THE >AUTrLUS. 105 



(^Atlantic and Gulf coast species.) 



12. F. Listeri Orb. Florida Keys. 



A strongly latticed species, related to the F. grco'a of the 

 Mediterranean Sea. 



13. F. jiuviana Dall. Florida Straits, 76-100 fms. 



14. F. alternata Say. Chesapeake Bay, southward. 



Dead specimens have been collected at Cape May, X. J. by 

 Prof. C. LeRoy Wheeler, but the species is not found there 

 living. 



15. F. Tanneri Verrill. OffDelaware Bay to Hattera.s, in 104-142 



fms. 



16. F. minuta Lam. Turtle Harbor, Fla. 



According to Deshayes, this is not the minuta of Lamarck ; We 



believe, never-the-less that it is. If not, however, it will be 



called F. granulata Anton. It is often called by Reeve's 



later name, geimmdata. 



Several other small species, allied to minuta will probably be 



found in Florida, such as F. variegata Sowb., F. arcuata Sowb., etc. 



( JVest coast species.) 



17. F. aspera Eschscholtz. Sitka to Monterey. 

 The common AVest Coast form. 



18. F. saturnalis Carpenter. Santa Barbara and San Diego, Cal. 

 This has been known universally as " Glyphis densiclathrata 



Reeve," but I am informed by Dr. Dall and Dr. Stearns 

 that Reeve's shell is a young F. aspera. 



(Fossil species.) 



19. F. redimicula Say. Miocene. Yorktown and James River, 



Va. ; Patuxunt River, Md. 

 Allied to F. alternata, but with far finer sculpture, and the 

 hole nearly round. F. catilliformis Rodgers (Trans. Amer. 

 Philos. Soc. n. ser. vi, pi. 26, f. 4, 1839) seems to be a syn- 

 onym. 



20. F. alticostata Conrad. Miocene. St. Mary's, Md. ; James 



river, Va. (See Foss. Sh. Med. Tert. Form. p. 28, pi. 44, f. 



19.) 

 The type is in the Acad, N. S. Phil. coll. Typically quite dis- 

 tinct from redimicula, but transition forms collected by Mr. 

 Johnson in Va., seem to unite the two. 



