386 RALPH TATE. 
Genus Volutilithes includes spp. 29 and 30 ;! this generic refer- 
ence had already been implied by the author of the species. 
Genus Voluta, subgenus Aulica includes spp. 5, 15, 22, 24, 31 
and 32 : 
Subgenus Volutoconus includes sp. 10 as referred thereto by me. 
Subgenus Amoria includes sp. 17 as referred thereto by me. 
Subgenus Pterospira, this is a new group established for the 
reception of sp. 1. 
Genus Scaphella includes spp. 11, 12, and 14. 
Subgenus Losephea includes spp. 21, 25 and 26. 
This classification does not meet all the requirements, and I 
venture to regroup the species. In the first place the subgenus 
Pterospira, which is characterised by a wing-like expansion of the 
outer lip and by an enormous globose protoconch, is unnecessary; 
as otherwise other new groups would require to be established 
for V. macroptera and V. Mortoni, which have an alate expansion 
of the lip but have very dissimilar protoconchs. The section 
Mamillana might receive V. Hannafordi, as its type has a similar 
protoconch and an incipient winged outer lip; so also may the 
other winged species be distributed in a section already constituted. 
Genus Volutilithes. 
Characterised by its small acute protoconch, contains J. anti- 
scalaris and V. anticingulatus, both of McCoy. 
Genus Voluta. 
Protoconch mamillate, relatively large. 
Section VESPERTILIO. 
Protoconch turbinate, crenulated. Examples V. Macdonalds 
and V. uncifera. 
Section AvLica. 
Differs from the foregoing by more conic and smooth pullus. 
Examples, V. ellipsoidea, V. lirata, V. costellifera, V. Weldit, 
V. strophodon, V. cathedralis, and V. tabulata. 
1 lean? L 3 54%) 2% 
= 
+ i 
. £ tho enecies. 
Jy SYROpsis v $s 
