ACANTHINULA. 193 



long filaments. The lip-rib is of the same cinnamon color as 

 the shell. Perhaps they should be segregated as a race. 

 Pfeiffer has mentioned a "Helix granatelli Bivon. fil. in Oc- 

 chio, 1839, N. 9, f. 2," which I have not traced. 



Jeffreys has noted a mut. albida, with the shell whitish. 



Acanthinula aculeata sublaevis "West. Shell almost without 

 riblets, having no keel filaments, the aperture with a rose- 

 colored lip. Sweden, Denmark, Switzerland; type loc. : Ron- 

 neby. 



Boettger reports (Nbl. D. M. Ges., vol. 37, 1905, p. 103) a 

 specimen of form sublaevis "West, from the Sarus debris, 

 Adana, Cilicia. It is smaller and lower than usual. Alt. iy 2 , 

 diam. 1% mm. He regards "Westerlund 's variety as merely 

 shells which have lost their cuticular ribs by wear with age. 

 He records A. aculeata from Transcaucasia, Russian Armenia 

 and the Talysch district. 



Acanthinula spinifera (Mouss.). 



Vol. iii, p. 54. Palma and Grand Canary, Canary Islands. 



Helix spinifera Mouss., Revision Fauna Malac. des Cana- 

 ries, p. 25, pi. 2, f. 17-20. — Patula spinifera Mouss., Pfeiffer, 

 Novit. Conch., iv, 1870-76, p. 63, pi. 120, f. 17-20. 



Acanthinula azorica n. sp. PI. 32, figs. 7, 8. 



The shell is narrowly umbilicate, turbinate, higher than 

 wide, thin, cinnamon or a little darker colored, the apex whit- 

 ish. "Whorls convex, the first iy 2 rather coarsely striate spir- 

 ally, the rest with delicate, well-spaced, cuticular riblets, ob- 

 lique and weakly sigmoid, their intervals having fine, weak 

 strige and in places showing low spiral striation. Suture deep 

 from the beginning. Aperture rounded-lunate, the outer lip 

 very slightly expanded, narrowly thickened within with a cin- 

 namon callus, the columellar margin dilated. 



Length 2.25, diam. 1.7 mm., 4% whorls. Type. 



Length 2.1, diam. 1.75 mm., 4*4 whorls. 



Azores: S. Miguel (Morelet). Type 1515 ANSP. 



Helix aculeaia Morelet, Hist. Nat. des Azores, 1860, p. 

 175. — Patula aculeata "Wollaston, Testacea Atlantica, 1878, 

 p. 23. Not H. aculeata Muller. 



