Species and Varieties of Pupa. 411 



1880. Pupa [Vertiyo) sinistrorsa, Craven, Proc. Zool. Soc. p. 618, 

 pi. Ivii. fig-. 8. 



1891. Vertigo thaumasta, Melv. & Pons. Ann. & Mag. Nat. Hist. ser. 6, 

 vol. viii. p. 239. 



1892. Vertigo thawnasta, Melv. & Pons. ibid. vol. ix. p. 94, pi, vi. 

 fig-. 7. 



1908. Pupa ( Vertigo) sinistrorsa, Craven, Melv. & Pons. Ann. & Mag. 



Nat. Hist. ser. 8, vol. i. p. 8-3. 

 1910. Pujnlla * tetrodus (Bttg.), Abhandl. d. Senckenb. naturf. Gesell. 



Ed. ,\xxii. p. 440. 



21. Pupa [Fa'ixulus) capensis (Kurr). 



Var. kurri (Krauss). 



Var. pottehergensis (Kiauss). 



These varietal names seem scarcely worth perjoetuating, as 

 all intermediate forms, as well as other forms with attributes 

 of equal varietal value, exist. 



22. Pupa [Fauxulus) fryana (Bens.). 



23. Pupa (^Fauxulus) glanvilleana (Ancej). 



As Mr. Ancey described this shell very carefully and with 

 close attention to detail in order that it might be recognized 

 from description alone without the help of a figure, it may 

 be taken for granted that no important feature was omitted 

 from his diagnosis. It therefore appears to me that Melvill 

 and Ponsonby erred in choosing the figure of my shell, found 

 at Dargle, Natal, to illustrate Ancey's species in their Survey, 

 for that shell does not by any means closely agree with 

 Ancey's description, being shorter and wider than the typical 

 glanvilleana, and possessing two plaits on the base of the 

 peristome not mentioned in Ancey^s description, besides 

 showing other discrepancies. I cannot but doubt if the two 

 forms belong to one species, but in our present ignorance as 

 to what Ancey^s shell really is through no figiare having been 

 published with his description, and tlhc tyjie not being avail- 

 able for reference, it is impossible to estimate exactly the 

 extent of the divergence, so I have deemed it best tentatively 

 to treat the Dargle shell as a variety of glanvilleana^ with 

 which it seems to have much in common. 



* If B. B. Wood shard's arrangement be followed. Papilla becomes the 

 subgen. Janimia (s. s.). 



