THE NAUTILUS. 89 



Many species have the surface covered with fine divaricating lines, 

 but I believe there is none known in which there are a few strong 

 distant ridges, perhaps not exceeding half a dozen on the surface of 

 a shell six inches in length, and having otherwise the form and as- 

 pect of a giant 31. edulis. For this interesting species I propose the 

 name of M. Condoni in honor of its discoverer. 



I did not succeed in reaching the southern ])art of the State where 

 the enthusiastic lady collectors are upsetting all our previous notions 

 by finding new species (and big ones, too,) in a fauna which every- 

 body supposed had been well searched, to say nothing of advancing 

 many Lower Californian types many miles to the north. I am be- 

 ginning to believe that if the ladies set their minds to it we shall be 

 having a lot of new species from Kew England next. 



Prof. 0. B. Johnson of the State University at Seattle, Wash., 

 among other rarities, has recently dredged in the deep water of Pu- 

 get Sound near Port Orchard, a few splendid specimens of Crypto- 

 don or Axinus bisectus Conrad, originally described (as Venus bisec- 

 tus^ from the Miocene of Astoria. It is the giant of the genus, be- 

 ing over two inches in length, far surpassing in size any other liv- 

 ing species yet known. 



Wm. H. Dall. 



A CATALOGUE OF CONCHOLOGICAL ABBREVIATIONS. 



BY F. C. BAKER, ROCHESTER, N. Y. 



The following pages comprise an alphabetical catalogue of the 

 abbreviations in common use for writers on conchological subjects, 

 together with their full names and nationalities. 



While not exhaustive the names of all the more prominent 

 writers upon the subject are given. It is therefore hoped that the 

 list will prove useful to beginners and those more advanced in the 

 subject as well. 



A. 



Ad. A. Adams, Arthur. English. 



Ad. H. Adams, Henry. English. 



Ad. C. B. Adams, Charles B. American. 



Alb. Albers, Johann Christ. German. 



Aid. Alder, Joshua. English. 



