Notes upon a Collection of Shells from Borneo, Etc. 2 5 



14 Trochomorpha bicolor, V. Martens. 

 Only one specimen. 



15. Trochomorpha planorbis, Lesson. 

 Var appropinquata, V. Martens. 



16. Bulimus perversus L. 



About twenty specimens, part of which are sinstral. They are all 

 without the characteristic yellow ground usually so strong in this spe- 

 cies ; they are strongly marked and resemble the variety B. interruptus, 

 Brag. All are larger and more solid than usual. 



Mr. Doherty states that each variety occupies a distinct area. 



17. Leptopoma lowi, Pfr. 

 One specimen. 



18. Leptopoma sericatum, Pfr. 

 One specimen 



19. Cyclophorus barbatus, Pfr. 



One young example. 



20. Cyclotus ptychorapheQ) V. Martens. 



Two dead specimens. 



21 Pterocyclos te/iuilabiatus, Metcalfe. 



Numerous examples. 



22. Opisthoporus euryomphalus, Pfr. 



Twenty -three examples. 



23. A/ycceus, n. sp. 7. PI. III., figs. 2, 2a, 2b. 



Two dead specimens received. They differ from anything I can 

 find that has heretofore been described from Borneo. If new, I pro- 

 pose the name Alycceus broti for it, and append the following descrip- 

 tion : 



Shell small, whorls fine, covered with strong, raised, vertical striae, 

 finely set upon the body whorl. Apex smooth, whorls rounded, aper- 

 ture twisted downward, almost vertically to plane of shell. Lip 

 exserted and bordered by a reflected expansion. Umbilicus open, 

 showing the convolutions of the shell. Diameter about 7 mm., height 

 3^ mm. This species resembles the Indian forms much more than 

 those from Borneo. It may possibly be A. spiracellum Ad. & Rve, 

 whose figure and description I have not had access to. 



24. Diplommatina co?icinna, H. Adams. 

 One specimen. 



