150 Mr. R. E. Turner on the 
The nuchal was very wide (about 230 mm.), while its 
length in the middle line was only about 67mm. It seems 
to have had a small median prominence on either side. of 
which its border is slightly concave. Its form is peculiar, 
and J have been unable to find any other nuchal similar to it. 
The neural bones are long and narrow. The first is four- 
sided, the long lateral borders being slightly convex; the 
posterior end is bluntly pointed to fit into a notch in the 
front border of the second. This latter, together with 
the other neurals preserved, has a short anterior lateral 
border and a long posterior one; the posterior end in all is 
rounded and fits into a concave anterior border of the bone 
behind. The anterior costal is roughly triangular in outline, 
its outer border occupies exactly the length of the first two 
marginal bones. The second costal is about. 70 mm. wide at 
its inner end, but widens out to about double this before it 
joins the marginals. The third costal, on the other hand, 
which is about the same width at its inner end, narrows to 
about half this at its outer end. The fouth costal widens 
out like the second. The fifth is only partly preserved. 
This alternate widening and narrowing of the costal bones is 
seen in many species of Testudo, but here the form of the 
neurals and their relations to the costals is quite different. 
The grooves marking the outlines of the horny shield are 
well marked, There may, perhaps, have been a very small 
nuchal shield ; the first marginal shield, in correlation with 
the great width of the nuchal bone, is very long from side to 
side and narrow. The form of the costal and marginal 
shields and their relations to the underlying bones will be 
best understood from the figure. The shape and arrangement 
of the shields are much as in Emys. 
This specimen has been compared with any other forms 
with which relationship seemed likely, but differs very 
considerably from all. Its chief distinguishing character- 
istics are the great width of the nuchal bone, the long narrow 
neurals, and the alternate widening and narrowing the costals. 
I propose to refer this specimen to a new genus, Patanemys, 
the specific name being Patanemys bartonensis, sp.n. It 
seems to belong to the family Emydide. 
XITX.—WNotes on the Ichneumonide in the British Museum.— 
III. On a new Tasmanian Species. By Row ann HE. 
Turner, F.Z.S., F.E.S. 
Platylabus altitudinis, sp. n. 
@. Nigra; mandibulis in medio, palpis, antennis articulis 8 
basalibus, pedibusque, coxis exceptis, ferrugineis; trochanteri- 
