54 



THE NAUTILUS. 



Hissoa violacea Desru. 



Piissoa simplex Phil. 



Manzonia costata Ad. 



Cingula semistriata Mont. 



Oingula contorta Jeffr. 



Cingula contorta f. major. 



Setia sp. ? 



Setia Benjamina Monterosato. 



Setia amabilis Mouterosato. Liv- 

 ing. 



Setia micrometrica Seguenza. 

 Living. 



Peringiella nitida Brus., var. 

 elongata Monterosato. Very 

 rare. 



Pi sinn a (=Hagenmulleria~) 

 punctnlutn Phil. = ? glabrata 

 Miihlf. 



Pisinna punctulum f. elongata. 

 Larger and more produced. 

 Very rare. 



Pisinna (?) seminulum Montero- 

 ato. This little known species 

 was found living in quantities 

 with P. punctulum. 



Zip'pora auriscalpium Liu. 



Rissoa sj). ? 



Rissoa sp. ? 



Eissoa sp. ? 



Hersilia Mediterranea Monteros- 

 ato. Extremely rare. 



Vermetus triqueter Bivona. 



Vermetus glomeratus Lin. 



Caecum subannulatum Folin. 



Truncatella Icevigata Risso. 



Skenea planorbis Fab. 



Homalogyra Fischeriana Mon- 

 terosato. A single specimen 

 found alive, of this extremely 

 minute but beautiful little 

 species. A littoral species. 



Adeorbis subcarinatus Mont. 



Crepidula unguiformis Lin. In 

 the interior of a large Turbo. 



Capulus hungaricus L. Young. 



Eingicula auriculata Menard. 



Atftralium rugosum Lin. 



Phasianella (Kutropia) pulla 

 Lin. 



Cyclostrema nitens Phil. Rare. 



Cyclostrema Dautzenbergianum 

 Anc. New species. Shell 

 very minute (diam. 1, height 

 z mill.), white, depressed, 

 widely and openly umbilic- 

 ated ; spire short, obtuse, con- 

 vex, but little raised above the 

 level of the last whorl. Whorls 

 3, rapidly increasing, with 

 regular and delicate arched 

 costellse, the last one furnished 

 besides these with three con- 

 spicuous raised and revolving 

 line, the lower one below the 

 periphery. Aperture some- 

 what oblique, circular, entire. 

 A full description and figure 

 of this delicately sculptured 

 little shell will be given at 

 some future time. Only two 

 specimens collected. 



Another very distinct and 

 also new species from Algiers 

 differs from the former in lack- 

 ing the riblets and in having 

 a very minute spiral striation, 

 both above and below. There 

 are only two revolving keels 

 below the middle of the last 

 whorl, the lower one being 

 around the umbilicus, and the 

 spiral sculpture is quite con- 



