BOYS1A. 225 



retusa Jooss, Jahrb. Nassau. Ver. Nat., vol. 64, p. 911, pi. 62. 

 I have not seen the description of this species, which may 

 belong elsewhere. 



49. PUPILLA ECTINA (Bgt.). Pupa ectina Bourguiguat, 

 Paleont. Moll. Algerie, 1862, p. 76, pi. 4, f. 1-3. Pliocene? 

 Oued Tademit, Algeria. 



50. PUPILLA MICHAUDI Wenz, Senckenbergiana, i, July, 1919, 

 p. 66 ; new name for Pupa inornata Michaucl, Journ. de Con- 

 chyl., 1862, p. 75, pi. 4, f. 5. Hauterive (Droine), Pliocene. 



51. PUPILLA PAL^EA (Bgt.). Pupa palcea Bourguignat, Cat. 

 JMoll. terr. et fluv. des environs de Paris a 1'epoque Quater- 

 naire, 1869, p. 8, pi. 3, f. 16-18 (in La Seine. I, Le Bassin 

 Parisien aux ages antehistoriques) . Joinville-le-Pont, sabliere 

 Deligny. From the figure it appears to have a longer apical 

 cone and stronger stria? than P. muscorum, but it may per- 

 haps be equivalent to the mut. masclarycma, having parietal 

 and lower-palatal teeth. Probably Pleistocene. 



Genus BOYSIA Pfeiffer. 



Boysia PFEIFFER, Zeitsch. Malak., vi, 1849, p. 105; Mon. 

 Helic. Viv., iii, 1853, p. 528 ; Conchyl. Cab., Helix, ii, 1853, p. 

 6. ADAMS, Gen. Rec. Moll., ii, 1855, p. 167. NEVILL, J. A. S. 

 Beng., 1881, p. 128. -- PFEIFFER & CLESSIN, Nomencl. Helic. 

 Viv., 1881, p. 343. --GuDE, Fauna of British India, Moll., ii, 

 1914, p. 296. Hypostoma ALBERS, Die Heliceen, 1850, p. 130 

 (not Hypostoma, Budolphi, 1809, Vernies; not Hypostoma 

 auct., Hypostomus Lacepede, 1803 ; not Hypostoma Gray, 

 1841, Echinodermata). Hypotrema VON MARTENS, Die Heli- 

 ceen, 1860, p. 304, as section of Pupa.--"Hypoma Albers" 

 PFR., Nomencl. Hel. Viv., 1878, p. 343. "Hypostrema Albers" 

 PFR., loc. cit. 



The shell is small, globose-conoid, thin, smooth, rimate, of 

 5 compactly coiled whorls, the last half-whorl ascending ob- 

 liquely, in close contact. Aperture toothless, directed obliquely 

 upward, rounded, with straight parietal margin ; peristome 

 slightly expanded, thickened within, the parietal border barely 

 free from the preceding whorl. 



