1865.] ON THE LAND SHELLS OF THE MALAY ARCHIPELAGO. 405 
4, List oF THE LAND SHELLS COLLECTED BY Mr. WALLACE IN 
THE Matay ARCHIPELAGO, WITH DESCRIPTIONS OF THE 
New Species spy Mr. Henry Apams. By Atrrep R. 
Wautace, F.Z.S., F.R.G.S. 
(Plate XXI.) 
The following list has been drawn up principally with the view of 
recording the localities of the various species collected by me, and 
thus furnishing materials towards a more accurate knowledge of the 
geographical distribution of these animals. Of the 125 species in 
the list, upwards of fifty were first obtained by myself; and of a 
considerable number of the others, accurate localities are now for the 
first time given. The restricted range so characteristic of land shells 
is well shown by my collection, no less than ninety species, or more 
than two-thirds of the whole, being confined each to a single island. 
The difference between the faunas of the Indo-Malayan and Austro- 
Malayan regions is also well marked, a number of characteristic 
genera and species of true Helicide being peculiar to the latter ; 
while only four of this family were found by me in the former re- 
gion. The true thick-lipped Bulimi are quite absent from the Mo- 
luccas and New Guinea, as they are from Australia; while they 
abound in the Indo-Malayan islands, and have extended thence into 
Celebes and through the islands east of Java as far as Timor. 
The various species have been named by comparison with the type 
specimens in Mr. Cuming’s collection; and to Mr. H. Adams’s 
kind assistance are due the determination and arrangement of the 
genera and families. He has also described the eight species which 
are unique in the collection. 
With a very few exceptions, all the shells comprised in this list 
now form part of the collection of William Wilson Saunders, Esq. 
STENOPIDZ. 
1. HELICARION ID. 
Hab. Bouru ( Wall.) ; Celebes (Pfr.). 
2. MicrocysTIS MISELLA, Fer. 
Hab. Aru Islands ( Wail.) ; Moluccas; Marian Islands (Albers). 
Remark.—Found on a rotten trunk. 
3. MACROCHLAMYS CONSUL, Pfr. 
Hab. Borneo ; Bouru (Wail.). 
4. MacrocHLAmys GLUTINOSA, Met. 
Hab. Borneo ( Waill.). 
Remark.—Found among fallen leaves. 
5. NANINA CITRINA, Linn. 
Hab. Aru Islands (Wall.): var., small, yellow, without bands. 
