SHORE FISHES OF GALAPAGOS ISLANDS 417 



Range. Intertropical. 



This is the most abundant tide-pool fish in the Galapagos Islands. We 

 have specimens from Albemarle, Charles, Narboro and Seymour. 

 Equally abundant at Cocos and Clipperton islands, at the latter island 

 taken only in the lagoon where it was the only species. Common at 

 Socorro and Clarion islands of the Revillagigedo Archipelago. 



We have compared a considerable series of Clipperton Island speci- 

 mens of M. arundelii (Garman), with specimens taken near the type 

 locality of M. separator, and are unable to find any specific differences 

 though they show greater variation from the type than do any others 

 we have examined. Carman's specimen possessed 7 spines in the first 

 dorsal but this number is merely a variation not recorded in specimens 

 from any other locality. Of the 8 specimens from Clipperton Island 

 which are in the collection, 2 have 7 spines in the first dorsal and 6 

 have the usual number of 6. The variations in the series from Clip- 

 perton Island is as follows: D. VI or VII-I, 9 or 10; A. I, 8 or 9. 

 Specimens from Santa Lucia Island, West Indies, give the following 

 variations : D. VI I, 8 or 9 ; A. I, 7 or 8. 



Family MALACANTHIDJE. 



161. CAULOLATILUS PRINCEPS (Jenyns). 



Latilus princeps JENYNS, Zool. Beagle, Fishes, 52, pi. n, 1842, Chatham 



Island. 

 Caulolatilus princeps, JORDAN & BOLLMAN, Proc. U. S. Nat. Mus. 1889, 182 



(Charles and Albemarle islands). JORDAN & EVERMANN, Fishes North 



and Mid. Amer., in, 2276, 1898. 



Range. California coast from Monterey southward to Cape San 

 Lucas, Lower California ; Galapagos Archipelago. 



Common at the Galapagos Archipelago, where known from Chat- 

 ham, Charles and Albemarle. Not yet known from localities inter- 

 mediate between Cape San Lucas and the Galapagos. 



Family DACTYLOSCOPIDJE. 



162. MYXODAGNUS OPERCULARIS Gill. 



Myxodagnus opercularis GILL, Proc. Acad. Nat. Sci. Phila. 1861, 270, Cape 

 San Lucas, Lower California. JORDAN & EVERMANN, Fishes North and 

 Mid. Amer., in, 2305, 1898. 



Range. Cape San Lucas, Lower California ; San Luis Gonzales 

 Bay in the Gulf of California ; Albemarle Island, Galapagos Archi- 

 pelago. 



Six specimens secured at Turtle Point, Albemarle Island, the longest 

 43 mm. long. In coloration they are much darker than described by 



