FISHES FROM THE RHVILLAGIGEDO AKCHIPELAGO. 275 



anttrior vonuTino oiio or two in number, liluntish and conical; po8t«5rior 

 vomerino teeth rather bliiut. Anterior nasal tubes moderate. Dorsal low 

 anteriorly, bi'ginning in front of }jill-opening. 



Color lirownish-gray or pnrijlish, everywhere covered with small piiri)lish- 

 blaek spots wliieh are not conllucnt. In adults tlie spots an* arranj^cd in 

 roundish or rinj^jlike blotches on the sides; lins colored like body, without 

 dark edges. 



Two specimens, each about 3 feet long, taken at Clarion Island seem to 

 correspond in full with lignres given )>y Dr. Bleekcr of this common East 

 Indian species. 



8. Echidna nocturna (Cope). The smallest specimen measures 20 inches and is 



unspotted except for a few faint yellow markings near end of tail. The 

 largest example measures a yard in length. Teeth of lower jaw blunt, sub- 

 eqnal and biserial, in upper jaw larger and irregularly biserial. Directly 

 nndcr front of eye these teeth become regularly biserial, much smaller, and 

 more pointed; two regular rows of blunt vomerine teeth. Dorsal high, 

 beginning over gill-opening; eye 2 J in snout; head 3V in trunk; cleft of 

 mouth Sk in head; tail shorter than rest of body by distance from cleft of 

 mouth to gill-opening. Color seal brown, belly lighter, covered everywhere 

 with irregular spots and points of yellow, the largest about ^ inch across. 

 Lower jaw heavily mottled with yellow; no black margins to spots. Eight 

 specimens were collected among rocks in tide pools at Clarion and Socorro 

 islands. 



Family EXOCCETIDiE. 



9. Exocoetus volitaiis Linnteus. 



Halocii2)sc}us erohtns (Linnaeus). 



Numerous specimens taken from the Gannetsof the Revillagigedo Islands. 



10. Exonautes xenopterus (Gilbert). One large specimen from Clarion Island — 



another off Morro Hermoso, Lower California. 



Family MUGILIDiE. 



11. Mugil curema Cuvier it A'alencienues. An abundant species at Socorro Island. 



Four specimens. 



12. Chaenomugil proboscideu8(Giinther). Young and large individuals abundant 



at Socorro Island. 



Taken commonly in large tide pools witli Kuhlia arge. S(mie of the smaller 

 specimens have the pectorals and anal colorless ; others have a smaller mouth 

 and thinner lips, but tliese characters are not coordinated with any other 

 ditlerences. All probably l»elong to one species. 



Family HOLOCENTRID-a!. 



13. Holocentrua suborbitalis (Jill. Clarion Island and Socorro Island; twelve 



largo examples taken similar to others from Mazatlan. 



14. Myripristis clarionensis Gilbert. Five large examples from Clarion and 



Socorro islands, similar to original types. 



Family MULLID^. 



15. Upeueus deutatus Gill. 



Vpenens dentatuH Gill, I'roc. Ac. Nat. Sci. Phila. 1862, 256. 

 UpencuK xajithofjt ammtiH Gilbert, I'roc U. S. N. M. 1891, i553. 



A 6-inch 8pe<imen from Clarion Island. Teeth in bands anteriorlj-; uni- 



serial behind; scales 38. This specimen certainly belongs to U. dentatua. 



"We can not sejiarate U. xanthojiammna from it. 



