TRUNCATELLINA. 



75 



Appenines: Sassorosso. 



De Stefani further remarks that it may be a variety of V. 

 dlicratis Scacchi, but the very small size, the somewhat 

 irrel-like form, the last whorl being more compressed than 

 ic others, and the teeth, which appear to be more numerous 



some cases, retain it sufficiently distinct. 



Truncatellina callicratis (Scacchi). Shell small, cylindric, 

 xrneous, umbilicate; whorls 5, rounded, obliquely striate; 

 iperture ovate, toothless ; lip a little reflected. Length scarcely 

 [, diam. y 2 li ne (Scacchi). 



Italy: Naples (type loc.) ; Sicily. 



Turbo callicratis SCACCHI, Osserv. Zool., 1833, p. 11. Pupa 



licratis Sc., Cat. Conch. Reg. Nap., p. 16. PHILIPPI, Enum. 

 [oil. Sicil., ii, p. 220. PFR., Monogr., ii, p. 307. Pupa stro- 

 ?li var. callicratis Sc., WESTERLUND, Fauna, iii, 1877, p. 126. 



-Vertigo callicratis De Stefani, Bull. Soc. Malac. Ital., ix, 

 L883, p. 182, with var. nodosaria, and subvarieties maruccn 

 id simii. 



Westerlund, who obtained specimens from the original 

 ility, states that callicratis is a form of strobeli [rivierana] , 

 [iffering from that by its still more cylindric form, rounded 



>ve, the more slowly increasing whorls which are therefore 

 >wer, more convex, the last built far forward in front ; by the 

 leeper suture and stronger sculpture (obliquely, finely ribbed 



the upper half or throughout) ; the outer lip more strongly 

 irved and expanded; the aperture as in typical strobeli, 

 tree-toothed, two-toothed or more rarely toothless. 



The descriptions of the following forms are taken from 

 r esterlund, as I have not seen De Stefani's paper. 



Var. nodosaria De Stef. Whorls more convex; suture more 

 leeply constricted; peristome more expanded, more strongly 

 rhite-lipped ; length 2, diam. 0.9 mm. 



Sub var. maruccii De Stef. More lengthened, with less 

 >nvex whorls ; somewhat larger than typical nodosaria. Sub- 

 ir. simii De Stef. Smaller, more compact and convex, aper- 

 tre toothless ; length 1.5, diam. 0.4 mm. 



