1857.] BAILY FOSSILS FROM THE CRIMEA. 149 



be referred to this genus, too imperfect for description, were col- 

 lected by Major Cooke from the Redan. 



115. Trochus Corderianus, D'Orb. Voy. Horn. 



Very abundant at the Quarantine Harbour, sixteen specimens 

 having been obtained from that locality, the deposit in which 

 they were imbedded being a fine-grained compact yellowish marl, 

 particularly rich in specimens of this genus : they are mostly in 

 beautiful preservation, the shells having become crystallized. 



116. Trochus Fenonianus, D'Orb. Voy. Horn. 

 Loc. Quarantine Harbour. 



117. Trochus Pageanus, D'Orb. Voy. Horn. 

 Loc. Quarantine Harbour. 



118. Trochus Murchisoni, sp. nov. PI. X. fig. 13. 



Shell obtusely conical, elevated, having five or six volutions ; 

 slightly convex, with about three transverse somewhat granular 

 ridges on each whirl ; base convex, imperforate ; aperture suborbi- 

 cular. 



Dimensions. — Axis 1-^-ths, diameter y^ths of an inch. 



Loc. Quarantine Harbour. 



Dedicated to Sir Roderick I. Murchison, Director- General of the 

 Geological Society of Great Britain. 



119. Trochus Andersoni, sp. nov. PI. X. fig. 14, a, b. 



Shell conical, with flat sides and elevated spire ; volutions six, 

 ornamented with about five irregular elevated ridges ; base nearly 

 flat ; columella suboblique ; aperture trapeziform. 



Dimensions. — Axis -j^ths, diameter y^ths of an inch. 



Allied to T. Voronzoffi and T. Pageanus, D'Orb. Voy. Horn., but 

 differs from the latter species by its smaller diameter, and in the 

 ridges not being granulated. 



Loc. Monastery of St. George. 



Dedicated to Major Anderson, Royal Artillery. 



120. Trochus Beaumontii, D'Orb. in Voy. Horn. 

 Loc. Monastery of St. George. 



. 21. Trochus Blainvillei, D'Orb. in Voy. Horn. 

 Cast of the interior. 

 Loc. Gorge of Iphigenia. 



122. Trochus Hommarei, D'Orb. in Voy. Horn. 



Loc. A fine and perfect specimen from the Quarantine Harbour 

 collected by Capt. Cockburn, and a less perfect one from Sevastopol 

 collected by Major Anderson, R.A. 



123. Trochus pulchellus, sp. nov. PI. X. fig. 15, a, b„ c. 

 Shell very small, with an acutely elevated spire ; whirls five, orna- 

 mented with three sharp much- elevated and crenulated transverse 

 ridges ; base convex ; aperture suborbicular ; umbilicus small. 



Dimensions. — Axis y^ths, diameter y%ths of an inch. 

 Loc, Quarantine Harbour. 



