740 PROCEEDINGS OF THE ACADEMY OP [NoV., 



serial. No vomerine or palatine teeth. Tongue small, elongate, and 

 free in front. Anterior nostril circular, nearly midway between 

 tip of upper jaw and front of eye. Posterior nostril well separated, 

 slit-like, in advance of front of orbit. Interorbital space broad, and 

 slightly conic. Top of head posterior to eyes conic. 



Gill-opening large, extending forward till nearly opposite front rim 

 of orbit. Rakers long, slender, compressed, 7 + 37 on first arch, 

 and longest about | of longest filaments. Filaments numerous and 

 long. Pseudobranchiae absent. Isthmus long narrow and branchi- 

 ostegal membranes not united. 



Scales small, cycloid, somewhat imbricated, and with uneven edges. 

 About six rows on cheek, and first three small and close to eye. With 

 exception of snout, jaws and space in front of eye, head scaled. No 

 scaly flaps except small one between bases of ventrals. 



Spinous dorsal in groove, weak, and inserted a little nearer tip of 

 snout than tip of caudal. Soft dorsal small, inserted a little nearer base 

 of caudal than origin of ventral, or nearly over middle of base of anal. 

 Like anal rays, anterior highest. Anal begins about opposite tip of 

 depressed dorsal or a little nearer base of caudal than origin of pectoral. 

 Caudal forked, lobes pointed. Pectoral high, broad at base, and fal- 

 cate tips not reaching base of ventral. Ventral small, pointed, and 

 not reaching opposite origin of spinous dorsal. Anus remote from 

 ventrals, near front of anal. 



Color in alcohol dull brown, paler beneath, and all more or less 

 brassy. An indistinct longitudinal band about as wide as eye from 

 base of pectoral to base of caudal. Fins plain uniform brown. Peri- 

 toneum black. 



Length 7h inches. 



Type of Atherinopsis californiensis Girard, No. 10,208, A. N. S. P. 

 San Francisco, California. Dr. A. L. Heermann. 

 '( Two co-types with same data, also other material from Monterey 

 Bay and San Diego, has been compared. 



Atherinops magdalenae sp. nov. Plate XLII (lower figure). 



Head 4^; depth 5; D. V-I, 10; A. I. 22; P. I, 14; V. I, 5; scales 47 

 in a lateral series to base of caudal; 10 scales obliquely back from 

 spinous dorsal to base of anal in front ; width of head 2| in its length ; 

 depth of head If; snout 3^; eye 4; maxillary 3^; interorbital space 

 3|; pectoral a little shorter than head ; ventral 2 ; least depth of 

 caudal peduncle 2h. 



Body well compressed, lower profile more convex than u]:>per, and 



