190-1.] NATURAL SCIENCES OF PHILADELPHIA. 761 



Two examples from the island of St. Thomas, West Indies. The)' 



agree, and "both differ from the following example in the smaller 



head, which is at least 3f in its own length and that of the trunk. 



Pelamys afl6ne (Cantor). 



Thf/nnus affims Cantor, Journ. Ass. Soc. Bengal (Cat. Malay. Fish-), XVIII, 



1850, p. 106. Sea of Pinang. Giinther, Cat. Fish. Brit. Mus.. II, 1860, 



p. 363. (Type.) 



I provisionally retain this as a distinct form from that of the Atlantic. 



Cantor's fish may be identical, though East Indian and Micronesian 



examples need comparison. The single example from Honolulu, now 



before me, has a larger head than the West Indian examples, being 



contained less than 3^ or about 3^ in the length of head and trunk. 



Dr. Giinther's figure^^ of an example from the Seychelles shows the 



pectoral high in position, its origin level with the upper margin of the 



eye, a character which I have not observed as yet in any examples of 



Pelamys. 



Germo germon (Lac^pfede). 



ScombeT germon Lacepede, Hist. Nat. Poiss., II, 1800, p. .598. No locality. 

 Scomber germo Lacepede, /. c, IV, 1803, p. 1. Le grand Ocean austral, 



imprpprement appele mer Pacifique, vers le vingt-septieme degre de 



latitude nieridionale et le cent troisieme de longitude. [Eastern Indian 



Ocean.] 

 Germo germon Fowler, Journ. Acad. Nat. Sci. Phila., XII (2), 1904, p. 506, 



PI. 8, lower figure. 



Head 3^; depth 4; D. XIII-iii, 11, 9; A. iii, 11, 8; P. i, 31; V. i, 5; 

 about 158 scales in a lateral series to base of keel on caudal peduncle; 

 width of head H in its length; depth of head 1|; snout 3^; eye 5f ; 

 maxillary 2h; mandible 2\; interorbital space 2>\; first dorsal spine 2\; 

 height of soft dorsal, measured from middle of its base, 2f ; height of 

 anal 2|; least depth of caudal peduncle about lOf ; width of caudal 

 peduncle, measured across keels at their widest part, 4^; ventral 2h; 

 pectoral 3y in body; space between tip of caudal lobes when expanded, 



Body elongate, broad, fusiform, thick, and greatest depth about 

 middle of its length. Caudal peduncle broad, depressed, and with a 

 broad cutaneous keel on each side. 



Head deep, conic, and sides compressed. Snout conic, sides hardly 

 compressed. Eye anterior, high, with narrow adipose eyelids, and its 

 posterior margin midway in length of head. Mouth oblique, tip c£ 

 mandible even with snout, and maxillary reaching posteriorly till 

 opposite first third of eye. Maxillary with its upper portion slipping 

 under preorbital, its distal expanded extremity -f of orbit, and with a 



15 Journ. Mus. Godef. (Fische der Sudsee), V, 1876, PI. 95. 

 49 



