124 CALIFORNIA ACADEMY OF SCIENCES 



Mouth slightly more oblique than in Larimus acdivis, much less so than in L. argenteus. 

 Premaxillaries anteriorly on a level with middle of pupil (lower part of pupil in L. acdivis). Maxillary 

 about reaching vertical from front of pupil, 2| to 2^ in head. Teeth minute, close-set, even, in a single 

 series in each jaw, none of them enlarged. Eye large, 3| to 4| in head. Interorbital space 4^ to 4-^. 

 Preopercular margin membranous, with flexible ribs ending in minute spinules. Gill-rakers very long, 

 two-thirds diameter of orbit, 19 or 20 on horizontal limb of arch. 



Dorsal spines high and flexible, the first two not noticeably thickened. Tenth spine shortest. 

 Third dorsal spine longest, 2 to 2\ in head. Soft dorsal very long, its base 2\ to 2i in length. 

 The longest dorsal ray equals length of snout and eye. Second anal spine very strong, 2| to 2^ in 

 head. Pectoral very long and narrow, i J^ longer than head, injured in most specimens. Ventrals 

 reaching to or slightly beyond vent, i^ in head. Caudal lanceolate, the middle rays much produced, 

 as long as head. Tubes of lateral line much branched. Definite scaly sheaths along bases of dorsal 

 and anal. Basal portions of membranes of vertical fins with series of scales. 



Bright silvery, the back grayish. Lining of cheeks black, a small black blotch on upper third 

 of axil. Ventrals, anal and lower caudal rays bright orange-yellow ; fins otherwise dusky-translucent. 



Rather common at Panama, where numerous specimens were secured. 



229. Larimus acclivis Jordan & Bristol. 



Plate XVII, Fig. 34. 



BOCATUERTA RALLADA. 



A common species in the Panama market. Our material agrees with the 

 types of the species in those points which are supposed to be distinctive of this Pacific 

 form. The black streaks are conspicuous, and the second anal spine is constantly 

 shorter than the soft rays, 2^ to 2f in the head. The region about the pseudobranchiae 

 is largely black. 



230. Larimus pacificus Jordan & Bollman. 



Not seen by us; the type dredged by the Albatross in Panama Bay, Station 

 2802, 16 fathoms. It was subsequently dredged in the Gulf of California, Stations 

 3021 and 3026, 14 and 17 fathoms. 



231. Odontoscion xanthops Gilbert. 



Plate XVII, Fig. 35. 

 Odontoscion xanthops Gilbert (Jordan & Evermann, 1898, p. 1426). 



Head 3 in length; depth 3S; dorsal XII, 27; anal II, 8; pectoral 17; pores in lateral line 50. 



Head and body elongate, compressed, narrow. Dorsal and ventral outlines nearly equally 

 curved. Profile slightly depressed over front of orbits, the snout bluntish, not protruding. Jaws 

 equal, the lower wholly included, the symphysis prominent, slightly passing the premaxillaries. 

 Mouth very oblique, the maxillary reaching slightly behind middle of eye, 2j^ in head. Tip of maxil- 

 lary broad. Mental and rostral pores of moderate size, not conspicuous. A series of slender canines 

 in lower jaw, preceded by an irregular outer villiform row, most evident toward symphysis. The 

 series of canines turns inward and backward on the symphyseal protuberance, the innermost pair 

 enlarged, directed backward. Upper jaw with a series of conical teeth, similar to those on sides of 

 mandible, separated by a considerable interspace from an inner scries of very small close-set teeth, 

 directed backward. Eye very large, subcircular, the longest diameter 3^ in head; snout 4J; inter- 



