HELIX-ALBERSIA. 89 



H. hyalina LE GUILL., Revue Zoologique 1842, p. 139. H. re- 

 fleximcula PFR., Symbolse ii, p. 98, Monogr. i, p. 327. 



PfeifFer suggests the name reflexiuscula because hyalina was 

 supposed to be preoccupied. The species has not been recognized 

 by anyone since Le Guillou. 



H. TESTUDO Pfeiffer. PL 18, fig. 64. 



Jmperforate, trochiform, rather solid, striate and decussated by 

 oblique wrinkles ; pale isabelline, painted with spots and flames of 

 brown ; spire conoid, rather acute ; suture carino-marginate. 

 Whorls 5, a little convex, regularly increasing, the last acutely 

 carinated, tumid above, slightly deflexed in front ; base subplauate. 

 Aperture very oblique, rhombic-lunar ; peristome whitish, upper 

 margin expanded, basal reflexed, columellar margin wide, flat, 

 adnate. Alt. 17, greater diam. 35, lesser 28 mill. (Pfr.) 



Madagascar. 



H. testudo PFR., P. Z. S. 1858, p. 21, t, 40, f. 6 ; Mai. Bl. 1859, p. 

 14; Monogr. v, p. 271. 



If this is really from Madagascar I would refer it to Ampelita. 

 The original figure is copied on my plate. 



Section ALBERSIA H. Adams, 1865. 



Albersia H. AD., P. Z. S. 1865, p. 410. Type H. granulata Q. & 

 G. PFR., Xomencl. Hel. Viv., p. 198, 1878. v. MARTENS, Ostas. 

 Zool. Landschn., p. 329, 1867. TAPPARONE CANEFRI, Ann. Mus. 

 Civ. Genov. xix, p. 185, 1883. 



Shell globose ; aperture but little oblique, the peristome scarcely 

 thickened, narrowly reflexed ; columellar margin steeply ascending, 

 narrowed below. Unicolored, never brilliantly colored, often 

 hirsute. 



This group should probably be regarded as a section of the genus 

 or subgenus Chloritis. This view of its position is that taken by H. 

 Adams and Tapparone Canefri. Von Martens, however, expresses 

 the opinion that its affinities are with the Philippine Island group 

 Cochlostyla (s. fat.) ; and he is followed by Pfeiffer, who places 

 Albersia at the end of the Helices between Acavus and Axina. 



Albersia is herein accepted in the restricted sense as it is under- 

 stood by Pfeiffer. H. najas, H. extensa and H. obliquata have also 

 been included by some authors, but they are not separable concho- 

 logically from the section Corasia of Cochlostyla. 



