52 CALIFORNIA ACADEMY OF SCIENCES. 



3. Gobiomorus dormitor Lac^pede. 



ELeotris longiceps Giinther, Proc. Zool. Soc. Lond., 1864, 151 (Lake 



Nicaragua). 

 West Indian Fauna, East Coast of Central America and Surinam. 



The specimens in the Museum are from St. Thomas, Surinam, Barbadoes, 

 Fort de France, Martinique, St. Lucia, Hayti, and Lake Nicaragua. 



The largest specimen is a liead from Hayti, which meas- 

 ures 5^ inches from tip of lower jaw to end of opercle. 



The color in adult individuals varies from light brown to 

 blue black. The young somewhat like Gobiomorus lateralis 

 in general coloring; having profuse dark markings, the belly 

 plain; an interrupted black bar on middle of sides; no regu- 

 lar spot at base of tail. 



A specimen collected in Lake Nicaragua by Froebel is 

 presumably to be referred to Eleotris longiceps Giinther, but 

 no tangible differences can be detected between it and speci- 

 mens of Gobiomorus dormitor from other localities. 



A comparison of the species G. lateralis and G. dormitor 

 shows them to be very closely related. We append the 

 differences observed: 



lateralis. dormitor. 



Scales in median series uniformly, 52. Scales in median series, 55 — 57. 



In a cross series, 17. In a cross series, 18 — 22. 



Scales from nape to'first dorsal spine, Scales from nape to first dorsal spine, 



27. 27—34. 



Head in length, 2f— 3. Head in length, 3 -3|. 



Depth, 5—6. Depth, 5%— 6. 



Dorsal vi--10. Dorsal vi — 10. 



Anal 11. Anal 10. 



4. Gobiomorus maculatUS (Gtlnther) Ecuador. 



III. DORMITATOR Gill. 



5. Dormitator maculatus (Bloch). 



Eleotris latifrons Eichards. Voy. Sulph. Fishes 57, plate 35, figs. 

 4-5, 1837. Dormitator micropthalmies Gill, Proo. Acad. Nat. Sci. 

 Phila. 1863. 170. 



