.HELIX. 39 



\_Caseolus, Lowe.] 



H. SPHJERULA, Lowe. PI. 8, fig. 32. 



Very minutely perforate or imperforate, rather solid, substriate, 

 sparsely granulate, a little shining, smooth towards the apex, suture 

 impressed; whorls 5-7, slightly convex, slowly increasing, the last 

 suddenly deflected in front and a little contracted, periphery obso- 

 letely angulated, base flattened ; peristome subsimple, scarcely ex- 

 panded, callous within at the base. Diam. 4*5-7 mill. 



Porto Saneto ; fossil in Madeira. 



H. subcallifera, Lowe is a synomym. 



H. CONSORS, Lowe. PI. 8, fig. 33. 



Subperforate, costulately granular above, smooth, striulate and 

 shining below, variegated with white and chestnut, base paler; 

 whorls 6, flatly convex, the last suddenly deflected in front, periph- 

 ery obsoletely angulated; aperture white, peristome simple, with 

 distant margins, Diam. 9 mill. 



Ins. Porto Saneto. 



H. CALCULUS, Lowe. PI. 8, fig. 34. 



Subperforate, solid, striulate, finely, closely granular throughout, 

 yellowish ash color or chalky white, obsoletely double banded with 

 chestnut, suture impressed ; whorls 52-6, somewhat convex, the last 

 deflected in front, periphery bluntly angulated; peristome acute, 

 subcontinuous, slightly expanded. Diam. 7-8 mill. 



Ins. Porto Saneto. 



It is H. compacta, ft, of Albers. 



H. COMPACTA, Lowe. PI. 8, fig. 35. 



Perforate, somewhat solid, costate-striate and granular above, 

 striulate, smooth and shining below, variegated with white and 

 corneous, with an obsolete brown band below; whorls 6, slightly 

 convex, the last obsoletely angulated, scarcely descending in front; 

 peristome simple, margins approximating. Diam. 6 mill. 



Ins. Porto Saneto. 



IL innominata, Gray is a synonym. 



H. ABJECTA, Lowe. PI. 8, fig. 36. 



Perforate, solid, minutely granular, rugosely striate above, grey- 

 ish, below with an obsolete chestnut band, spire elate; whorls 6J-7, 

 the last subcarinated, suddenly deflected, in front, base a little con- 



