362 On African Non-marine Mollusca. 



straight, receding moderately to the base ; columella almost 

 rectangularly truncate. 



Long. 13*5, lat. 3*8; apert., alt. 3*2, lat. 1*7; last whorl 

 6*0 mm. ^ 



Hab. Kenya, Mt. Nyiro, 8300 ft. {Percival). 



The type is somewhat immature, but differs beyond com- 

 pare from the last four species. It is far more nearly allied 

 to S. lucasi, Pilsbry, from which it may be distinguished by 

 its less regular spire, darker colour, and slightly coarser 

 transverse sculpture, while the spiral striation is far more 

 clearly visible under equally strong magnification. It must 

 be admitted that none of these features are in themselves of 

 much specific value, but taken together, and considering the 

 wide distance between the localities of the two species, it 

 seems advisable to accord S. cornu-orycis specific, rather 

 than subspecific, rank. 



Subuliniscus alticola (d^Ailly), 1910. (PI. I. fig. 10.) 

 1910. Petriola alticola, d'Ailly, Kilimandjaro, i. 6, p. 27. 



As the publication in which this little-known species was 

 described is not commonly available, I give a photograph of 

 a paratype from Meru. 



EXPLANATION OF PLATE I. 



Fig. 1. Homorus bwmessi, Conn. 



Fiff. 2. illitus, Conn. 



Fig. 3. zebra, Conn. 



Fig. 4. Euonyma lymneceformis (M. & P.), normal form. 

 Fig. 5. Homorus egregius, Preston, var. injiata, Conn. 

 Fig. 6. Pseudoglessula batesi, Conn. 



Fig. 7 . , var. ?7iajor, Conn. 



Fig. 8. perohtusa, Conn. 



Fig. 9. Homorus ivoodhousei, Conn. 

 Fig. 10. Subuliniscus alticola (d'Ailly). 



Fig. 11. iirguessensis, Conn. 



Fig. 12. adjacens, Conn. 



Fig. 13. marsabitensis, Conn, 



Fig. 14. nyiroensis, Conn. 



Fig. 15. cormiorycis, Conn. 



Fig. 16. Subulina taruensis, Conn. 



Fig. 17. Pseudoglessula transenna, Conn. 



Fig. 18. soUtudinum, Conn. 



Fig. 19. ■ ingloria, Conn. 



Fig. 20. Nofhapalus iredalei, Preston. 



Fig. 21. ■ , (?; forma tumida. 



Fig. 22. Pseudoglessula mutabilis, Conn. 



Fig. 23. mutandana, Conn. 



Fig. 24. Subulina turtoni, Conn. 



Fig. 25. viridula, Conn. 



Hg. 26. Nuthapaius ugaruUmus, Conn. 

 lelus^ Conn. 



All figures actual size. 



