20 FISHES FROM BRAZIL 



as in Dr. Cope's drawing of the type. There are from 47 to 50 simple 

 scutes along the median ventral line, and from 7 to 9 pairs are crowded in 

 around the vent. 



60. Mylosoma herniarius (Cope). 



Two specimens were collected by Mr. Mann and Dr. Baker just below 

 the mouth of the Madeira River in the Amazon. They are slightly less 

 deep than the picture published by Mr. Fowler (Proc. Phil. Acad. Sci. 1906, 

 p. 477, fig. 56), which has the depth equal to the distance from the snout 

 to the adipose dorsal. In these specimens the depth is equal to the same 

 distance, less % the diameter of the eye. The sigmoid curve of the ventral 

 outline is scarcely so pronounced. The anal is covered with scales (Mylo- 

 soma) and on one of the specimens it is angulated posteriorly, as it usually 

 is in M. aureum, while in the other it is more evenly rounded as in Mr. 

 Fowler's drawing. The scutes along the ventral ridge number 40, and there 

 are none surrounding the vent. 



61. Raphiodon vulpinus Spix. 



Several specimens, a foot in length, were collected at Para. The depth 

 of the body is equal to the length of the head, or is contained from 5J4 to 

 5^ times in the length to the caudal. The eye is contained from 43^ to 5 

 times in the head, and the maxillary 1^ times. The cheek is almost en- 

 tirely covered by the expanded suborbitals. The adipose eyelid has a ver- 

 tical elongate opening, as in some of the herring-like fishes. The pectoral 

 is a trifle shorter than the anal base, or one-fourth of the length to the 

 caudal. The front of the dorsal is a little behind that of the anal. The 

 caudal is not rounded, as in the picture published by Spix ( Pise. Bras, 

 tab. 26), but is angulated at the tips of the outer rays and double lunate 

 behind, with the middle one or two rays produced considerably beyond the 

 rest of the fin and carrying the lateral line to their tips. The ventrals are 

 in front of the anal a distance equal to the combined length of the snout 

 and the eye. 



62. Hydrolycus pectoralis (Gunther). 



A couple of specimens, 8 inches long, were taken by Dr. Baker and Mr. 

 Mann in the Amazon River near the mouth of the Madeira River. 



The body is much deeper than the length of the head, and is con- 

 tained 3J^ times in the length to the caudal; the head, without the pro- 

 jecting jaw, 4^ times. The pectoral is scarcely as long as described for 

 the type. In one specimen it scarcely extends to the front of the dorsal ; 

 in the other it extends just to, though its length as contained in the entire 



