Las FISHES OF SINALOA. 505 
These specimens seem to be identical with Paralichihys 
adspersus, described from Callao by Steindachner. The 
original types have on the average more gill-rakers than 
we find on our Mazatlan specimens, but this character is 
‘subject to variation, and no other distinction appears. 
In one of Dr.Steindachner’s types from Callao (11,417, 
Mus. Comp. Zool.) we find the gill-rakers longer, 6+-17; 
depth 2% in length; D. 67; A. 51; scales 120; arch of 
lateral line barely twice as long as high, nearly 5 in straight 
part; maxillary 2% in head. 
Mr. Garman has kindly examined for us six other 
specimens, with the following results: 
‘*Paralichthys adspersus from Callao has gill-rakers— 
47 above, as long as the eye; 
17 below. 
jz about % as long as the eye. 
zi; nearly as long as the eye. 
= about % as long as the eye. 
~ about % as long as the eye. 
iw, near 34 as long as eye.” 
—(Garman, in lit., May 3, 1895.) 
Family SOLEID&. 
229. Achirus mazatlanus (Steindachner). LENGUADO 
DE Rio. (Solea pilosa Peters.) 
Very abundant in the fresh waters of the Rio Presidio 
below the village, varying considerably in color, and 
somewhat in form. One specimen was taken in the 
brackish waters of the estuary. 
230. Achirus fonsecensis (Richardson). 
Two specimens found in the Rio Presidio with Achzrus 
mazatlanus; not seen at Mazatlan. 
2p SER., VOL. V. (33 ) August 15, 1895. 
