PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 43 



are recorded : one, tbe type of the original description, one foot long, 

 collected on the coast of Brazil by M. Gay, and probably now iu the 

 Museum iu Paris; a second iu the British Museum, a stufled specimeu, 

 purporting to have beeu collected in the West Indies. Of Poey's G. 

 cyanops the National Museum possesses a tine specimeu (Cat. No. 4750), 

 15 inches long, collected and presented by Professor Poey. 



The Peusacola specimen, now under consideration, is two feet and 

 three inches long, weighing nine pounds and one-quarter. Its color has 

 faded, but a yellow blotch is still visible under the eye, similar to that 

 mentioned iu C. chrysops. A dark blotch is visible in and above the 

 axilla of the pectoral. 



The following diagnosis is believed to characterize the peculiarities 

 of the new form. It is accompanied by a table showing the detailed 

 measurements of C. cyanops and C. microps^ and another showing the 

 relations of C. chrysops as far as they can be gleaned from the published 

 descriptions. 



Caulclatilus microps, i^jk nor., Goode and Bean. 



Diagnosis. — Height of body contained slightly more than three anJ 

 one-half times iu its leugth, its width seveu times, the species being 

 higher and more robust than C chrysops and C. cyanops. Leugth of head 

 equal to height of body, being in same proportion to total length as iu 

 C. cyanops (though less in proportion to height of body), and longer pro- 

 l^ertioually than in C. chrysops. Width of interorbital area equal to 

 half the leugth of snout, instead of four-tifths, as iu 6'. cyanops. Leugth 

 of snout greater than that of maxillary. Diameter of eye contained six 

 times in leugth of head, instead of four times, as iu C. chrysops, and three 

 and three-fourths times, as in C. cyanops. Nostrils midway from eye tc* 

 snout, and separated by a distance equal to diameter of eye. Deutitiou 

 much as in C. cyanops. Fins all shorter than iu ('. cyanops, the anal 

 and soft dorsal two-thirds as high. Caudal fin slightly emarginate. 

 Pectoral not extending to first ray of anal, as in the other species, less 

 than one-fourth of total leugth. Scales in lateral line 120, in transverse 

 line 48, being smaller and more numerous than in C. cyanops. 



Radial Formula. — D. VII, 25 ; A. I, 23 ; C. 17 ; P. I, IG ; ^'. I, 5, instead 

 of D. VII, 24 ; A. I, 22 ; C. VJ ; P. 1, 15 ; V. I, 5, as in C. cyanops, or D, 

 VIII, 24; A. II, 22; C. 17; P. 17 ; V. I, 5, as in C. chrysops. 



