138 NEW SPECIES OF FISHES, GULF OF CALIFORNIA. 



dorsal to base of caudal fin equals that from end of snout to insertion 

 of pectorals, the fin lying over middle of anal; the first rays are high- 

 est, their length being a little greater than the diameter of orbit. 



Origin of anal under anterior part of the interdorsal space, one and 

 one hall' times as far from snout as from base of caudal; length of its 

 base about twice that of the second dorsal, and about equal to head; 

 tlic first rays the longest. Pectorals short, about two-thirds length of 

 head. Ventrals small, short, inserted much in front of first dorsal and 

 a little nearer snout than base of caudal, their tins not nearly reaching 

 anal. 



Scales large, cycloid, not very firm. 



General color pale, each side with a broad lateral plumbeous band, 

 two scales in width, and equaling oue-fifth leugth of head; the upper 

 third of this band is much the darker; above the band the scales are 

 sparcely covered with tine dark punctulations ; none below the band, 

 and but few upon it. Top of head very pale, almost transparent on the 

 interorbital area, but in front and behind thickly set with small dark 

 spots; snout also marked with spots, lower jaw with some spots in 

 front, plain behind ; opercles plain ; fins all more or less plainly marked 

 with numerous small dark spots. 



This species is known to us from three specimens (No. , TJ. S- 



National Museum), 3.50, 3.49, and 3.3? inches long, respectively, taken 

 from the bay near the city of Guaymas. 



This species seems most closely related to A. eriarcha Jordan and 

 Gilbert^ from which it differs, notably, in the more slender body and in 

 the position of the fins. 



3. Atherinops regis, sp. nov. Pez del Rey. (Type, No. 39632, U. S.N. M.) 



Head 4.5 in body to base of caudal, the depth of head 8, its width 8; 

 depth of body 4.5, width 7; dorsal VII, H; anal I — 22; scales, iu lon- 

 gitudinal series, 4G, in oblique, 15. 



Color, in alcohol, pale, darker above the lateral band, the scales in 

 this region having fine punctulations, a silvery lateral band slightly 

 more than one scale wide, 0.6 the diameter of the eye, the upper third 

 bordered by a dark line. 



.Maxillary not reaching the pupil, the lower jaw shorter than upper. 

 Teeth in a single series, close set, incisor-like, weak, each with a short 

 lateral branch on the main stem, not Y-shaped; tips brown. 



Gill-rakers about 10 on lower limb of anterior arch, about 30 on 

 lower limbs of succeeding arches, not strong, equaling diameter of 

 pupil. 



Eye Large, equaling snout, 3.7 in head. 



Origin of spinous dorsal in front of vent, its distance from tip of 

 snout being but little more than half the length of the body, the ori- 

 gin of the first to the origin of the second dorsal contained 5.25 times 

 in the length of the body. The origin of first dorsal is much nearer to 

 the angle of the opercle than to the base of the caudal. The pecto- 



