NO. 9 AMliRICAN" FISHES — HILOEDRAND I 5 



Culor brown above lateral line, pale brownish to pale silvery below ; 

 back posteriorly with slight indications of narrow cross stripes; a 

 dark blotch on opercle, and another one at base of caudal ; fins plain 

 translucent, the anal and ventrals a little paler than the other fins. 



This apparently new sjjccies is represented in the collections of the 

 National Museum by the holotype (No. 46518), IJ5 mm. ( v4 'imi. 

 to base of caudal) long, the only specimen kntjwn, which was taken 

 in the Gulf of California, at 30° 18' N., 1 13°05' \V., by the Albatross, 

 on April 24, i88«). 



The deep body, the almost straight gently elevated dorsal profile 

 of the head, the large scales, rather small number of gill rakers, the 

 long slender dorsal spines, and the short anal spines distinguish this 

 species from the others of the genus of the Pacific Coast. 



This species was named iiuwicatium because the type was taken in 

 Mexican water. 



