1881.] NATURAL SCIENCES OF PHILADELPHIA. 119 



the fish. Ventrals two-rayed, very slightly in advance of the 

 jsectorals, which are about equal in length to the distance of their 

 base from the eye. 



Color (in spirits) dark bla.-kish brown, mingled with white 

 upon top, sides and lower parts of head. Interorbital area and 

 top of snout white. 



A single specimen dredged off San Jose Island, Amortiguado 

 Bay, Gulf of California. Total length 1-60 in. Head 0-25 in. 



The example is broken across, the branchiostegals are defec- 

 tive, the caudal fin broken, and some fin- rays missing, so that the 

 fin formula cannot be accurately given. The dorsal fin has above 

 sixty raj^s. The bod}' is much moi-e slender than that of P. 

 leucotsenia Bleeker, and there is no trace of the longitudinal bluish 

 white band of that species. 



Apodichthys univittatus, nov. sp. 

 D. circa 95. A. ca. 1-40. 



Body elongate, much compressed, band-like, presei-ving almost 

 the same depth to about the posterior fifth of the body, thence 

 tapering more rapidly to the caudal fin. 



Head seven, depth nearh^ ten times in the total length ; depth 

 of caudal peduncle about one-half of that of body. 



Snout obtuse, about two-thirds as long as the diameter of the eye, 

 the upper profile of the head a continuous curve from snout to occi- 

 put. Interorbital area highly convex transversely, about equal in 

 width to half the diameter of the eye. Ej^e entirely lateral, round, 

 contained entirely in the anterior half of the head ; iris golden. 



Mouth small, the posterior extremity of the maxillary reaching 

 to the anterior margin of the eye. Teeth small. 



Branchiostegals five. 



Dorsal fin continuous with but distinct from the anal, arising 

 A' ertically above the tip of the operculum, and composed of spines 

 only. Anal preceded by a long, sharp, slender spine of V-shaped 

 transverse section, the hollow side anterior, the length of the 

 spine equal to about half the depth of the fish. Distance from 

 anal spine to tip of operculum a little more than to tip of caudal. 

 Caudal with numerous accessory rays, so that its sides are almost 

 straight, posterior margin broken in specimen, all the rays simple. 



General color (in spirits) light reddish, the vertical fins rather 

 bright, and the top of the head reddish brown. Tip of snout 

 brown, A silvery band (possibly bluish in life) from the tip of 



