t^i fishp:s of sinai.oa. 423 



length of its pectoral fins as compared with Mugil curema. 

 The Crustacean is also common and characteristic of the 

 same species at Panama. 



Head 3% to 4; depth 4 to 4^ ; D. IV-8; A. Ill, 9: 

 scales 38-13; eve ^% in head; snout 4; maxillary 4. 



Body a little slenderer and more compressed than in 

 Mugil curema, the back considerably more arched, the 

 profile evenly curved from tip of snout to soft dorsal. 

 Eye moderate, with a large adipose eyelid. Head broad 

 and round above ; interorbital width 2-f in head. Teeth 

 very small, perceptible with a lens. Tip of lower jaw 

 forming about a right angle. Space between dentaries 

 club-shaped, very much larger than in Mugil curema, the 

 subopercles barely touching below. First dorsal inserted 

 above middle of body nearly over tip of ventral spine. 

 Second dorsal moderate; its edge incised. Upper lobe 

 of caudal a little longer than lower, as long as head. 

 Anal rather high. Ventral inserted before middle of 

 pectorals. Pectoral very much longer and more pointed 

 than in curema, 1 % in head. 



Soft dorsal and anal covered with small scales. 



Color much as in curema, rather greener above, sides 

 silvery, with less trace of longitudinal streaks. Fins pale; 

 base of pectoral with a round black spot. Upper edge 

 of pectoral and end of caudal dusky. No golden on head. 

 Iris with a little brown, green above eye. 



Types, Nos. 1695, 2890, 2954, L. S. Jr. Univ. Mus. 



68. Mugil setosus Gilbert. 



Four young specimens taken in a rock pool. The pec- 

 toral is as long as in Mugil hospes, reaching the first dorsal, 

 and there is a distinct dark blue spot at its base. Color 

 bluish above, much as in Mugil curema; much darker than 

 in the original types of the species, with which our speci- 



