CYPREA. 123 
brown, with large paler spots on the back; base 
brownish black, dilated. 33. Spire obtuse. W. 
17. 20. 
C. arABicA. Ovate-oblong, inscribed with 
brown marking on a bluish or brownish-white 
ground, somewhat resembling Arabic letters ; 
dorsal streak simple; sides towards the base 
thickened, and marked with purplish-black spots ; 
base fiesh-coloured, with chestnut teeth; throat 
violet ; spire evident. 2. W. 16.3. 
C. nistri0. Oblong, or ovate-oblong, with 
a kind of brown network, enclosing pale polygonal 
markings; sides thickened, and somewhat tumid 
at the base, generally tinged with bloom-colour 
and spotted with black; spire evident. 2. W. 
16. 4. 
C. scurRA. Oblong, cylindraceous, with light- 
coloured pclygonal spots on a fulvous ground ; 
border yellowish, spotted with brown; base flat ; 
teeth brown. 2...1. W.17. 30. 
C. mus. Ovate, gibbous, whitish, mottled 
with cinereous; dorsal line white, edged with 
black spots, and generally with a large blotch of 
black adjoining the spire ; teeth maroon brown ; 
spire concealed. 1$...1. W. 17. 22. 
C. Tigris. Ovate-ventricose, turgid, bluish 
white, softening off to reddish toward the back, 
with numerous large black splotches and a yellow 
