1916.] Ostium mid Nichols, Shore Fish'es from Lower California. 155 



across upper part of opercle, thence backward along the upper part of the side, be- 

 coming faint and broken into specks towards caudal. A faint broken streak extends 

 from the eye downward and backward across the lower part of the opercle. Caudal 

 fin dusky, its upper margin whitish. 



Type Xo. 5203 American Museum of Natural History, West San Benito I., 

 March 9, 1911. 1 specimen, total length (>§ inches. 



Five smaller specimens, 4 to 4| inches long - were taken at electric light 

 in Port San Bartholome, March 14. The peculiar swollen appearance of the 

 hinder half of the trunk is as evident in these as it is in the type. The dorsal 

 rays in these vary from 35 to 38; the body rings are all 18, the caudal rings 

 vary from 44 to 48. Otherwise there is a close agreement with the type in 

 all structural points. In color, all show the stripe along the side of the 

 snout, the oblique line downward and backward from the eye (which is more 

 distinct than in the type) and the line across the upper part of the opercle. 

 The dark line along the side is not so distinct, but is more or less fused with 

 brownish spots above and below it and broken by lighter irregular cross- 

 bands. The white upper margin of the dusky caudal is more conspicuous 

 than in the type. The largest of these approach the type more nearly than 

 the smaller ones in the matter of coloration. 



Hippocampus ingens Girard. Sea Horse. 



Head of Concepcion Bay, April 6, one specimen. 



Dr. Townsend adds the following note: 



" The Sea horse of this region cannot be a common species as only one 

 small living example was taken during the almost daily seining operations 

 of the voyage. Two large dried specimens w T ere found on the beach at 

 Carmen Island, the larger being about ten inches long. The species has 

 been recorded from but few points between San Diego, California and Mazat- 

 lan, Mex., the extremities of its known range." 



Atherinid.e. Silver-sides. 

 Leuresthes tenuis {Ay res). 



Ballenas Bay off Abreojos Point, one specimen six inches long, an adult 

 female with eggs. Although this specimen is from the type locality of L. 

 crameri Jordan and Everman, it has the small scales, 74, and the fin formula, 

 D. V. 1, 9; A. 1, 22, of L. tenuis. In some measurements, however, it 

 agrees more nearly with L. crameri, as head 4.8; depth 5.3; eye in snout 1.5, 



