obtnsrly an-ulaled prriphery ; Outer lip undiil;r 

 sculpture. Lenirtli, '-' mill. 



.I/A//////- Or, |>ed.) 



F. TUBER i i . \ PUS, \Vat-on. |'l. 52, fi'j. !'. 



Soli, I, glossy while; whorl.- 7'-*, flattened, -lowly inCTMl 

 with spiral, ,-loiitly tuberciihted rib-, of which then ; on 



the body whorl, periphery annulated. lip variro-e, eoiitip 

 terior margin double. Length. 1'7. mill. 



OfOtMra />/., \\;,i Tnd 



Tlu- stylit'oi-in apex con>i>ts of ."I whoi'ls, tin- lio! t \\ o M .th. tin- 

 last with a half do/en spiral threads. 



Genua FOSSAKINA, Ad. and An: 

 F. pKTTi:iM)i, I)ra/icr. IM. -VJ, ji_M- s . 20, '21. 



Narrowly unibiliratcd, faintly spirally striatc, \\itli hardly vi.-ilili- 

 lon-'itudinal stria-, dark pur]ilisli black, with a few irn-irular white 

 inarkinjrs; whorls :J, convex, the last larire and rounded, iiinl.ilieal 

 region white; interior Lrreenish black, showinu' the external whit- 

 markings. Operculum thin, niany-whorlo.d. Diani. 4"2~> mill. 



Holxtrt Ton- a. T'i*nf 



Hutton remarks that this sjx-cies has the dentition and <>)>ei-en- 



luin of the Trochidfle but not of the I Jttorinida', and that it may 

 possibly be an Adeorbis. /Vm-. Linn. Xoc., N. S. IT., vii, (36. 



It has not the pearly naere of Troclms. 



/'. .SY/////SO///', Tenison Woods, is a synonym. 



F. IMCTA, A. Ad. PI. .VJ, fin-. 1(). 



Widely uinbilicated, spirally lirate, yellowish, irregularly macu- 

 lated with chestnut; whorls 4, convex, periphery rounded. 



I )iam. -'I mill. 



F. BRAZIERI, An-as. I>1. OL>, li-r. 17. 



Narrowly umbilicated, rather -olid, ash irrey, maculated with 

 purplish brown, irreirularly spirally ridded, two of the rid_<jes more 

 prominent, like carin;e, l<,!iL r itu<linally striated ; whorl- .', . with well- 



impresse.l suture. Diani. '!-."> mill. 



I ' 



F. ITNK i I.AI \, T-ni-oii Wood-. IM. 52, figB, 1 N . I 1 -'. 



Subumbilicated. solid, o]>a(|Ue. alui">t ear-shaped, \\ith rOOl 

 alternately larircr ami smallrr sj)iral ribs, mor- minute on the base; 



