5^07. 1 NATURAL SCIENCES OF PHILADELPHIA. 461 



NOTES ON LANCELETS AND LAMPREYS. 



BY HENRY W. FOWLER. 



The species listed below are all contained in the collection of The 

 Academy of Natural Sciences of Philadelphia. 



BRANCHIOSTOMID^. 

 Branchiostoma lanceolatum (Pallas). 



Mediterranean (Dr. H. E. Evarts); Bay of Naples (Dr. Benjamin 

 Sharp, Dr. H. C. Chapman) ; Italy (Bonaparte Coll., No. ^). 



Branchiostoma caribaeum Sundevall. 



Off Vieques, Porto Rico (U. S. F. C). 

 Branchiostoma californiensis Andrews. 



Los Angeles Bay, Cal. (W. N. Lockington). 



Epigonichthys leucayanum (Andrews). 



Entrance to Castle Harbor, Bermuda Islands (A. G. Gulick). 



EPT ATRBTIDuiE . 



Polistotrema StOUtii (Lockington). 



Pacific Groove on Monterey Bay, Cal. (Dr. Harold Heath). 



Gill-openings 11 on both sides in 2 examples, 12 on both sides in 3, 

 and 12 on the right side and 3 on the left also in 3. 

 Polistotrema polytrema (Girard). 



Chili (Dr. H. C. Chapman). 

 Eptatretus burgeri (Girard). 



Off Misaki, Japan (D. S. Jordan and J. 0. Snyder). 



MYXINID^. 

 Myxine glutinosa Linnseus. 



Lat. 39° 55' 31" N., Long. 70° 39' N., and Bar Harbor, Maine (Dr. 

 H. C. Chapman). 



PETROMYZONID^. 



OCEANOMYZON gen. nov. 



Type OecdHomyzon wilsoni sp. nov. 



Supraoral lamina not especially contracted, its 2 converging teeth 

 well separated and distinct. Infraoral lamina crescentiform and 



