THE SUBGENUS CYLINDER. 79 



to Ceylon^ Mauritius, the Philippines^ and New Caledonia. 

 Two species, or forms of one (C victorice (Reeve) and 

 complanatus (Sowb.)), occur in Australia; C. pyramidalis 

 (Lam.) is also a native of the same seas; C. racemosus 

 (Sowb.)j an unique form in my collection, is from the 

 Sandwich Isles ; C. lucidus (Mawe) from the west coast of 

 Central America; and a doubtful form, C. Dalli (Stearns), 

 recently described from a single specimen, is reported from 

 the Gulf of California. This shell, apparently, from the 

 figure, a variety of C. textile (L.), is especially interesting 

 as affording a western habitat for a species very universally 

 distributed in the east, but not known before to impinge 

 on American shores 



The locality in which these Molluscs are found, in 

 common with others of the family, is in fissures of rocks, 

 especially in coral-reefs, where they lead a predatory 

 existence, feeding on other MoUusca &c. 



After a very careful study of the Protean forms of the 

 Textile Cones, the forms would seem to come under five 

 heads, the first head having three divisions, I propose to 

 class them as follows : — 



I. Textilia. 



a. vera. 



b. abbates. 



c. pyramidalia. 



II. Eetiferi. 



III. LuciDi. 



IV. AuLici. 



a. crocati. 



b. episcopi. 



V. Aurei. 

 Of these the first and fourth, as might be expected, 



