192 Dr. Malcolm Burr’s 1 Preliminary Revision of the 
The type of this genus is Brachylahis chilensis, Blanchard, 
from Chile, 
It is very unfortunate that the true Chilian B. chilensis 
is not better known ; it is not represented in any collection 
that I have examined, and I have not been able to find 
the types in the Paris Museum, where, however, Dohrn 
found them and redescribed them. 
Now Dohrn’s description is important, for it gives 
several features which preclude that species which is 
generally labelled B. chilensis in collections, but comes 
from Brazil, and not from Chile. 
It is a pity that Dohrn does not refer to the size, nor 
form of the eyes, nor to the presence or absence of a keel 
on the mesonotum.* These are, of course, essential fea¬ 
tures, and as B. chilensis is the type-species of the group, 
it is most desirable tliat the doubt be removed as soon as 
possible. 
The Brazilian species commonly known as B. chilensis, 
being distinct therefrom, requires a new name, for which I 
propose coriacea, as some specimens are thus named in 
MS. in the Brunner collection. 
The points in which B. cormcca, sp. n., differs from 
B. chilensis, according to Dohrn’s description, are as 
follows: — 
B. chilensis, Blanch. 
(From Chile ; based on Dohrn’s 
description.) 
Pronotiim so breit als lang. 
Pronotuni in der Mitte quer 
geteilt durch eine Sattelfoermige 
Vertiefung. 
Das 2te und 3te Segment des 
Abdomens mit deutlicher Falte. 
. . . die folgenden Segmente 
beim ^ an der Seite winklig, 
nach hinten in eine stumpfe 
Spitze ausgezogen. 
B. coriacea, sp. n. 
(From Brazil.) 
Pronotum about H times 
longer than broad. 
Pronotum not so divided ; no 
transverse sulcus. 
Tubercles feeble. 
Sides of these segments in the 
^ rounded. 
* Blanchard’s description and figure are equally silent on these 
essential points ; his figure is very sketchy, and probably untrust¬ 
worthy ; it gives small eyes and smooth mesonotum, but we must 
not attach too much importance to it. 
