356 Mr. A. Bell on the Crag-Fauna. 



strong ridge at the base ; canal turned back. Long, 

 -j^ inch, lat. -^ inch. C. C. Gedgrave. R. C. Wald- 

 ringj&eld. 

 *Xassa densicostata, A. Bell, n. sp. The only specimen I have 

 is, unfortunately, broken, wanting three or four of the 

 upper whorls and part of the outer lip. It has some re- 

 semblance to A^. prismatica, Broc, but is longer and 

 slenderer. The costse are slightly "oblique, closely crowded, 

 especially in the upper whorls. The whorls are covered 

 with strige, moderately elevated ; pillar-lip having a fold 

 at the base. Long, about f inch. 



Buccinojjsis Dalei, Sow., var. sinistrorsa. R. C, near Wood- 

 bridge. 

 ^Ranella anglica^ A. Bell, n. sp. Shell small ; whorls 3-4 

 (apex wanting), convex, with coarse elevated ridges on the 

 bottom whorl crossing the periodic growths (which are very 

 distinct) and, extending to the mouth, becoming very marked 

 at the base ; mouth angulated above, outer lip spreading 

 towards the base, where it is sharply angulated by one of 

 the ridges ; pillar reflected ; canal rather open ; umbilical 

 chink small. Long. -—■ inch. R. C. Waldringfleld. 



Purpura lajnllusy var. incrassata^ S., closely resembles P. sep- 

 tentrionaUsj Reeve {Hah. Sitka Sound, &c.), and is pro- 

 bably the same shell. 



Cassidaria hicatenata^ Sow. This shell is subject to con- 

 siderable variation. Immature shells have the outer lip 

 sloping inwards to the base, something like C. tyrrhena. 

 I have had an uncommon variety from Sutton, in which 

 the tubercles were almost absent, the shell narrow as com- 

 pared with the usual type, the mouth long, and outer lip 

 straighter. The Rev. Mr. Canham has a very fine example 

 of this variety in his collection. Should it be distinct, C. 

 Canhami would be a good name for the shell. 

 ^Columhella scripta, L. Figm^ed in Olivi, Zool. Adr. t. 5. 

 f. 1, 2, as Murex conulus. R. C. Walton-Naze, Wald- 

 ringfleld, and Shottisham Creek. 



sulcata, Sow. The long and short varieties figured by 



Mr. S. Wood are so constant and easily distinguishable, 

 even in immature specimens, that a separation into two 

 species would not be perhaps altogether unadvisable. The 

 short form is, as far as I have yet seen, a deep-water 

 shell, and is confined to the Red Crag. The longer form 

 I have seen in the Coralline. I would suggest the name 

 C. abbrevio.ta for the shorter shell. 



Defrancia histrix, Jan. C. C. Sutton. 

 ^Pleurotoma bicarinata, Couthouy, Bost. Journ. Nat. Hist. 



