4 



Bulletin 36 



350 



Smithsonian Institution. — P. P. C, Montreal, Feb. 22, 1866." 



The "college in New York State" was Cornell University 

 where the collection has remained since its purchase, referred to 

 in Carpenter's note. The finding of the two types offers occas- 

 ion for their illustration inasmuch as they have not heretofore 

 been figured. The species described as new were : 



1 . Turritella Jewettii, 



2. Bittium armillatum — the type is stated by Bartsch to be 

 in the U. S. N. M., Cat. No. 15653 and is figured by him in 

 Proc. U. S. N. Mus. , vol. 40, 191 1, pi. 52, fig. 6. 



3. Opalia (f crenatoides, var.) insculpta — type C. U. M. Cat. 

 No. 4950. 



4. Trophon tenuisculptus — type; C. U. M. Cat. No. 4951. 



5. Pisania fortis. 



Dentiscala insculpta (Carpenter) 1866. PI. 1. Figs. 10, 11. 



Opalia (f crenatoides var.) insculpta Carpenter, Rep. Brit. 

 Asso. Ad. Sci. for 1863, 1864, P- 660 ; Ann - Mag. Nat. Hist. 

 1866, 3rdser., vol. XVII, p. 277. Reprint, Smith Misc. Coll. 

 1872, 252, p. 324. 



Dentiscala insculpta Dall, Proc. U. S. Nat. Mus. 1917, vol. 



53, P- 473- 



Remarks 1863. "Like the C. S. L. form and crenata, but 

 ribs closer, without spiral sculpture, sutural holes behind the basal 

 rib." 



Original description. — il O. testa O. crenatoidei simili ; sed 

 costis radiantibus pluribus, xiii, — xvi., in spira validis ; anfr. 

 ult. obsoletis ; sculptura spirali nulla ; punctis suturalibus minus 

 impressis, circa fasciam basalem laevem postice, non antice con- 

 tinuis. 



Hab. Sta. Barbara, Pleistocene, 1 sp. (Jewett). 



Very closely related to O. crenatoides, now living at Cape St. 

 Lucas, and, with it, to the Portuguese O. crenata. It is quite 

 possible that the three forms had a common origin." 



The exterior of the shell of this type has been worn away 

 except in the sutural region, hence the exact character of the 

 longitudinal ribs cannot be described, however prominent impres- 

 sions of each reveal fourteen ribs on the whorls. 



