292 ME. C. TATE REGAN ON THE 



31. LORICARIA CARIXATA. 

 Loricaria carinata Casteln. Anim. Am. Sud, p. 46, pi. xxiii. fig. 3 (1855). 



Ldricaria lata Eigenm. & Eigenm. Proc. Cal. Ac. (2) ii. 1889, p. 30, and Occ. Pap. Cal. Ac. i. 

 1890, p. 384. 



Closely allied to L, catdphracta, differing in the broader head and body and smaller 

 eye. Head about 1\ times as long as broad ; diameter of eye 6-8 times in the length 

 of head. 33-35 scutes in a longitudinal series, 18-22 + 11-16. Breadth of body at 

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

 Olivaceous ; back with 5 dark cross-bands (in the young), which disappear in the adult ; 

 dorsal, pectoral, and ventral fins with dark spots in the young, uniformly blackish in 

 the adult ; caudal with a dark posterior margin and dark spots on the rays. 



Total length 243 mm. 



Eight specimens (including the type of the species) : R. Jurua ; It. Paraguay ; 

 Matto Grosso ; Goyaz. 



32. Loricaria simillima, sp. n. (Plate XVII. fig. 2.) 



Length of head 5 times in the total length. Breadth of head about 14, times in its 

 length, diameter of eye 6^—7 times, interorbital width 5^ times, length of snout twice. 

 Lower surface of head naked, except for a patch of small granular plates on each side 

 in front of the gill-opening ; abdominal plates extending forward to the level of the 

 inner angle of the gill-opening, or beyond ; lower lip broad, entirely covering the naked 

 part of the head. 34 scutes in a longitudinal series, 20 + 14. First dorsal ray 1} times 

 the length of head. Breadth of body at level of first anal ray 4-|-4i; times in the 

 distance from that point to the caudal. Olivaceous; fins, except the anal, with dark 

 spots or blotches or uniformly blackish. In other characters similar to L. catapkracta. 



Total length 175 mm. 



Three specimens from Canelos, E. Ecuador, collected by Mr. C. Buckley, referred 

 by Boulenger to L.filamentosa in his account of the Buckley Collection. 



33. Loricaria apeltogaster. 



Loricaria apeltogaster Bouleng. Proc. Zool. Soc. 1895, p. 528, and Trans. Zool. Soc. xiv. 1896, 

 p. 33, pi. vii. fig. 2. 



Length of head 4-|~5 times in the total length. Breadth of head 1^-1^- times in 

 its length, diameter of eye 8-84; times, interorbital width 5-54; times, length of snout 

 ly-2 times. 33-34 scutes in a longitudinal series, 18-21 + 13-15. Abdomen naked 

 or with very small granular plates, which are stronger and larger between the pectorals 

 and again posteriorly than in the middle region ; in addition the usual lateral series of 

 plates. First dorsal ray a little more or a little less than the length of head ; pectoral 

 spine extending to anterior \ of ventral in one specimen (the smallest), to well beyond 



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