8o Field Museum of Natural History — Zoology, Vol. 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 .9 to I.I 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 

 .9 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 



