SMITH: CATALOGUE OF GENUS PARTULA. 483 
117. Partula sp. Moorea (Garr.). (Probably P. mooreana 
Hartmess Es GH S.). 
118. Partula sinistrorsa Pse. MS. (=P. ofahettana Brug. var., 
Eig. 3; ).0) Lahiti:(Garr.). 
DiGsei. Salamewiara Weseasuhs Zi S:5°0S71,, Pp. 458 (= L. face 
Mart. var., H. H.S.). Tahaa, Garr. 
The following extracts from the Garrett letters have a general inter- 
est in connection with the genus Partuda : 
November 28, 1878: ‘‘ Following is a list of all the ground species 
(probably of the Society Islands only, H. H.S.): approximata, pinguis 
(= rustica Pse.), planilabrum, producta, navigatoria, fusca, lugubris, 
vittata, ovalis (= lugubris var.?), compressa (= radiata Garr.), rus- 
tica and crassilabris. All the others are strictly arboreal. ‘The ground 
species are only found on ‘Tahiti, Raiatea and ‘Tahaa.’’ 
Feb. 10, 1879: ‘‘After eliminating the well-marked Tahitian species, 
such as P. alternata, clara, hyalina, trilineata, ineolata and producta 
from the other species of that island, we have left a very difficult group 
to study. These include ofahettana, lignaria, amabilis, rubescens, etc. 
They have not the same specific value as those mentioned above. All 
the former are not connected with each other, or with the latter group, 
by intermediate forms. With the exception of producta, which is a 
ground species, all the others are arboreal. 
Whether the oathettana group includes one or several species will, 
in my opinion, always remain an open question, for the simple reason 
that nearly all conchologists disagree more or less in what constitutes 
a good species. Iam not quite satisfied with my own conclusions in 
regard to some of the species, and in order to clear up doubts it will 
be necessary to revisit certain localities.’’ 
May 8, 1879: ‘‘If you adopt my names and localities (for Pease’s 
species) you will have them correct. At least they ought to be, as I 
collected all Mr. Pease’s species as well as named them. Of course, 
you will use your own judgment in reducing the number of species. I 
agree with you that some of the species are simply varieties and many 
synonyms. ’’ 
March 15, 1882: ‘‘ There is a good deal of doubt (in the genus 
Partula) in consequence of the uncertainty of the true types, which 
in some cases cannot be relied on as represented in the British Museum. 
With regard to Cuming’s localities (who collected in this group some 
forty-five years ago), it really seems as if he intentionally gave the 
