FISHES OF THE FAMILY LOEICAEIID.E. 287 



Loricaria stvbelii Steind. Denkscbr. Ak. Wien, xlvi. 1882, p. 7, pi. iii. fig. 2; Eigenm. & Eigenm. 



Proc. Cal. Ac. (2) ii. 1889, p. 37, and Occ. Pap. Cal. Ac. i. 1890, p. 370. 

 Loricaria lypus Eigenm. & Eigenm. 1. c. and t. c. p. 373. 



Length of head 4f- 4§ times in the total length. Breadth of head If times in its 

 length, diameter of eye 6f-8 times, interorbital width 3|— 3f times, length of snout 

 2-j-2-g- times. Snout rounded ; upper surface of head, in the adult, without keels, 

 evenly convex ; orbit with a large notch ; lower lip smooth, or with very small papillee, 

 with somewhat larger papillae posteriorly and with short marginal fringes ; in the 

 male smooth, with entire edges, very large, covering the entire naked surface of the 

 head; free portion of barbel longer than the eye; upper jaw with about 10 minute 

 teeth on each side, lower jaw with about 20. 31 scutes in a longitudinal series, 

 20-21 + 10-11, the lateral keels sharp, separate throughout, the scutes otherwise not 

 carinate. Lower surface of head naked ; abdomen with 2 series of plates between the 

 lateral series; anal plate bordered anteriorly by 2 or 3. First dorsal ray a little longer 

 than the head ; pectoral spine extending to base of ventral ; second or third branched 

 ray of ventral the longest (in the adult) ; caudal emarginate. Breadth of body at level 

 of first anal ray of- 4 times in the distance from that point to the caudal. Numerous 

 dark spots on head and anterior part of body ; fins with small dark spots, which are 

 more numerous and in part confluent to form bars near the margins. 



Total length 290 mm. 



Four specimens (including the type of L. valenciennesi) : Surinam ; E. Amazon ; 

 R. Paraguay. 



22. LOEICAEIA ACUTA. 



Loricaria acuta Cuv. & Val. Hist. Nat. Poiss. xv. p. 472 (1810) ; Kner, Denksclir. Ak. Wien, vi. 



1853, p. 85 ; Gunth. Cat. Fish. v. p. 258 (1864) ; Eigenm. & Eigenm. Proc. Cal. Ac. (2) ii. 



1889, p. 38, and Occ. Pap. Cal. Ac. i. 1890, p. 375. 

 ? Loricaria castanea Casteln. Anim. Am. Sud, p. 46, pi. xxiii. fig. 4 (1855). 



Length of head 4f times in the total length. Breadth of head If times in its 

 length, diameter of eye about 6f times, interorbital width 5-j times, length of snout 

 2-g- times. Supraoccipital with a pair of keels, the head otherwise without keels 

 or ridges, evenly convex ; orbit with a large notch ; lips smooth, the lower with entire 

 posterior margins, in the male large, covering the entire naked surface of the head ; 

 upper jaw with 12-15 minute teeth on each side, lower jaw with 18-25. 31 scutes in 

 a longitudinal series, 20 + 11, all in front of the dorsal carinate, the lateral keels sharp, 

 separate throughout. Lower surface of head naked; abdominal plates in 1 series 

 between the lateral series ; anal plate bordered anteriorly by 3. First dorsal ray nearly 

 as long as the head ; pectoral spine extending to base of ventral, ventral to fourth ray of 

 anal ; caudal emarginate. Breadth of body at level of first anal ray 4f-5 times in tne 

 distance from that point to the caudal. Dorsal and caudal with dark spots on the 



vol. xvii. — rART in. No. 13. — October, 1904. 2 q 



