478 Dr. A. Giinther on some new Freshwater Fishes 



of tlie width of the interorbital space, which is flat. Thorax 

 and abdomen covered with irregular scutes. The length of the 

 head (measured to the occiput) is a little more than one-fifth of 

 the total (without caudal). Origin of the dorsal fin opposite to 

 the root of the ventral. Brown ; back with about five obscure 

 dark cross bands ; fins with broad, irregular, confluent, black 

 cross bands. 



Xeberos. 



Loricaria platy stoma. 



Snout of moderate length, slightly pointed ; mouth broad, 

 upper lip well developed, lower semicircular, of moderate 

 width, paj^illose, not fringed, and with a minute barbel near 

 the angle of the mouth. Teeth very fine, about forty on each 

 side of each jaw, the series occupying nearly the whole width 

 of the mouth. Orbit nearly circular, without notch, its hori- 

 zontal diameter being two-thirds of the width of the inter- 

 orbital space, which is slightly concave. Scutes remarkably 

 smooth, even the lateral ridges of the body and tail being 

 obtuse. There is a series of seven or eight scutes between the 

 roots of the pectoral and ventral fins. Thorax and abdomen 

 covered with small irregular scutes. The length of the head 

 (measured to the occiput) is contained five times and one-third 

 in the total (without caudal). Origin of the dorsal nearly op- 

 posite to that of the ventral. Uniform brownish (in spirits). 



Surinam. 



Loricaria lamina. 



Head and body excessively depressed ; snout of moderate 

 length, very broad, the head being nearly as broad as long. 

 Labial folds thin, fringed. Teeth minute, few in number; 

 there are about five on each side in the upper jaw, and seven 

 in the lower. Orbit small, with a shallow notch Ijehind ; its 

 horizontal diameter (the notch included) is three-fourths of the 

 width of the interorbital space, which is nearly flat. Edge of 

 the snout trenchant. There is a series of nine scutes between 

 the roots of the pectoral and ventral fins. Thorax and ab- 

 domen covered with small, irregular scutes. The length of 

 the head (measured to the occiput) is contained four times and 

 one-third in the total (without caudal). 



Xeberos. 



Curimatus asper. 

 D. 11. A. 12-13. V. 9-10. L. lat. 51. L. transv. ^. 



The height of the body is contained twice and two-thirds 

 or thrice in the total length (without caudal), the length of the 

 head thrice and one-half. Snout as long as the diameter of 

 the eye, which is a little more than one-half of the width of 



