CHAP. XXIJ,] 
MOLLUSCA. 
519 
from the East coast of South America. The genera have a 
somewhat restricted distribution as follows : — 
Auricula (128 sp.), India, Pacific Islands, Peru and West 
Indies; Melampus (56 sp.). West Indies and Europe; Cary - 
chium (9 sp.), Europe and North America ; PUctrotrema (14 sp.), 
Australia, Malay Islands, China, Cuba ; Blauneria (2 sp.), West 
Indian and Sandwich Islands. There are many fossil species 
ranging back to the Eocene formation. 
Family 27. — ACICULFCGE. (4 Genera, 65 Species.) (I 860 .) 
General Distribution. 
Neotropical 
Sub-regions. 
N EARCT1C 
Sub-regions. 
Pa LAS ARCTIC 
Sub-regions. 
Ethiopian 
Sub-regions. 
Oriental 
Sub-regions. 
Australian 
Sub-regions. 
- 2 . 3 . 4 - 
1.2 
1 . 2 - 4 - 
4 
! 
to 
! 
£ 
12.3 — 
The Aciculidte are small cylindrical shells chiefly found in 
the West Indian Islands, but with representatives widely 
scattered over the globe. 
Acicula (5 sp.) is European only; Geomelania (21 sp.), and 
Chittya (1 sp.), are confined to the Island of Jamaica ; Trunca- 
tella (38 sp.),is most abundant in the Antilles, but is also found 
in some part of each of the six regions, as indicated by the 
diagram of the family. But few new species have been added 
to. this group. 
Family 28. — DIPLOMMATINIDiE. (3 Genera, 23 Species.) 
(1865.) 
General Distribution. 
Neotropical 
Sub-regions. 
Bearctic 
Sub-regions. 
Pa i. a: arctic 
Sub-regions. 
Ethiopi V N 
Sub-regions. 
Oriental 
Sub-regions. 
Australian 
Sub-regions. 
4-2 
1 - 3 . 4 - 
1 . 2.3 4 
The Diplommatinidse are minute shells of the Oriental and 
Australian regions. 
