred by Boulenger to X. cirrhosa in his account of the Buckley Collection. 



9. Xenocara brevipinnis, sp. n. 

 Chatostomus cirrhosus (part.) Bouleng. Proc. Zool. Soc. 1891, p. 23!-, pi. xxvi. fig. 1, ? . 



Depth of body b\ times in the total length, length of head nearly 3 times. Head 

 1£ times as long as broad and twice as long as deep. Diameter of eye 7^ times in 

 the length of head, length of snout twice, interorbital width 2f times. Length of 

 mandibular ramus 2\ times in the interorbital width. Snout with tentacles. Inter- 

 operculum armed with 12-14 spines, the longest 4-^ times in the length of head. 

 25 scutes in a longitudinal series, 7 between dorsal and adipose fin, 11 between anal 

 and caudal. D. I 7, the first ray § 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 equal 

 to its distance from spine of adipose fin. A. I 4. Pectoral spine not quite reaching 

 ventral. Caudal obliquely truncate, the lowest ray f the length of head. Caudal 

 peduncle 2\ times as long as deep. Uniform brownish. 



Total length 100 mm. 



One specimen : Bio Grande do Sul ; collected by Dr. von Ihering. 



2 M 2 



