236 DR. A. GUNTHER ON NEW AMERICAN FISHES. [MlV. 20, 



Fk. 3. 



Loricaria lanceolafa, p. 235. 



LoRiCARiA PLATYSTOMA. (Fig. 4, p. 237, and fig. 5, p. 238.) 



Snout of moderate length, slightly pointed ; mouth broad, upper 

 lip well developed, lower semicircular, of moderate width, papillose, 

 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 horizontal diameter being two-thirds of 

 the width of the interorbital space, which is slightly concave. Scutes 

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

 being obtuse; they are confluent on the twenty-first scute. L. lat. 

 29. 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 



