51 G GEOGRAPHICAL ZOOLOGY. [part tv. 
Macroceramus (27 sp.), Antilles, Florida, and Peru. The 
species have been more than doubled. 
Vitrina (26 sp.), widely scattered through North and Central 
Europe, North-west America and Greenland, Abyssinia, Mada- 
gascar and South Africa, Himalayas to Burmah and Australia. 
Species since described have more than doubled the number in 
this genus. 
Orthalicus (23 sp.), Bolivia to Mexico and Antilles. This genus 
has been increased to about 40 species. 
Sagda (19 sp.), Antilles only. Very few new species, if any, 
have been described. 
Zonites (12 sp.), South Europe, with one species of a distinct 
type in Guatemala. The number of species in this genus has 
been since about tripled. 
Leucochroa (11 sp.), Mediterranean region to Syria and 
Arabia Petrea. 
Simpulopsis (7 sp.), Bahia, Antilles, and far away in the 
Solomon Islands. Two or three have been added. 
Balea (6 sp.), Middle and North Europe, Brazil, and the 
Island of Tristan d’Acunha. 
Daudebardia (6 sp.), Central and South Europe ; and a species 
has since been discovered in New Zealand. 
Macrocycles (4 sp.), Chili, California, Oregon and Central 
North America. 
Columna (3 sp.), West Africa, Princes Islands and Madagascar. 
Stenopus (2 sp.), Island of St. Vincent (West Indies.) 
Pfeifferia (2 sp.), Philippines and Moluccas. 
Testacella (2 sp.), West Europe and Teneriffe. About 8 species 
have been since described, including one from New Zealand. 
Fossil species of Helix , Bulimus, Achatina, Balea , and Clau- 
silia, are found in all the Tertiary formations ; while a species 
of Pupa (as already stated) occurs in the carboniferous forma- 
tion. For interesting details of the distribution of the sub- 
genera and species of Achatinella in the Sandwich Islands, see a 
paper by Eev. J. T. Gulick in the Journal of the Linnean 
Society . (Zoology, vol. xi. p. 496.) 
