142 Contributions to Indian Malacology. [No. 2, 



as well developed as adults, so that they must be formed and re- 

 absorbed, as I have shewn to be the case in the Plectopylis section 

 of Helix : Ann. and Mag. Nat. Hist. Ser. 3, Vol. VII. p. 244. 

 Pfeiffer — Mon. Vol. IV. p, 342, — describes the occurrence of the colu- 

 mellar plicae in the young of JE. Pirriei. 



11.— Streptaxis Canarica, Beddome, MS. Pi. XVI, fig. 11. 



Testa umbilicata, depressa, ovata, cerea, nitidula undigue flexuose 

 capillaceo striata. Spira convexa ; apice obtuso; sutura vix impressa 

 sub-mar ginata. Anfr. 5J, parum convexi, penultimus postice acute 

 carinatus, ultimus valde antrorsum devians, post aperturam fossiculis 

 brevibus tribus constr ictus, subtus convexus, ad basin circa umbilicum 

 compressus. Apertura obliqua, irregulariter semiovata, lamina una 

 parietali torta valida et dentibus sex in peristomate fere cequidisiantibus 

 coarctata. Peristoma albiditm, undique sub-late expansum, ad unguium 

 sinuatum, marginibus callo lamelliferi junctis. Dium. maj. vix 8, 

 min. 5|, alt. 3 \ mill ; apert. cum per ist fere 3 mill, longa, 2 J lata. 



Hab. In Provincia South Canara, haud procul a littore occi- 

 dentali India. 



Shell umbilicated, depressed, ovate with considerable lustre and 

 the colour of wax, with close rather irregular and flexuous hair-like 

 striation both above aud below. Spire convex, apex obtuse, suture 

 scarcely impressed, sub-marginate. Whorls 5J, very little convex, 

 the penultimate sharply keeled on the side opposite to the aperture, 

 last whorl very excentric, with three distinct depressions behind the 

 peristome ; compressed beneath, especially near the mouth. Aperture 

 oblique, irregularly semi ovate, with 7 teeth ; 1 lamelliform doubly 

 curved and re-entering for a short distance on the callus, uniting the 

 margins of the peristome, and 6 in the peristome itself nearly equi- 

 distant from each other : of these two are on the outer margin, one 

 at the curve wbere the peristome bends round towards the umbilicus, 

 and 3 along the inner, or columellar, margin. The two lowest of the 

 latter are the closest together of any. Peristome white, expanded, 

 curved back considerably close to the junction with the last whorl. 

 Major diameter 0.32, minor 0.22, height 0.14 inch, aperture 0.12 

 inch long, 0.11 broad. 



This is the first strongly keeled species which has been met with in 

 India. In form it much resembles the Molmain S. Sankeyi, Bens. 



