290 ME. C. TATE REGAN ON THE 



27. LORICARIA EVANSII. 

 Loricaria evansii Bonleng. Ann. Mag. Nat. Hist. (6) x. 1892, p. 10, pi. i. 



Length of head 4 times in the total length. Breadth of head 1^ times in its length, 

 diameter of eye 7 times, interorbital width A.\ times, length of snout If times. Head 

 rough, snout pointed, its sides armed with strong bristles (in the male) ; supraoccipital 

 with a single serrated keel; orbit with a broad shallow notch; lips covered with short 

 filiform papillae, margined with rather long fringes; lower lip emarginate ; barbels 

 extending nearly to gill-opening; teeth strong, 4 on each side in both jaws. 31 scutes 

 in a longitudinal series, 19 + 12, all in front of the dorsal carinate, the lateral keels 

 strong and separate throughout. Lower surface of head naked ; abdomen with a 

 lateral series of 8 plates on each side, otherwise naked, except for numerous small 

 disconnected granules. First dorsal ray f the length of head. Pectoral spine 

 extending to anterior \ of ventral ; ventral rays increasing in length from the inner- 

 most outwards ; upper ray of caudal very elongate. Breadth of body at level of first 

 anal ray 3^ times in the distance from that point to the caudal. Back with 4 or 5 

 dark cross-bands ; fins with dark spots or bars. 



Total length 208 mm. 



One specimen : Bio Jungada, Matto Grosso. 



28. LORICAEIA NUDIVENTEIS. 



Loricaria nudiventris Cuv. & Val. Hist. Nat. Poiss. xv. p. 469 (1840). 



Closely allied to the preceding species. Head very rough, but without movable 

 bristles, its length 3f times in the total length, its breadth about 1^ times in its length. 

 Diameter of eye about 7^ times in the length of head, interorbital width 4^ times, 

 length of snout ly times ; supraoccipital with an obtuse median ridge. 32 scutes in a 

 longitudinal series, 21 + 11, the keels somewhat weaker than in L. evansii. Abdomen 

 naked, except for a lateral series of 4 plates on each side. 



Total length 220 mm. 



One specimen (type of the species) : Bio San Francisco, Brazil. 



29. Loricaria macrops, sp. n. (Plate XVII. fig. 3.) 



Length of head 4|-4f times in the total length. Breadth of head 14; times in its 

 length, diameter of eye 5f-0^ times, interorbital width 5^ times, length of snout twice. 

 Snout pointed ; supraoccipital with a pair of serrated keels ; orbit with a broad shallow 

 notch; lips covered with short tentacle-like papillae ; lower lip emarginate, with long 

 marginal fringes ; barbel extending nearly to outer angle of gill-cleft ; teeth moderately 

 strong, about 12 on each side in both jaws. 36-37 scutes in a longitudinal series, 

 23 + 13-14, all in front of the dorsal carinate, the lateral keels strong and remaining 

 separate throughout. Lower surface of head naked ; abdomen with 4 or 5 irregular 



