SILURUS (PARASILURUS) ARISTOTELIS. 
Glanis Arislolelis Ag., 1856, Pr. Aiiier. 
Acad., 333 (named). 
BY S. GARMAN. 
B. 13 (12-14) ; D. 3 ; A. 72 (67-76) ; C. 18 ; V. 9 
(9-10); P. 1 + 11 (11-12). 
In shai)e this species l)ears much resemblance to the iSi- 
lurus glanis of Linne. Its body is elongate, depressed 
anteriorly, strongly compressed from the vent backward, 
the greatest depth in an eight-inch specimen being about 
one-fifth of the length without the caudal fin, and that por- 
tion of the length behind the vent being rather more than 
seven-elevenths of the total length. The head is broad, 
depressed, slightly arched across the crown, little less 
than one-fifth of the entire length, a trifle more than one 
and one-third times as long as wide, and is broatl and 
rounded on the snout. Seen from above, the lower jaw 
appears to be the longer by the width of the band of teeth. 
There are but four slender threadlike barbels, of which the 
maxilhiry do not quite reach the end of tiie [)cctoral, not 
l)eing one and one-half times as long as the head, while the 
mandibulary are less than half as long as the maxillary. 
The eye is so small that its diameter is contained more 
than four times in the interorbital space, more than twice in 
the length of the snout, UKU-e than eight times in the length 
of the head, and is nearly equal to the distance from the 
base of the barbel. It is situated above and close to the 
(56) 
