1660 Bulletin 4.7, United States National Museum. 



blance. (Scombridcv, group Cyttina, Giinther, Cat., n, 393-396, 1860; 

 Cyttidw, Gunther, Intr. Study Fish., 450, 1884.) 



ZEIN^E: 

 a. Dorsal spines very strong, more or less filamentous ; anal spines 3 or 4. Bony spinous 



plates present along bases of vertical fins and between ventrals and anal. 

 b. Anal spines 3 ; both dorsals with strong bony spinous plates at base ; ventral 

 rays I, 6 or I, 7. ZENOPSIS, 651. 



YTTINA : 



aa. Dorsal spines low; anal spines 1 or 2; vertical plates little developed. 



c. Body without large bony plates or warts, the skin covered with small scales; 



base of dorsal and anal with bony plates. ZENION, 652. 



cc. Body with large conical bony protuberances, 2 on each side of the back and 



many on the belly. OREOSOMA, 653. 



651. ZENOPSIS, Gill. 



Zenopsis, GILL, Proc. Ac. Nat. Sci. Phila. 1862, 126 (nebulosus). 



Body ovate, much compressed, without scales, and without warts or 

 humps in the adult. Head deeper than long, its anterior profile steep. 

 Mouth rather large, upper jaw protractile ; teeth small on jaws and vomer, 

 none on the palatines. Various bones of the head and shoulder girdle 

 armed with spines. Series of bony plates along the sides of the belly and 

 the bases of both dorsal and anal, each plate armed with a strong spine. 

 Eye large, placed high. Gill rakers short. Dorsal spines very strong, 

 usually 10 in number, some of them filamentous; anal spines 3; ventral 

 fins long, the rays I, 6 or I, 7. Caudal peduncle slender, the fin not 

 forked. Three species known, differing from the European genus Zeus,* 

 mainly in the presence of 3 anal spines instead of 4, and in the greater 

 development of the spinous armature. Pelagic. (^v,zeus; oi/>i$, appear- 

 ance. Zeus is from Zsv$, Jupiter.) 



2076. ZE1VOPSIS OCELLATUS (Storer). 



Head 2i; depth If. D. IX, 26; A. Ill, 24. Body short, deep, com- 

 pressed. Skin wholly naked, except for the bony bucklers, w r hich are 

 armed each with a central spine hooked backward and marked with 

 radiating ridges; 7 bucklers along the base of the dorsal, the fifth and 

 sixth largest; 2 on the median line in front of the ventrals, the second 

 largest ; 1 median plate, 6 pairs between ventrals and anal, and 4 along 

 the base of the anal. Top of the head with roughish ridges, but without 

 spines; a spine at the base of each dentary bone ; the broad maxillaries 

 each with a supplemental bone ; teeth nearly obsolete. Eye large, much 

 nearer gill opening than tip of snout. Gill rakers short. Caudal pedun- 

 cle very slender, caudal fin short and rounded; pectorals very short; ven- 

 trals large, the rays I, 6, the first soft ray closely appressed to the spine; 

 anal spines short arid stout, the soft rays, like those of the dorsal, low; 

 dorsal spines filamentous. Color silvery, nearly plain ; a black lateral 



* The European genus, Zeus, containing the common "John Dory," Zeus faber, a well- 

 known food-fish in the Mediterranean, has not been found in American Avaters. 



