390 TRANSACTIONS OF THE CANADIAN INSTITUTE. [Vou. VIII. 
F.S., with that of the Egyptian shell given in Geol. Mag., 1898, Pl. XIX, 
F. 2. The name may stand inlistsas Rostelaria (Orthaulax or Hipochrenes) 
inornata Gab. The form was probably an eocene and pre-eocene type, 
which migrated from Europe and Africa to the Caribean area, where it 
became extinct in miocene times. 
Fusus henekenii Sow. This is one of the many species to which my 
remarks on the subject of nomenclature, &c., are applicable. The 
cabinet naturalist who maintains the identity of Asaphis rugosa and A. 
deflorata,and who would nevertheless regard Sanguinolaria tahettensts as 
a good species could never admit that F. Aaztensis was the same species 
as F. henekent. Fortunately Gabb saw and admitted the identity, and 
thereby brought to light the fact that this is another of the species which 
having extinct representatives in the Caribean miocene has also living 
representatives in the Pacific (7. dupetithouarst) and in the Caribean 
(F. distans). See Gabb, Costarican Fossils, Journ. Acad., N.S Phil., 
1878, page 350. It may also be noted that many species of animals 
and plants have two forms, each of which is more different from the 
other than other distinct species are. Fusus distansand F. henekenti are 
examples of this fact. 
Pyrula consors Sow. Gabb thought that this species found in the 
miocene, and recorded by him under the name of P. melongena (in this 
following C. Moore) was conspecific with the Pacific P. pyrula Brod. I 
left it in as P. melongena, though I had doubt on the subject. Dall 
decides that they are distinct, and in fact this species is in the same 
predicament as Chama antiquata, having a Pacific living representative 
(P. patula) and a living West Indian representative (P. melongena) besides 
fossil representatives in the miocene of Europe. 
Purpura (Cuma) woodit Dall. This is the Cuma tectum of Gabb and 
myself. Dall’s remarks on it seem to me very apposite and to be 
applicable more or less to other species found in the Caribean miocene, 
so that I quote them here. “The small distribution of C. tectum would 
harmonize with the hypothesis that the group had barely reached the 
Pacific from a miocene Antillean centre of development when the com- 
munication between the two seas was cut off, an event accompanied by 
geological changes in the Antilles which exterminated the parent stock.” 
(Florida Fossils, Wagner Inst., Part I, page 155). Most of the species 
assigned to the section Cuma are merely varieties of C. tectum. The 
species is a purpura, and to make it into a genus would logically involve 
the making of a genus for nearly every species of Purpura. 
