roL. XIII, 

 1890. 



] PROCEKDINGS OF THE NATIONAL MUSEUM. 97 



Distance from Irout of dorsal to base of caudal 1 i in its distance from 

 tip of suoiit. Yeut exceptional iu position, immediately iii front of anal 

 fin. Base of anal If in Lead. Caudal rather acute, If in bead. Pec- 

 torals 2f in head, a distinct fleshy fold at base. 



In spirits, uniform dark olivaceous, lower side of head and disk light. 

 Pectorals dusky. Vertical fins with a black bar at base, then a white 

 bar, followed by a wide, dusky area, and narrowly maroined with white. 

 Caudal with all these marks except the black bar, having the posterior 

 outlines curved, following margin of fin. 



One specimen, l.i inches long, from Magdalena Bay, Lower California. 



59. Bathymaster hypoplectus sp. nov. 



Differing from both B. signatus and B.jordani iu the broadly united 

 gill membranes, and from signatus iu the scaly cheeks, the smaller 

 scales, etc. 



Head 4| in length ; depth 7. D. 46 ; A. 33. Length about 8 inches. 



Head and body compressed elongate, the anterior profile of head com- 

 pressed, declivous. Mouth somewhat oblique, at lower side of snout, 

 small, the maxillary reaching vertical from middle of pupil, 3^ in head. 

 Snout very slightly shorter than orbit, 4^ in head ; diameter of orbit 

 4 in head. Teeth well developed, in broad bauds on jaws, vomer, aud 

 palatines, the vomer aud palatine patches nearly continuous. 



Brauchiostegal membranes broadly united, free from isthmus, form- 

 ing a fold whose depth exceeds half diameter of orbit. Margin of pre- 

 opercle adnate behind, slightly free below, furnished with a series of 

 six conspicuous mucous pores. Head without spines, ridges, or fila- 

 ments. Inner margiu of shoulder girdle conspicuously notched above 

 and below, but without hook. Gill rakers tubercular, few iu u amber. 

 A well marked slit behind last gill. 



Distance from nape to front of dorsal fin equals its distance from 

 posterior border of eye. Anterior ten or twelve dorsal rays simple aud 

 apparently not articulated, but flexible aud not spine like. Distance 

 from front of anal to base of veutrals 2J iu its distance from base of 

 caudal. All but first third of dorsal rays, and all of anal rays forked 

 at tip; dorsal not high, the longest rays half head; highest anal ray 

 equals snout and half eye. Last dorsal and anal rays entirely discou- 

 nected from caudal, leaving a free space on caudal peduncle one-half 

 diameter of orbit. 



Veutrals 1, 5, in advance of base of pectorals, narrowly triangular, 

 the inner rays longest. Pectorals with curved base running back- 

 wards and downwards, the rays all branched, eighteen in number; the 

 width of base of fin 3^ in head, the longest ray 1^ in head. Caudal 

 rounded, two thirds length of head. 



Body covered with small, i>artially eaibedded, cycloid scales, includ- 

 ing antedorsal region, belly, breast, and area in front of base of pec- 

 Proc. N. 31. 90 7 



