190 HELICID^. 



Bulimus ceylanicus, var. albizonatus, Layard. A. M. N. H. ser. 2, xi, 



1853, p. 226. 

 Helix (Geotrochus) albizonata, von Martens. Die Heliceen. ed. 2. 1860, 



p. 168. 

 Bulimus (Amphidromus) albizonatus, Pfeiffer, Malak.Bliitt. ii, 1856. 



p. 147. 

 Amphidromus (Beddomea) albizonatus, Nevill, Hand List, i, 1878, 



E. 127 ; Pilsbry, Proc. Malac. Soc. London, iv, 1901, p. 159, pi. 16, 

 gs. 1, 5 (anatomy) ; ibid., Man. Conch, ser. 2, xiv, 1901, p. 7, pi. 1, 

 figs. 14-16. 

 Cochlostyla (Phengus) albizonata, Pfeiffer & Clessin, Nomencl. Helic. 



Viv. 1881, p. 210. 



Buliminus (Beddomea) albizonatus, Kobelt, Conch.-Cab., Fam. Buli- 

 minidae, 1900, p. 680, pi. 103, fig. 4. 



" T. perf orata, elongato-conica, solidiuscula, oblique striatula, vix 

 nitidula, sub epidennide pallide straminea albida ; spira conica, 

 obtusa ; sutura submarginata ; anfr. 6 plani, ultimus spira paulo 

 brevior, infra medium acute angulatus et albo zonatus ; columella 

 leviter arcuata ; apertura obliqua, truncato-ovalis, subtetragona ; 

 perist. late expansum, marginibus subparallelis, callo tenui junctis. 



" Long. 24, diam. 15 mill. Ap. c. perist. 13'5 mill, longa, 10 lata." 

 (Pfeiffer.) 



Hab. Ceylon (Nevill); Matella (Layard)', Galle (Reeve); 

 Udagama (Collett). 



In discussing the present species, Prof. Pilsbry states " numerous 

 specimens before me are smaller than Reeve's type, measuring 

 from length 29, diam. 18, to length 23, diam. 14 mill. The thin 

 cuticle is more or less yellow tinted beneath, and the periphery 

 either marked by a white line or not. The angle is frequently 

 almost completely obsolete on the face of the whorl, even when 

 strong on the back. The spire is punctulate or densely sub- 

 .granulose, at least above, but not on the last whorl." 



He continues " Kobelt (Conch.-Cab. p. 680) states that he gives 

 the figure from Conch. Icon, on his plate 103, fig. 4, but he 

 evidently did not do so." Here Pilsbry confuses Conch. Icon, with 

 Conch. Ind., for Dr. Kobelt states that his figure is copied from 

 the latter, and a comparison with that work at once establishes 

 the fact that the figure there given constituted the basis of his 

 illustration. 



Var. simoni, Jousseaume. 



Phengus simoni, Jousseaume, Me"m. Soc. Zool. France, vii, 1894, 



p. 296, pi. 4, fig. 7. 

 Amphidromus (Beddomea) albizonatus, var. simoni, Pilsbry, Man. 



Conch, ser. 2, xiv, 1901, p. 7, pi. 1, figs. 17, 18. 



Is said to differ from typical albizonatus in having one whorl 

 less, a more prominent keel, more flattened whorls, in the shell 

 l>eing white, and in the absence of a white keel-zone. Pilsbry 

 figures a shell from Udagama, received by him from Collett. I 

 have not seen authentic specimens, but the variety does not appear 

 to me to be well differentiated. 



