Eremochetous Dipteron with Vestigial Wings. 325 
(6) There is no distinct scutellum; the back of the meso- 
notum presents only indistinct furrows close to its posterior 
border, from which the scutellum or the metanotum cannot 
be recognized. This is well shown in the photograph. 
(c) In consequence of this reduction of the distal part of 
the thorax the posterior cox are placed in contact with the 
intermediate ones. 
(d) The rudiments of the wings are well developed, being 
much more than “minute prominences.” In the type- 
specimen they are 2mm. long, and have a stalk-like basal 
part and a dilated terminal portion. The rudiments of the 
halteres are less developed. 
(ec) The back of the mesonotum has a distinct pattern, 
being reddish yellow, with a broad, longitudinal, complete 
Boreoides tasmaniensis, sp.n., 2. Hobart, Tasmania; type and co-type 
in South Australian Museum. Enlarged photo, by Rag. A, 
Lucchetti, Turin. 
blackish stripe, which ends in front of the first posterior 
furrow. ‘The abdominal pattern, when distinguishable, is the 
same as in subulatus. 
Additional Note.—Since this was written, I have received, 
through the courtesy of Mr. Hardy, a female paratype of his 
Boreoides subulatus. Comparing this specimen with the type 
of Bor. tasmaniensis, I have found that the differences in the 
annulation of third antennal joint and in the position of hind 
cox are not constant, being similar in the two species. On 
the other hand, there are very important differences in the 
shape of scutellum, in the length of wing-rudiments, and in 
the coloration of the back of mesonotum. I find, moreover, 
that the legs of tasmaniensis ave considerably more thin and 
