80 Fretp Museum or Naturat History—Zo6.ocy, Vor. X. 
Acanthicus canensis sp. nov. 
Type No. 7581, F. M. N. H.; length 76 mm.; Rio Cana, Cana, 
Panama. . 
Head 2.7 to 2.8; depth 6.0 to 7.0; D. I, 8; scutes 22 or 23. 
Body elongate, depressed; head evenly convex from snout to nape, . 
its width .g to 1.1 in head, its depth that of body, 2.3 to 2.6 in head; 
eye 7.0 to 8; interorbital 3.2 to 3.6; snout 1.5 to 1.7; mandibular ramus 
3.4; interopercular spines present, not entirely retractile under opercle, 
the longest spine 1.5 to 2.1 in head, its tip nearly reaching middle of 
pectoral spine; 5 to 7 of spines of interopercle longest, the remainder, 
about 10, very short; abdomen and under side of head naked; first 
dorsal ray 1.5 to 1.7 in head; base of dorsal 1.4 to 1.6 in head; anal fin 
and adipose fin absent; pectoral spine reaching from about first fourth 
to first half of ventrals, its length .9 to 1.2 in head; depth of caudal 
peduncle 2.9 to 3.2 in head; caudal obliquely truncate; scutes spinulose, 
not keeled. : 
Color dark olivaceous, lighter below; all of the fins with dark spots 
on rays, these forming indistinct bars; interradial membranes plain. 
Tuyra River basin. 
Loricaria capetensis sp. nov. 
Type No. 7582, F. M. N. H.; length 164 mm.; Rio Capeti, Panama 
’ Head 4.7; depth 12; D. 7; A. 6; scutes 19 + 11. 
Body elongate, moderately depressed, the dorsal region not elevated; 
width of head 1.4 in its length, its depth 2.6 to 2.7; eye 6 in head, the 
orbital notch present; interorbital 5.1 to 5.3 in head; snout rounded, 
the profile from interorbital to its tip straight, its length 1.9 in head; 
upper lip with a fringe of blunt tentacles; the lower lip broad, papillose, 
with marginal fringe; top of head strigate, a slight double occipital 
keel, the two portions meeting at the apex; the two nuchal plates each 
with a pair of keels; lateral keels moderately strong, not completely 
united on posterior part of the body; abdomen with 2 or, irregularly 
3 rows of plates on its middle, these separated from the lateral ones 
by a broad naked strip; between the pectorals the median strip is wider 
and broken up into several smaller plates; anal plate in contact with 
3 plates, the anal buckler composed of about 12 plates, first dorsal ray 
.g in head; pectorals reaching to about first fourth of ventrals, 1.2 in 
head; ventrals 1.3; width at anal 4.8 to 5.4 in its distance from base 
of caudal; upper lobe of caudal greatly produced, its length in the type 
115 mm, 
Color brownish, back with 4 or 5 cross bands; fins spotted, the spots 
