140 FISHKS VUOM GUAYMAS KVERMANN AND JENKINS. 



43. Nematistius pectoralis Gill. 



Pez de Gallo. 



XematiiiiinH pectoralis Gill, Proc. Acad. Nat. Sci. Pliila. 1862, 2.59 (Cape San Lucas); 

 .StciiulacliiKn-, Ichthy. Beitr. iv, 11, I87iy (Panama and Afagdahna Bay); Jordan & 

 Gilbert, Proc. U. S. Nat. Mus. 1881,277 (Picheliiofjo, Lower VaUfornia); Jordan 

 & Gilbert, Proc. U. S. Nat. Mas. 1885, :{75; Jordan, Cat. Fish. N. A., 72. 



Great numbers of small specimens of this fish were seeu, but no 

 larjje ones. 



Fifty-two specimens were retained. 



One of the largest of these gave the following measurements : 



mm. 



Total length 162 



Length to base of caudal 130 



Depth 45 



Head 41 



Eye 10 



Snout 10 



Longest dorsal rays 85 



Length of pectoral 39 



44. Oligoplites alius (Giinther). 



CureL 



Chnr'inemus alfns Giinther, Fishes of Central America, 1806, 433 (Panama). 



Ulii/opUtis aJtus, Jordan A: Gilbert, Proo. U. S. Nat. Mus. 1882, 374 (Panama); Jor- 

 dan & Gilbert, Bull. U. S. Fish Conmi. 1882, 106 and 110 (Mazatlan and Panama) ; 

 Jordan, Proc. U. S. Nat. Mus. 1885, 375 (Mazallan; Panama); Jordan, Cat. 

 Fish. N. A., Ic85, 72. 



Head, 3] (4) to U m); depth, 3 (3i) to 'dh (4^); eye in head, 31 to 4; 

 eye in snout, 1. 



This differs chiefly from 0. saurus in the deeper body and shorter 

 snout. The maxillary reaches beyond the eye. Its length is greater 

 than given by Giinther, it being contained U| times in the length of the 

 head. (Jtherwise Giinther's description applies very well to our speci- 

 mens. 



Of six specimens in our collection, four present the following measure- 

 men t.s : 



