276 REPORT OF COMMISSIONER OP FISH AND FISHERIES. 



Family LEPIDOPODIDiE. 



16. Lepidopus xantusi Goode & Bean. 



Lepidopus caudatus Jordan & Gilbert, Proc. U. S. N. M. 1882, 358, Cape San 

 Lucas; not of Euphrasen. 



Lepidopus xantusi Goode & Bean, Ocean. Ichth., 519, 1896; same type; no 

 description. 



Head 4f in body; depth 3 in head; eye 5£; interorbital space 8£; snout 3; 

 maxillary 3£ ; D. 82 ; A. n, 45. Jaws with long, sharp teeth in front, fol- 

 lowed by single rows of weaker ones arranged in groups of twos and threes. 

 Height of dorsal, near middle of body, 3 in head. Anal preceded by 2 

 scutes, the first minute, the second wide, strongly keeled, its length f 

 diameter of eye. Pectoral of 12 rays, its length 2 in head. Each ventral 

 consists of a flat, keeled spine followed by a minute ray. This species is 

 known from two small mutilated specimens, both found on the beach near 

 San Jose del Cabo, Cape San Lucas. The type was taken by John Xantus 

 about 1860, and recorded by Jordan & Gilbert in 1882 as Lepidopus caudatus. 

 The second, of about the same size (5| inches), was taken by Mr. McGregor 

 in 1897. From the latter the above account was taken. The species differs 

 from Lepidopus caudatus iu the much shorter dorsal and longer anal. (D. 

 103; A. 24, besides rudiments, in L. caudatus.) 



Family CORYPH^JNID^J. 



17. Coryphaena equisetis Linnaeus. Head 4f ; depth 5; D. 51; A. 24. Eye 3^, 



large, without adipose eyelid. Nostril in middle of snout, vertically oblong, 

 rather small, anterior opening scarcely visible. Snout blnntish, 3*. Mouth 

 slightly oblique; maxillary 2£ in head; narrow at tip, without distinct sup- 

 plemental bone. Preorbital very narrow, 4 in head. Jaws each with a 

 broad band of small, sharp, rather wide-set teeth; bands of villiform teeth 

 on vomer, palatine, and tongue. Body elongate, little compressed, formed 

 as in a mackerel ; head broad above, with a conspicuous crest. No pseudo- 

 branchiae; branchiostegals subtruncate; opercles strongly striate. Dorsal 

 beginning near opercle, posterior ray longest, last few rays pencil-like, 

 resembling finlets, but not divided at base; anal without evident spine, first 

 rays longest, 5 in head, last rays slightly free at tip, but less so than in 

 dorsal ; caudal peduncle slender, rather long ; caudal lobes long and sharp, 

 about as long as head; ventrals long, depressible into a deep groove on 

 abdomen, If in head ; ventral rays I, 5 ; pectoral very short, falcate, 1* in 

 head. Scales cycloid, more or less elongate on each side of head, along base 

 of anal more or less bony, elongate and spine-like, closely imbricated; along 

 ventral groove and other lower parts somewhat similarly modified ; lateral 

 line somewhat undulate and a little arched in front. Color dark blue-black 

 above, lower parts paler and nearly uniform. 



This specimen is probably the young of Coryphana equisetis. It seems to 

 differ from Coryphaena equisetis as described, in color, in not having an angu- 

 lation in lateral line, in the longer head, in having the opercle striated for 

 its whole length, in elevated last rays of dorsal, and possibly in modified 

 scales of belly. 



One specimen, 9 inches long, from San Benedicto Island. 



Family CARANGID2B. 



18. Trachurops crumenophthalmus (Bloch). Six specimens from Socorro Island. 



ZALOCYS Jordan & McGregor, new genus. 

 This genus is closely allied to Hypodis Rafinesque (=Lichia Cuvier), differing in 

 the absence of a procurrent spine before the dorsal, iu the cultrate thoracic 

 region, and in the weaker teeth. Hypodis is scarcely different from Trachi- 



