150 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [June 17, 



124. Trochus Sutherlandii, sp. nov. PL X. fig. 16, a, b. 

 Shell with a short pyramidal spire ; whirls rounded, five in num- 

 ber ; base convex, slightly umbilicated ; body-whirl with four or five 

 slight and unequally distant spiral carinations, crossed by numerous 

 faint and regular transverse lines ; aperture nearly circular. 



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

 Loc. Monastery of St. George. 



Dedicated to Dr. Sutherland, of the Sanitary Commission, Army 

 of the East. 



125. Trochus Lygonii, sp. nov. PL X. fig. 17, «, b. 



Shell depressedly conical, trochiform, volutions four, convex : suture 

 broad ; aperture subcircular ; umbilicus large and deep. 



Dimensions. — Axis -^-ths, diameter -]-§-ths of an inch. 



Loc. Monastery and Gorge of Iphigenia, collected by Captain 

 Cockburn ; also casts of two small specimens from the Redan, col- 

 lected by Major Cooke. 



Dedicated to Lieut.-Col. Charles Lygon Cocks, of the Grenadier 

 Guards. 



126. Littorina Monastica, sp. nov. PL X. fig. 9, a-c. 



Shell globular, imperforate ; spire small, obtuse ; volutions three, 

 spirally striated and crossed by faint transverse lines of growth ; 

 aperture large, nearly circular ; inner lip callous, covering part of the 

 body-whirl. 



Dimensions. — Axis -A-ths, diameter -ths of an inch. 



Loc. Monastery of St. George. 



127. Paludina achatinoides, Desh. Mem. Soc. Geol. France, 

 1838, p. 64. pi. 5. f. 6, 7. 



Loc. Kertch. In iron-ore. Collected by Dr. M'Pherson. 



128. Cerithium Cattley^e, sp. nov. PL X. fig. 12, a, b. 

 Shell turreted ; spire short ; whirls five, with about three rows of 



largely granulated bands ; aperture subquadrate ; columella recurved 

 and without a fold. 



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



Allied to C. Taitboutii, D'Orb. Voy. Horn. ; the tubercles are, 

 however, more distinct and fewer on each whirl. 



Loc. Monastery of St. George. 



There are also two specimens in the British Museum Collection, 

 presented by Mrs. Cattley, to whom this species is dedicated. 



129. Cerithium cochleare, sp. nov. PL X. fig. 10, a-c. 

 Shell elongate, turreted, regularly tapering ; whirls seven in num- 

 ber, with longitudinal ribs ; aperture subquadrate. 



Dimensions. — Axis ^ths, diameter p ths of an inch. 

 Loc. Gorge of Iphigenia (bed J). 



130. Cerithium truncatum, sp. nov. PL X. fig. 11, a, b. 

 Shell small, turreted, obtusely conical ; whirls four ; outline of the 



