1868.] DR. A. GUNTHER ON NEW AMERICAN FISHES. 239 



caudal). The outer ray of each fin (except anal) somewhat pro- 

 duced, that of the pectoral reaching to the middle of the ventral, 

 that of the dorsal and upper caudal lobe being somewhat longer. 

 Origin of the dorsal nearly opposite to that of the ventral. Uniform 

 brownish (in spirits). 



Two examples, 8 inches long, were obtained from the collection of 

 Dr. van Lidth de Jeude. They are probably from Surinam. 



LoRiCARiA LAMINA. (Fig. 6, p. 240, and fig. 7, p. 241.) 



Head and body excessively depressed ; snout of moderate length, 

 very broad, the liead being nearly as broad as long. Labial folds 

 thin, fringed ; a slender barbel at the angle of the mouth, extending 

 to or beyond the gill-opening. 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 behind ; its horizontal 

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

 interorbital space, which is nearly flat. Edge of the snout tren- 

 chant. Two very low median ridges placed close together run 

 from the parietal region to the praedorsal scute. Lateral ridges of 

 the body very conspicuous, confluent on the sixteenth scute. L. 

 lat. 32. There is a series of nine 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 four times and one-third in the total (without caudal). 

 Pectoral extending to the dorsal, the origin of which is opposite 

 to the root of the ventral. Upper caudal ray slightly produced. 

 Olive-coloured (in spirits), with some indistinct small round whitish 

 spots on the back of the trunk ; head with brown vermiculated 

 lines. 



Three examples, from 7 to 8 inches long, were collected by Mr. 

 Bartlett at Xeberos. 



Macrodon trahira, B1. Schn. 



Is found also in the Huallaga (Bartlett). I may remark that 

 specimens lately received from Trinidad are perfectly identical with 

 those from Brazil. 



Erythrinus tjnit^niatus, Spix. 



Examples from Trinidad (? E. cinereus. Gill) are not specifically 

 distinct from examples from the continent. 



Curimatus leuciscus. 



D. 11. A. 9. V. 10. L. lat. 64. L. transv. |^. 



The height of the body is contained thrice and two-thirds in the 

 total length (without caudal), the length of the head four times. 

 Upper profile of the head and nape straight. Snout a little longer 

 than the eye, which is three-fifths of the width of the interorbital 

 space. Snout somewhat projecting beyond the mouth ; the second 

 suborbital bone is more than twice as long as deep. Eye with a 



