(?) SIPHO HIRSUTUS. 201 



Trophon truncatus, var. Harmeri, A. Bell. Plate XXV, fig. 13. 



1915. Trophon Harmeri, A. Bell, Geol. Mag. [6], vol. ii, p. 167. 



Varietal Characters. — Differs from the type in size and in having three distinct 

 but inconspicnous spiral ridges on the lower whorls. 



Dimensions. — L. 12 mm. B. 6 mm. 



Distribution. — JSTot known living. 



Fossil : Cranstal Point, Isle of Man. 



BemarJrs. — The little shell figured under this name was found by Mr. Bell 

 among some fossils from the Manx drift sent to him by the Rev. S. N. Harrison. 

 It belongs to the T. truncatus group, but differs in its transverse sculpture. It 

 is intermediate in size between the type form of that species as given by Jeffreys 

 and specimens from the March Gravels figured by Wood as T. Banrfjius (Mon. 

 Crag Moll., 1st SuppL, pi. iii, fig. 11). None of the latter in my collection are 

 spirally ornamented, though Forbes and Hanley state that in T. clathratus a few 

 obsolete revolving ridges may occasionally be traced. The present variety 

 approaches the shell referred by me in the first part of this Memoir (p. 131, PI. 

 XII, fig. 28), but I now think in error, to Troplion Fahricii. It has been already 

 described by Mr. Bell in a paper sul^mitted to the Isle of Man Natural History 

 Society which has not yet appeared in print. 



(?) Sipho hirsutus (Jeffreys). Plate XXY, fig. 10. 



1883. Fusus hirsutus, Jeffreys, Proc. Zool. Soc. London, p. 396, pi. xliv, fig. 7. 



1887. Neptunea {Sipho) hirsvta, Kobelt, Icon, sclialentrag. eiirop. Meeresconcli., vol. i, p. 88, pi. xvi, 



figs. 2, 3. 

 1912. Sijiho hirs2(tus, Dautzenberg et Fischer, Camp. Scient. Pr. Monaco, vol. xxxvii (Mollusques) , 



p. 90, pi. iii, figs. 10, 11. 



Specific Cliarncters. — Shell turreted, fairly solid; whorls — 8, tumid, gradually 

 diminishing upwards, the last two-thirds the total length, excavated below; in the 

 recent state opaque and dull, chalky white under the epidermis ; ornamented by 

 numerous fine spiral ridges, about fifty on the body-whorl, with minute closely- 

 set strige in the lines of growth ; epidermis in the recent shell rough and hispid, 

 thickly clothed with short bristly hairs on the spiral ridges ; apex blunt ; suture 

 deep, channelled ; mouth pyriform, inflected above ; canal fairly wide and open, 

 turning sharply to the left ; outer lip thin, curved ; inner lip forming a delicate 

 film on the pillar ; pillar flexuous. 



Dime7isions. — L. 45 — 50 mm. B. 20 — 22 mm. 



Distribution. — Recent : Faroes to Spitzbergen. 



Fossil : Butleyan Crag : Butley (?). 



26 



