TROCHUS. 325 



depths ranging from 3 to 105 f. ; Black Sea (Kutorga, 

 fide Middendorff ); Azores (Drouet). 



At Lulworth this little Trochus enters the lobster- 

 pots, along with T. cinerarius var. conica, Buccinum un- 

 datum, Nassa reticulata, N. incrassata, and Murex eri- 

 naceus — all of them apparently being attracted by the 

 bait, which consists of soft crabs or pieces of fish. It is 

 therefore highly probable that the Trochi are sarcopha- 

 gous. It may turn out that this so-called species is 

 only a variety of T. striatus, owing to a difference of 

 habitat — although the young and fry of each are distin- 

 guishable, and exhibit the same relative characters as 

 the adult. 



The present species is the T. conulus of Da Costa (but 

 not of Linne), T. exiguus of Pulteney, T. crenulatus of 

 Brocchi (not of Lamarck) , T. pyramidatus of the last 

 named author, and T. Matonii of Payraudeau, 



13. T. millegra'nus*, Philippi. 



T. milkgranus, Phil. Moll. Sic. i. p. 183, t x. f. 25 ; F. & H. p. 502. 

 pi. lxvi f. 9, 10. 



Body yellowish-white, streaked or spotted with purplish- 

 brown, and sometimes faintly tinged with green, covered all 

 over with short prickly points, so as to appear pustulated: 

 mantle-lappets large and expanded : head wrinkled, finely 

 scalloped at its edges ; veil small, bilobed, and serrated : ten- 

 tacles filiform, long and slender, with blunt tips, marked 

 lengthwise with three purplish-brown lines, one in front and 

 another on each side : eyes large, on the underside of whitish 

 tubercles at the external bases of the tentacles: foot thick, 

 oblong, truncated, slightly angulated at the corners in front, 

 and rounded behind ; the upper part is flat and edged with a 

 serrated ridge, the operculum resting on the posterior ex- 

 tremity of this level space ; sole pale lemoncolour : appendages 

 3 on each side of the foot, issuing from beneath the top 



* Covered with numerous granules. 



