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XIV. New Fossorial Hymenoptera from Australia. By 
Rowland E, Turner, F.Z.S. 
[Read June 1st, 1910.] 
Plate L. 
Most of the new species described in this pajier are from 
the collection of Dr. R. C. L. Perkins, who has kindly 
handed them to me for identification and description. 
Most of the species from the Cairns district were taken 
by the well-known collector, Mr. F. P. Dodd. They 
include representatives of two genera, Spilomena and 
Piagetia, not hitherto recorded from Australia, also further 
species of the rare Australian genus Sphodrotes. 
Family THYNNIDAE. 
Rhagigaster unicolor, Guer., st. mutatus, st. nov. 
Differs from the typical Sydney form in the following 
details:— 
The head is a little broader than long, the median 
segment much more strongly broadened from the base, 
the vertex and front more closely and coarsely punctured 
and the sixth dorsal segment narrower in the middle, not 
triangular as in unicolor, but more sharply narrowed from 
the base. 
The triangular space at the apex of the clypeus is 
much narrower, and is rugose instead of smooth. 
Hah. S. Queensland, Tambourine Mts., Toowoomba. 
The differences in the local races of the male are very 
slight, but the females differ much more especially in the 
shape of the head and median segment. In these points 
the S. Queensland form approaches the Victorian form 
lyelli, Turn., much more nearly than the Sydney form. 
Tachyiiomyia adusta, Sni. 
Thynnus adushcs, Sm., Cat. Hym. B.M.,vii, p. 43, 1859, $. 
Aelitrus inlosidus, Sm., Cat. Hym. B.M., vii, p. 56, 1859, 
A male of this species from the Tambourine Mts., S. 
Queensland, has the legs black, the wings a little more 
TRANS. ENT. SOC. LOND. 1910.— PART IV. (DEC.) 
