THE NAUTILU8. 11 



from points between Alaska and the Strait of Magellan, and 

 one, Oyathodonta cruziana, from Santa Cruz, West Indies. 



Prodrome of a revision of the Chrysodomoid whelks of 

 THE Boreal and Arctic regions. By W. H. Dall. (Proc. 

 Biol. Soc. Washington, pp. 7, 8, Jan, 25. 1916). An extended 

 and intricate subject is presented here in tabloid form. A few 

 changes affecting well-known American species may be noted. 



Chrysodomus dims becomes Searlesia dira (Rve. ). 



Chrysodomus or Sipho islandicus and related species belong to 

 the genus Colus. 



Chrysodomus kelseyi becomes Exilia kelseyi (Dall). 



Rediscovery of Pourtales' Haliotis. By John B. Hender- 

 son. (Proc. U. S. Nat. Mus. Vol. 48, 1915). In 1869 Count 

 Pourtales dredged a Haliotis in the Straits of Florida, which 

 was subsequently destroyed in the Chicago fire. It was de- 

 scribed from memory by Dr. Dall in 1881, as Haliotis pourtalesii. 

 In 1911 Mr. Henderson, dredging on the "Pourtales Plateau" 

 off Key West, in 90 fathoms, had the good fortune to secure 

 another specimen, which is described and figured in this paper. 

 It was first announced in The Nautilus, vol. 25, p. 81. As 

 Haliotis on the Eastern American coasts had become almost 

 mythical, this was one of the most interesting finds of recent 

 years in those waters. A species from the Galapagos, which Dr. 

 Dall had subsequently identified as H. pourtalesii, is renamed 

 Haliotis dalli Henderson. Both are figured. 



Three New Species of Anodontites from Brazil. By Wm. 

 B. Marshall. (Proc. U. S. Nat. Mus., vol. 49, Dec. 1915). A 

 3almonea, A. darochai are A. aurora are new species from Ceara, 

 Brazil. 



A list of Shells collected in Arizona, New Mexico, Texas 

 AND Oklahoma by Dr. E. C. Case. By Bryant Walker. 

 (Occ. Papers Mus. of Zool., Univ. of Michigan, No. 15. Dec, 

 1915). These lists record shells taken from stream debris in 

 many localities, often remote from places which have been 



