326 
MOLLUSCA. 
F. propinquus, Alder. 
Bantry, Mr. Jeffreys. 
Genus Pleurotoma. 
P. Boothii, Smith (sp.). Wern. Mem. viii. part 1. 
A specimen has been obtained at Portmarnock by Mr. Warren. 
P. turricula, Mont. 
Of general occurrence. 
P. costata, Penn. 
East, West, and South of Ireland. 
P. septangular is, Mont. 
Generally distributed. 
P. attenuata , Mont. 
General, but not abundant. 
P. nebula, Mont. 
North, East, and South of Ireland. 
P. rufa, Mont. 
Shell fusiform, turretted, with eight volutions ; eleven ribs (on body 
whorl), with coarse deep spiral striae. 
Length 7 lines; breadth, just above aperture, 2^ lines ; volutions very 
slightly ventricose, rather flattened- at top, but less so than in .P. 
turricula ; ribs strong and coarse, “ not continuous from whorl to whorl ; ” 
coarse cut striae across ribs and furrows ; aperture crescentic ; outer lip 
thin and in form of a bow ; pillar-lip somewhat hollowed ; canal very 
short. 
Colour uniform dirty brown. 
This species, coarse in form and sculpture and plain in colour, closely 
approximates Pleur. brachy stoma, Philippi, Enum. Moll. Siciliae, vol. ii. p. 
169, pi. 26, f. 10 ; from which I could not regard it as distinct, but for a 
single character possessed by that species in raised spiral striae. These 
are apparent in the profile of the shell as figured by Philippi ; they are 
much more numerous too than the deep striae of Pleur. Ulidiana. 
Three specimens of this shell were dredged from a depth of about 8 to 
10 fathoms by Mr. Hyndman and myself, in Oct., 1831, in Strangford 
Lough, County Down. 
P. linearis, Mont. 
Generally distributed. 
P. purpurea, Mont. 
Of general occurrence. 
P. gracilis, Mont. 
Portmarnock and Bray, rare. 
P. sinuosa, Mont. 
On the East coast, according to Turton. 
