386 PKOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



ACIPENSERID^. 

 Genus ACIPENSEE Linnaeus. 



106. Acipeuser sturio Linn. — Sturgeon. 



A large skin found in the harbor near Cape Lookout. 



CEPHALOjPTERID^. 

 Genus OEEATOPTEEA MliUer & Henle. 



107. Ceratoptera vampirus (]\Iitcli.) Gill. — Devil-fisli. 



Fishermen state that they are occasionally found in the harbor. 



MYLIOBATID^ 

 Genus AETOBATIS MiiUer & Henle. 



108. Aetobatis uariuari Miill. &. Honlc. 

 One large specimen seen. 



Genus MYLIOBATIiS Dum^rU. 



109. Myliobatis fremenvillei (Les.) Storei-. 



Tail of one specimen observed. 



DASYBATID^. 



(lrygonid<e GiW, op. cit.) 



Genus DASYBATIS Eafinesque (fide Gill). 



(Triif/on Gill, oj). cit.) 



110. Dasybatis centrurus (Mitch.) Gill, MSS. — Sting Ray ; Stingaree. 

 Very common. 



Genus PTEEOPLATEA Milller & Henle. 



111. ? Pteroplatea maclura (Le Sueiir) M. & Il.—Skutc. 



Several specimens about one foot long, the young of some broad specie^s. 

 They do not answer Le Sueur's account of the present species, and there 

 is no trace of a caudal spine, which on a Sting Eay of the same size is 

 fully developed. If not the young of Pteroplatea, they will constitute a 

 now genus. 



The following are the characters shown by our specimens : 



Disk very broad and short, its width nearly twice its length without 



the tail; tail short, slender and small, its length about one-third that of 



the disk; a dermal fold above and below; whole disk and tail covered 



with smooth skin, without spine or roughness of any kind; snout pro- 



