INTRODUCTION. 



Owing in part to the absence of anatomical data, in part to the 

 want of sufficient knowledge to interpret the facts in our possession, a 

 number of groups belonging to the Helicidce were formerly referred 

 to the BulimulidcR or "Bulimida," by reason of the lengthened and 

 Bulimoid contour of their shells. Investigations made during the 

 progress of the monographs on Bulimi have shown the true relation- 

 ships of several of these genera. 



Family ZONITID^. 

 Genus CALYCIA H. AD. xiv, p. 20. 



The following genera are to be added to the Helicidce enumerated 

 in vol. ix of this series. 



Family HELICIDJE (sensu Pils.) 

 Subfamily CAM^ENIN^E (Epiphallogond). 



Genus AMPHIDROMUS Albers, 1850. 



Man. Conch, xiii, p. 127; xiv, pp. 167, 282. A Bulimoid group 

 of arboreal snails, extending from Indo-China to Timor. 



Section Syndromus Pils., vol. xiii, p. 184. Same geographic 

 range. 



Subgenus BEDDOMEA Nevill, xiv, p. 1. Southern India and 

 Ceylon. 



Subgenus PSEUDOPARTULA Pfr., xiv, p. 9. Java, Sumatra and 

 Borneo. t 



Genus DRAPARNAUDIA Montr. 1859. 



Man. Conch, xiv, p. 12. New Caledonia and New Hebrides. 



Subfamily HELICIN^E (Bdogona). 

 (Belogona Euadenia.} 



Genus EULOTA Hartm. (Vol. ix, p. 200). 

 Subgenus DOLICHEULOTA Pils., vol. xiv, p. 18. Formosa. 

 ( Belogona Siphonadenia. ) 

 (iii) 



