46 MARSHALL: ON THE BRmSH SPECIES OF BUCCINUxM, I'USUS, ETC. 



short and broad l)ase, which imparts a conical outHnc in comparison 

 with the others. The two latter are also much larger shells, with a glossy 

 surface and compressed whorls. Canon Norman is also " inclined 

 to add as a wider variety " F. <f>'/irafu.<, Jeffr. ("'), but that again is 

 quite distinct from /'. propiwpmx or any of its varieties, all its affinities 

 (except size) being with F. mhini, Gray. 



Var. livrix, Marsh, n. var. — This is a small, delicate form, with a 

 light, silky, polished epidermis, and the whorls partially or entirely 

 without the usual spiral sculpture. It corresponds with F. (jranlis var. 

 (jiaher, but is still smoother than that variety, and comes from the same 

 British locality. 



As in the last three species, there is a broad as well as a slender 

 varietv, the result of depth and habitat. It flourishes best on the Dogger- 

 bank, where I have dredged it in comparative abundance and of large 

 size, the largest attaining 2|-in. by i-in. ; but on the edge of the 

 Doggerbank and in the Silver Pits, where the water is deeper, they 

 become smaller and narrower, like the Shetland form, although the 

 latter district produces large specimens also in places. Mr. Richard 

 Howse (") first noticed and figured the small deep-water form, but 

 mistakenly under the name of F. (jrariU>< rar., which he described 

 as " hispid, i^-in. by ^-in., with seven whorls " ; and if it merits a varietal 

 name that of rar. hncaei would be appropriate. Some of my Shetland 

 specimens do not exceed an inch in length by half that width. Searles 

 Wood records and figures a reversed specimen found by Mr. A. Bell 

 in the Red Crag (pi. 27, fig. 21). 



This is another instance in which Forbes and Hanley, Jeffreys, 

 and Sowerby are at variance as to the type form, and unfortunately the 

 author did not accompany his description with a figure. Gwyn Jeffreys' 

 figure, description, and dimensions belong to the Shetland and deep- 

 water form, while the other authors figure more southern examples as 

 the type ; and although Forbes and Hanley give the dimensions as 

 i|-in. by A-in. their figured specimen is 2i-in. by i-in. Captain Brown's 

 figures are not this, but the next species. 



F. JEFFREYSIANUS, Fisch. — Bristol Channel (Wotton) ! the Smalls 

 Lighthouse (Span) ! Milford Haven (Jordan) ; Tenby and Laugharne 

 ( Williams- Vaughan) ! Brixham in S. Devon, from trawlers ; and occa- 

 sionally cast ashore in Torbay by storms. It has been dredged on 

 the north coast of Spain (Locard, " Travailleur " Exp.), and I have a 

 young specimen dredged by the " Porcupine " off Cadiz in 386 f. 



(5) Ann. Mag. Nat. Hist., iSyg, p. 142. 



(6) "Notes on a Dredging Excursion off Dunbar," Ann. Mag. Nat. Hist., vol. xix, p. i6j, 



pi. 10, fig. s. 



