1888.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 137 



DESCRIPTION OF EIGHTEEN NEW SPECIES OF FISHES FROM 

 THE GULF OF CALIFORNIA. 



BY OLIVER P. JENKINS and BARTON W. EVERMANN, 



Iii July, 18S7, the writers spent some time at Guaymas, on the east 

 coast of the Gulf of California, making collections of fishes and other 

 objects of natural history, in the interests of the institutions with which 

 they are respectively connected (De Pauw University and the Indiana 

 State Normal School) and of the Indiana University. 



Among the iishes collected at this time eighteen species appear to be 

 new to science. The types of all these are now in the United States 

 National Museum. 



A detailed account of the general collection is now in preparation 

 and will soon be ready for publication. 



We desire in this connection to express our indebtedness to Dr. David 

 Starr Jordan for the use of his library and collections. 



1. Siphostoma arctum, sp. now (Type, No. 39639. U. S. N. M.) 



Head 11 in body to base of caudal; depth 20; dorsal 20, on about 

 0+5 rings; rings 15 + 39. 



The top of tlie head scarcely carinated, the opercle without a promi- 

 nent ridge. Snout 2.35 in head, keeled in the median line. Dorsal 

 slightly higher than the width of a body ring, its length about equaling 

 the head. Pectoral 3 in head. Distance from tip of snout to vent 

 equals one-half the length of the tail. Caudal is about 3 in head. 



Color in alcohol pale, with no evident markings except on the under 

 side of the tube of the snout, and as far back as the posterior margin of 

 the eye, where there are dark mottlings. 



One specimen was obtained from the bay at Guaymas, 9 cm in length. 



2. Atherina sardina, sp. now Feje Iitje of the local lishennen. (Type, No. 39633, 



U. S. N. M.) 



Head 4£ in length to base of caudal (5 in total); depth G (Gf ) ; eye 

 3£ ; D. IV, 1—9 ; A. 25 ; Lat, 1. G— 15— 5. 



Body rather slender, elongate, greatly compressed ventrally. Head 

 short, greatly flattened above; snout a little greater than eye, blunt, 

 with two evident folds or grooves across it; maxillary protractile, very 

 broad, not reaching orbit; cleft of mouth oblique, curved, the lower 

 jaw but slightly included. Eye moderate, 3£ in head, 1^ in interorbital 

 space. Teeth in each jaw very small and wide-set, none on vomer or 

 palatines ; gill rakers long and slender. First dorsal short and low, its 

 origin a trifle nearer tip of caudal fin than end of snout, entirely in front 

 of origin of anal. Space between first and second dorsals equals the 

 length of both snout and eye. Distance from beginning of second 



