226 BOYSIA. 



Type: Boysia boysii (Pfr.). Found only in India. 



The classification of Pupillidae having no teeth is an ex- 

 ceedingly difficult problem. When the tentacles and radula 

 of Boysia are examined it may be possible to form some defi- 

 nite opinion of its affinities. Temporarily it may be left next 

 to Pupisoma. 



The generic and specific nomenclature of the single species 

 has been fully discussed by Glide in The Fauna of British 

 India. Boysia reussn Stoliczka (Sitzungsber. d. k. k. Akad. 

 Wissensch., vol. 38, 1867, p. 493, pi. 1, f. 17a-c), from the 

 middle Cretaceous of Neualpe in the eastern Alps, has been 

 referred by Sandberger (Vorwelt, p. 80) to the Cyclostoma- 

 ceous genus Strophostoma. Anostomella of von Martens has 

 some superficial resemblance, but appears referable to the 

 Diplommatinidcc. 



Various Laramie and Eocene species of Wyoming have been 

 referred to Boysia or its vicinity by Prof. T. D. A. Cockerell, 

 but were subsequently removed by him. Boysia sinclairi Ckll. 

 and B. phenacodorum Ckll. being referred to the genus 

 Granger ella. 



1. BOYSIA BOYSII (Pfeiffer). PL 24, figs. 14, 15, 16, 17. 



"Shell arcuately rimate, compressed-conic, thin, smooth, 

 diaphanous, pale corneous. Spire obliquely couoidal, little 

 obtuse. Whorls 5, convex, the last arcuately ascending to the 

 upper edge of the antepenult whorl. Aperture subtriangular- 

 rounded, toothless ; peristome nearly simple, a little expanded, 

 the margins joined by a shortly free lamina. Alt. 3, diam. 

 3.5mm." (Pfr.). 



India: Chittore, Eajputana and Azmere (Boys) ; Nerbudda 

 valley (Nevill, Stoliczka) ; Mandate, on the Nerbudda (Theo- 

 bald coll.) ; Bengal (Cuming coll.). 



Tomogeres loysn (Anostoma) Benson, PFEIFFER, Symbolae 

 ad Hist. Hel., iii, 1846, p. S2.Anostoma loysii Benson, PFR., 

 Monogr. Hel. Viv., i, 1847, p. 2. BENSON, Ann. Mag. N. H. 

 (2), ii, 1848, p. 164. Hypostoma boysii Benson, ALBERS, Die 

 Hel., 1850, p. 130. Pupa (Hypotrema) boysii Bens., VON MAR- 

 TENS, Die Hel., 1860, p. 305. Boysia loysii Bens., KOBELT, 111. 



