The Cavallas 



Colour, bluish, sides golden -or silvery; a very small, black 

 opercular spot; young sometimes with faint dark crossbands; fins 

 mostly grayish; anterior part of soft dorsal dusky; caudal yellow, 

 no black; no spot on pectoral; no axillary spot. 



Carangns medusicola is known only from the vicinity of 

 Mazatlan where it is very common on sandy shores. The young 

 of an inch in length are very abundant in the body-cavity of a 

 large translucent jelly-fish found about the Venados Islands in 

 January. This fish reaches a foot in length and is of some 

 food-value. 



Colour, clear blue above, silvery below; no bands or spots 

 anywhere, except a small, black axillary spot, and a blue-green 

 patch on back of caudal peduncle; pectoral bright yellow; anal 

 and caudal yellow, the lobes blackish; ventrals yellow; young 

 with a deep-blue spot above the eye in life. 



Carangns lugubris is a rare species found about rocky islands 

 in the tropics in both the Atlantic and Pacific. We have specimens 

 from Clarion Island of the Revillagigedo group, from Cuba, and 

 from off Mobile harbor. It reaches a length of 18 inches or 

 more. It is rather common about Cuba, where it is regarded as 

 poisonous, and its sale in the markets is forbidden. Its specific 

 name, lugubris, mournful, is from its dark colour and especially 

 its bad reputation, associated with the much dreaded Ciguatera, 

 a disease resulting from fish-poisoning. 



Carangus melampygus is widely distributed about islands in 

 the tropical Pacific and in the East Indies. It is known from 

 the Hawaiian Islands and from the Revillagigedos. It resembles 

 C. lugubris, but the anterior profile is scarcely gibbous, and the 

 side has many small dark-brown spots. 



Carangus guara is one of the largest species of the genus. 

 It reaches a length of 2 feet or more. It occurs in tropical 

 parts of the Atlantic, in the Mediterranean, along the coasts of 

 Africa, Brazil, and the Madeiras, but it is not certainly known 

 from the West Indies. From other species it may be known by 

 the absence of teeth on the vomer and palatines. 



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