ART. 20 NEW AND IMPERFECTLY KNOWN FISHES GINSBUEG / 



teeth on blind side small, pointed, somewhat recurved, in a single row. 

 Origin of dorsal somewhat in front of anterior margin of eye; its 

 anterior rays shorter than those over middle of body ; origin of anal 

 nearly under base of pectoral; end of vertical fins not far from base 

 of caudal, resulting in a short peduncle; a short, rather blunt spine 

 in front of anal origin, directed forward. Tip of pectoral on eyed side 

 almost but not quite reaching lateral line, pectoral of blind side but 

 slightly shorter than that on opposite side. Base of left ventral 

 attached to ridge of abdomen, that of bUnd side having a base not 

 quite so broad and attached slightly above abdominal ridge; tip of 

 left ventral extending but slightly more backward than right, both 

 about extending to base of fifth anal ray. A sharp bony expanded 

 process between the two ventrals, covered with thin skin so as to be 

 plainly visible exterior!}'', consisting of two flat, expanded, elongate, 

 spineUke bones, joined together lengthwise, with their tips projecting 

 beyond the skin, spinelike. 



Color pattern not evident, probably faded. Upper surface straw- 

 colored, irregularly clouded with bluish. A faint indication of three 

 blotches on lateral line, one at bend, one in front of caudal peduncle, 

 and one in between. Lower surface immaculate. 



Measurements. — Total length, 83. Length without caudal, 68. 

 Depth, 38 (55.5) ; head, 15.5 (22.8) ; maxillary, 3.8 (5.6) ; snout, 4 (5.9) ; 

 eyeball, 5.5 (8.1); interorbital, 1.2 (1.8); depth of caudal peduncle, 

 7.8 (11.5); caudal, 15 (22.1); left pectoral, 9.4 (13.8); right pectoral, 

 8.5 (12.5); left ventral, 10 (14.7); right ventral, 8.7 (12.8); straight 

 part of lateral hne, 41.5 (61). Length of a chord subtending the arch 

 in the lateral line, 3.5 times in straight part; length of a vertical from 

 the chord to the apex of the arch, 2.5 in the chord. 



Holotype.—U.S.^M. No. 91402. Off Dry Tortugas, Fla.; lati- 

 tude 24° 23'-25' N., longitude 82° 57'-58' W.; 50 fathoms; November 

 26, 1919; collected by the Albatross. 



Remarks. — The present species differs strikingly from Engyofhrys 

 sandi-laurentii Jordan and Bollman^ in having four spines, instead of 

 one, on the interorbital, and in having well-developed spinous proc- 

 esses on the ocular shelves in different positions than the mere 

 protuberances in the older species. The scales in sentus are less 

 numerous; and the shape of the body is different, the posterior half 

 not tapering quite so gradually to the caudal peduncle. 



Genus SYACIUM Ranzani 



SYACIUM GUNTERI, new species 



Diagnosis. — No spines on snout. Scales in 47 to 54 oblique rows 

 over lateral line, from upper angle of gill opening to base of caudal 

 (range of 28 individuals) , the number of perforate scales in lateral 



8 Proc. U. S. Nat. Mus., vol. 12, p. 176, 1889. 



