IQTHOSIDAE. 



119 



Three specimens, Nos. 3148-49-50, 9j, Si and lOg inches long from Tobo- 

 guilla Island, Panama Bay. M. C. Z. 29617 (1 specimen). 



The specimens from Acapulco differ somewhat from those from Toboguilla 

 Island, which are here provisionally identified with those from Acapulco. The 

 Acapulco specimens from geographical considerations should be most like typical 

 K. elegans, which came from Mazatlan, but they differ from the description 

 given by Jordan and Evermann (loc. cit.), in having 12 anal rays instead of 11, 

 larger eye, longer snout and maxillary, and somewhat longer pectoral ; and also 

 in having 13 dorsal rays instead of 12. 



Gilbert and Starks {loc. cit.), in their remarks on specimens they have 

 identified as K. elegans, call attention to this difference in the fin rays. The 

 Acapulco specimens differ also from those from Toboguilla in having a somewhat 

 shorter head, smaller eye, slightly shorter maxillary, and a longer anal base. 

 In the Toboguilla specimens the snout is somewhat more vertical, the forehead 

 is a little more prominent and the throat somewhat concave in outline, which 

 in the Acapulco specimens is nearly in line with the ventral curve. 



Proportional measurements of two specimens from Acapulco. 



Proportional measurements of three specimens from Toboguilla. 



