FISHES OF THE FAMILY LORICARIID®. 207 
(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, 175 mm. in total length, and a 
female of 133 mm. 
Rio Chagres, Panama. 
8. XENOCARA OCCIDENTALIS, sp. n. (Plate XIV. fig. 5.) 
Depth of body 53-53 times in the total length, length of head 23-3 times. Head 
15-15 times as long as broad and twice as long as deep. Diameter of eye 6-7 times 
in the length of head, interorbital width 23 times, length of snout about 1% times. 
Length of mandibular ramus 22-23 times in the interorbital width. Snout with 
tentacles. Interoperculum armed with 9-12 spines, the longest 4 the length of head. 
23-24 scutes in a longitudinal series, 6-7 between dorsal and adipose fin, 11-12 
between anal and caudal. D. I 7, the first ray +-3 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.I4. Pectoral spine extending 
to anterior 4 of ventral. Caudal obliquely truncate, the lowest ray equal to (adult) 
or longer than (young) the head. Caudal peduncle 23-2} times as long as deep. 
Olivaceous ; numerous small white dots on head and body; fins dusky, the dorsal witl 
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. 
Chetostomus cirrhosus (part.) Bouleng. Proc. Zool. Soc. 1891, p. 234, pl. xxvi. fig. 1, 9. 
Depth of body 5+ times in the total length, length of head nearly 3 times. Head 
12 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 25 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 2 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.1I4. Pectoral spine not quite reaching 
ventral. Caudal obliquely truncate, the lowest ray } the length of head. Caudal 
peduncle 24 times as long as deep. Uniform brownish. 
Total length 100 mm. 
One specimen: Rio Grande do Sul; collected by Dr. von Ihering. 
2M 2 
