1885.] NATURAL SCIENCES OF PHILADELPHIA. 69 



by a thin, high, transverse crest ; supraocular with a short high 

 crest, extending from above front of eye back to posterior edge 

 of orbit, thence extending outward parallel with the transverse 

 crest, leaving a deep groove between them ; bony projections 

 before and behind e}^e prominent. Vert. 12+13 (dormitator)', 

 lower pharyngeals triangular, with slender teeth. 



a. Scales large, 55 in a longitudinal series ; 28 scales on median 

 line between occiput and front of spinous dorsal. Body 

 robust ; depth 4 in length ; head 2f. D. VI-1, 9 ; A. 1-10 ; 

 crests on skull very high. Lateralis. 1. 



aa. Scales moderate, 57 to 66 in longitudinal series ; head 3 to 3^ 

 in length ; depth 5 to 6. 

 b. Scales in median line from occiput to front of spinous dorsal 

 26 ; head 3^ in length ; transverse frontal crest not con- 

 tinuous. D. VI-1, 9 ; A. I— 10 ; 57 to 60 scales in a longi- 

 tudinal series. Maculatus. 2. 

 bb. Scales on median line from occiput to spinous dorsal 35 ; 

 transverse frontal crest continuous, 

 c. Scales medium, 57 to 60 in a longitudinal series; head 3£ 

 in length; depth 5^. D. VI-1, 9; A. 1-9; crests on 

 skull moderate. Dormitator. 3. 

 cc. Scales smaller, 66 in a longitudinal series ; depth 6 in 

 length ; head 3. D. VI-1, 10. Longiceps. 4. 



1. Gcbiomorus lateralis. 



Philypnus lateralis Gill, Proc. Acad. Nat. Sci. Phila., 1860, 123 (Cape 

 San Lucas); Jordan & Gilbert, Proc. U. S. Nat. Mus., 1881, 232 (West 

 Coast Mexico); Jordan & Gilbert, Proc. TJ. S. Nat. Mus., 1882, 368 

 (Cape San Lucas); Jordan & Gilbert, Proc. U. S. Nat. Mus., 1882, 

 372 (Colima); Jordan & Gilbert, Proc. U. S. Nat. Mus., 1882, 377 

 (Panama); Jordan & Gilbert, Proc. U. S. Nat. Mus., 1882, 380 (San 

 Jose). 



Eleotris lateralis Giinther, iii, 122, 1861 (Cape San Lucas). 



Habitat. — Pacific Coast of America, from San Jose to Panama. 



This species represents on the Pacific Coast the G. dormitator 

 of the Atlantic. It is readily distinguished by its shorter body, 

 larger scales, and by the greater development of its cranial 

 crests. 



