1857.] BAILY FOSSILS FROM THE CRIMEA. 147 



of Iphigenia in bed J of the section, associated with Astarte pul- 

 chella, &c. 



103. Solen?, sp. A single fragment of the posterior extremity of 

 an elongated straight shell apparently belonging to this genns. 



Loc. Quarantine Harbour. 



104. Potamomya Iphigenia, sp. uov. PI. IX. fig. 13, a-d. 

 Shell thick, elongated and compressed ; umbones nearly central ; 



one cardinal tooth in each valve. 



Dimensions. — Height ^th, breadth -|-Jths of an inch. 

 Three single valves showing the interiors. 

 Loc. Gorge of Iphigenia. 



105. Pholas Hommarei, D'Orb. Voy. Horn. pi. 4. f. 16-16. 



Loc. Monastery, and Gorge of Iphigenia; from bed P of the 

 section. 



Gasteropoda. Opisthobranchiata. 



106. Tornatella mInuta, sp. nov. PI. X. fig. 7, a 3 b. 



Shell small, cylindrical, smooth ; spire short, acute, with four or 

 five whirls ; aperture long and narrow, inner lip callous, covering part 

 of the body-whirl. 



Dimensions. — Axis 3%-ths, diameter -^th of an inch. 



Loc. Quarantine Harbour. 



107. Tornatella inflexa, sp. nov. PI. X. fig. 8, «, b. 



Shell cylindrical ; spire short, with three or four whirls ; aper- 

 ture long and narrow ; body-whirl inflexed or bent inwards at the 

 middle. 



Dimensions. — Axis h. breadth ^ths of an inch. 



This is a much larger species than the preceding, and differs in 

 being of less diameter in proportion to its size. 



Loc. Four specimens, all casts, were collected by Major Cooke, 

 from the Redan. 



PULMONIFERA. 



108. Helix Duboisii, sp. nov. PI. X. fig. 1, a, b. 



Shell subglobose, perforated, and finely striated, having five volu- 

 tions with an elevated conoidal spire ; margin reflected, partly cover- 

 ing the umbilicus. 



Dimensions. — Diameter y^ths, elevation -j^ths of an inch. 



This species occurs in considerable numbers, and was obtained 

 from a marly deposit (bed C of the section), of a bright-red colour, 

 at the Monastery of St. George, and of a yellow tinge from the 

 Gorge of Iphigenia. It was associated with "the two next following 

 species. 



It bears a considerable resemblance to the recent H. arbustorum, 

 but is smaller, and the spire not quite so elevated. 



Dedicated to M. Du Bois de Montpereux, to whom we are in- 

 debted for so full a description of the geology of that country, in his 

 great work on the Crimea and the Caucasian Provinces. 



l2 



