1921] NATURAL SCIENCES OF PHILADELPHIA. 325 



Length 20.5, diam. 9.9 mm. 



The type is the largest of six specimens catalogued under no. 2928 



A. N. S. P. 



Scobinella magnifica (Gabb) Plate XVII, fig. 16. 



Cordiera magnifica Gabb, Trans. Amer. Philos. Soc, xv, 1873, p. 210. 



This beautiful species is much larger and more slender than S. 

 caelata Conrad, of the Vicksburg Oligocene, which it resembles in 

 sculpture. The columella has four plaits, which diminish downward 

 frorti the upper one, as in Mitra. 



Length 70.5, diam. 16.4, length of aperture 34.7 mm.; 12 whorls, 

 those of the embryonic shell being lost. 



Type is no. 2926 A. N. S. P. 



A Scohinella has been described from Mindi, Canal Zone, under 

 the name Euchilodon morierei Laville MS., by M. Cossmann.^* It 

 has a shorter anterior canal than either of the Santo Domingan 

 species, and differs in some details of sculpture, but it evidently 

 stands close to S. tristis. These species cannot belong to the genus 

 Eucheilodo?i, which, differs conspicuously by having a numerous series 

 of ten or twelve short subequal transverse folds on the collumella, 

 somewhat as in some Columbellas. In Scohinella the structure is 

 like Mitra. 



Scobinella tristis Pils. & Johns. PI. XVII. flis. 17, 18. 

 Proc. A. X. S. Phila. 1917, p. 158. 



Borsonia (Paraborsonia) varicosa (Sowerby) Plate XVI], flgs. 19, 20, 21. 

 Mitra varicosa Sowerby, Q. J. Geol. Soc. vi, 1849, p. 46. 

 Cordiera varicosa Sby., Gabb, Trans. Amer. Philos. Soc. xv. p. 210. 



A handsome, very elaborately sculptured species. The anal 



fasciole forms a strongly elevated band at the shoulder. This band 



is bilirate, the two cords tuberculate, the tuberles being connected 



across the interval. Below the shoulder there is a close sculpture 



of larger alternatiiiir with smaller spiral cords and threads crossed 



by close but very much interrupted axial threads, the intersections 



graniferous. Near the anterior end the axial sculpture disappears. 



Above the shoulder there are crowded, granose spirals. The rather 



small anal sinus is continued inward as a furrow. Below it are 



many sharp lirae within the lip. The columella has two strong 



plaits, the upper one larger and fiat-topped. The lower plait is 



about midway between the ends of the inner margin. In half- 



groAvn individuals there is a third distinct plait, and in one the weak 



'« Joiirn. de Conchyl., LXI, 1913, p. 34, pi. 3, figs. 6, 7. 



