626 Mr. C. T. Regan on 
A. III 8-9. Pectoral spine extending to below the first 
branched ray of the dorsal, stout, with 12-16 strong teeth on 
its inner edge, the longest nearly equal in length to the 
breadth of the spine. Ventrals originating behind the vertical 
from the last dorsal ray, extending # of the distance from 
their base to the anal. Caudal forked, the upper lobe pointed, 
a little longer than the lower, which is rounded. Inner 
caudal rays half as long as the outer. Greyish; a narrow 
dark stripe along the middle of the side of the body; a dark 
streak on the membrane in front of each dorsal ray. 
Total length 140 mm. 
Three specimens from the Durango, Sapayo and Vaqueria 
Rivers, N.W. Ecuador. 
This species is distinguished from P. lateristriga, Mull. & 
Trosch., by the longer head, shorter and stouter dorsal spine, 
-and less deeply forked caudal. 
Haplochilus peruanus. 
Depth of body about 5 times in the total length, length of 
head 4 times. Snout a little shorter than eye, the diameter 
of which is 33-32 times in the length of head, interorbital 
width twice. Sc. 45/14. D. 9-10. A. 13-15. Distance 
from origin of dorsal to base of caudal about 22 times in that 
from origin of dorsal to tip of snout. Pectoral nearly 2? the 
length of head, extending 4 the distance from its base to the 
origin of anal. Ventrals not or scarcely reaching anal 
opening. Brownish, with small dark spots on the vertical 
fins. 
Total length 55 mm. 
‘Two specimens from Perim, Peru, 800 metres, collected by 
the late Mr. P. O. Simons. 
Belone fluviatilis. 
Length of head about 22 times in the total leneth. Dia- 
meter of eye 3-34 times in the length of postorbital part of 
head and equal to the interorbital width. Snout twice as 
Jong as the rest of head. Lower part of maxillary exposed 
for its whole length. D. 15-16, the anterior rays elevated, 
the posterior short, subequal in length. A. 17-18, com- 
mencing a little in advance of the dorsal, its longest rays a 
little longer than those of the dorsal and equal to the length 
of pectoral, which is 43-5 times in the length of head. Origin 
of ventrals nearly equidistant from posterior part of eye 
and base of caudal. Caudal slightly emarginate. Caudal 
