RISSOA. 15 



by the impress of the spiral striae, although they correspond in 

 number and position : outer lip thin : inner lip slight, reflected 

 on the pillar ; there is no umbilical chink : operculum filmy, 

 with a short spire. L. 015. B. 0-085. 



Var. minima. Dwarf; spire very short. 



Habitat : Coralline zone, Guernsey (J. G. J.); Hel- 

 ford (Hockin) ; Exmouth (coll. Clark) ; Coquet and 

 Berwick Bay (Mennell); Cork Harbour (Wright); west 

 coast of Ireland (Hoskyns); Larne, co. Antrim (J.G.J.) ; 

 Skye and Hebrides (M f Andrew and others) ; Aberdeen- 

 shire coast (Dawson); Shetland (Barlee and J. G. J.). 

 The variety was found at Plymouth by Mr. Barlee. R. 

 cimico'ides inhabits the iEgean, 2-69 f. (Forbes) ; Dal- 

 matia (Brusina) ; Gulf of Lyons (Martin) ; Bohuslan, 

 50-80 f. (Martin) ; Bergen (Lilljeborg) ; upper Norway 

 (M ' Andrew) ; and Greenland (coll. M f Andrew). 



I have no doubt that this is the R. cimico'ides of Forbes, 

 having compared specimens so named by him in the 

 British Museum and Mr. M' Andrew's collection with the 

 original description of that species, as well as with the 

 Scotch specimens from which the description and figures 

 of R. sculpta in the ' British Mollusca ' were taken. The 

 R. sculpta of Philippi appears to have a more regularly 

 oval shape, the larger whorls are cross-barred ("cla- 

 thrati 9> ) , and the inside of the mouth is smooth. This 

 agrees with R. calatkus of Forbes and Hanley, except in 

 the latter having the throat crenated. Loven regarded 

 R. abyssicola as Philippics shell. Pasithea nigra of Tot- 

 ten, from Rhode Island, is allied to the present species. 



7. R. Jeffrey'si "*, Waller. 



B. Jeffrey^, Wall, in Ann. & Mag. N. H. s. 3. xiy. p. 136. 



Shell conic-oval, with a somewhat turreted outline, mode- 



* So named out of compliment to the author ot" the present work. 



