PURPURINA. 91 
8. PURPURINA ASPERA, Sp. nov. Plate I, figs. ll a,b; lle,d; lle. 
Description : 
Length of a well-grown specimen : . 26mm. 
Ratio of width to length ; : = fo > KOO: 
Length of body-whorl to entire shell : . 60: 100. 
Spiral angle : 10%. 
Shell ovate-conoidal ; spire rather more than Fe umeenitt of the entire length. 
Whorls seven in number, angular; posterior area sloping outwards, anterior area 
sloping inwards. Keels submedian, and coarsely crenulate where the longitu- 
dinals or costz cross over. Coste few but prominent, and well-continued through- 
out the body-whorl except in the neigbourhood of the columella. The spirals 
on the posterior area of the whorls are fine and numerous, those on the anterior 
area are few in number (about three on the whorls of the spire), coarse and wavy. 
The spirals in the base are thicker and much striated longitudinally. Shell 
substance very thick. 
Aperture subquadrate and rather restricted ; columella encrusted and strongly 
reflexed, so that the anterior canaliculation is very pronounced. Umbilical sht 
narrowed and long. 
Relations and Distribution.—This fine and characteristic Purpurine is, in many 
respects, widely removed from P. elaborata, and yet these two species are connected 
through the variety pagoda, and the numerous other varieties of P. bellona. Also, 
instead of the shallow anterior groove of that species, P. aspera is deeply canali- 
culate. 
These very coarsely ornamented forms are characteristic of the Sowerbyi-bed 
of Bradford Abbas, where P. aspera is moderately abundant. 
The specimen, Pl. I, fig. 2, is also from the Sowerbyi-bed of Bradford Abbas. 
It is an exceptional form, but I have not ventured to name it. 
9, PurpuRINA CALCAR, sp. nov. Plate IT, figs. 1 a, 0. 
Description : 
Length : Z : =) 9 mim. 
Ratio of width to jenaeh : ; « (80:2/100; 
Length of body-whorl to entire shell : = 60/2100: 
Spiral angle : - 2 a4 Care 
Shell conical. Whorls about six, very angular; posterior area slightly sloping 
outwards, anterior area slightly sloping inwards. Keels of the whorls of the spire 
