133 FISHES OF SINALOA. 505 



These specimens seem to be identical with Paralichthys 

 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}4 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 — 

 7 above, as long as the eye; 



17 below. 



T 5 T about -A, as long as the eye. 



T \ nearly as long as the eye. 



T 3 T about y as long as the eye. 



T 5 T about Y^ as long as the eye. 



T 6 T near y as long as eye." 

 — (Garman, in lit., May 3, 1895.) 



Family SOLEID^E. 



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 Achirus 

 mazatlanus; not seen at Mazatlan. 



2d Ser., Vol. V. ( 33 ) August 15, 1895. 



