34 FISHES FROM BRAZIL 



spot on the base of the caudal rays above and below. The difference in the 

 width of the band of teeth as given by Dr. Eigenmann, "depth of inter- 

 maxillary band of teeth in front equals a diameter of the eye" in this species, 

 and "depth of intermaxillary band of teeth scarcely more than half as wide 

 as eye" in A. dentatus is not such a difference as might appear, for it is 

 usually considerably more than half as wide as the eye in the latter species, 

 and the difference between them is as much a variation in the size of the 

 eye as of the teeth. When the bands of teeth are directly compared with 

 each other it is only a little wider in A. ucayalensis. 



106. Ageneiosus dentatus Kner. 



Common in the market at Para, where several specimens were taken. 

 On the back are indications of cross bands or mottled spots, especially in 

 the young, and the color is made up of rather coarse dots. 



Family HYPOPHTHALMID^. 



107. Hypophthalmus edentatus Spix. 



This species is very common in the market at Para, where a series of 

 specimens from 4 to 16 inches in length was collected. These show very 

 well the branching tubes of the lateral line system developing with size, 

 and also shortening of the barbels, as described by Dr. Eigenmann. 



108. Cetopsis caecutiens Lichtenstein. 



A single specimen from Para, and two from the Rio Madeira, the 

 latter collected about 400 miles above the mouth of the river by Dr. Baker 

 and Mr. Mann. 



In the largest one, 10^/2 inches in length, the skin has so grown over 

 the eye as to almost completely hide it. 



Family LORICARID^. 

 109. Farlowella hargreavesi Eigenmann. 



This species was described as new in my manuscript, but it has recently 

 appeared under the above name in Doctor Eigenmann's Freshwater Fishes 

 of British Guiana (Mem. Carnegie Mus. Vol. V, p. 252). I leave my 

 description and comparisons stand as I have written them, however, as they 

 show some slight variation from, and add a little to, the description of 

 the type. 



A single specimen, 8 inches in length, was collected in the market at 

 Para, 



