528 
15th March, 1913, from a deep cup-shaped nest, constructed throughout of 
fibre, and built in an “Umbrella-tree.” The eggs are elongate-oval in form, 
the shell being close-grained, smooth, and lustreless, of a greyish-white 
groundcolour, over which is uniformly and freely distributed freckles, dots, 
and small irregularly shaped spots of umber-brown and blackish-brown, with 
which are intermingled similar underlying markings of faint slaty-grey, the 
markings being rather larger on the thicker end. Length (A) 92 X 0,65; 
0,91 X 0,63; 0,9 X 0,63 inches. — A Revision of the Culicidae in the 
Macleay Museum. By F. H. Taylor, F.E.S. Anopheles stigmaticus Sk., 
and A. atratipes Sk., are referred to the genus Pyretophorus; Culex flavifrons 
Sk., and C. vittiger Sk., to Culicada, C. linealis Sk., to Culicelsa; and C. 
atripes to Scutomyia, and shown to be distinct from Stegomyra punctolateralis 
Theob.; a new name is proposed for Grabhamia flavifrons Theob., which is 
a species quite different from Culex flavifrons Sk. — A Study of the Odonata 
of Tasmania, in relation to the Bassian Isthmus. By R. J. Tillyard, M.A., 
F.E.S. — Though the dragonflies of Tasmania are now fairly well known, 
the number of species is surprisingly small, particularly so on the magnifi- 
cent system of rivers; the lagoons and other still waters support a much more 
abundant fauna. A comparison made with the dragonfly-fauna of Southern 
Victoria gives the following remarkable results. Of the forms that breed 
exclusively in running water, about 22% of the Victorian fauna are found 
to have reached Tasmania. Also, these all belong to genera of recognised 
antiquity, and represent a residue of forms common to both Tasmania and 
Victoria, reaching back to the ‘‘pre-Isthmian” period, i.e., to the time when 
the connection between the two was more than a mere isthmus. Of the forms 
‘that breed in stillwater, however, about 80% have reached Tasmania. The 
20 % that have failed to do so, all belong to the most recent and highly de- 
veloped genera, which have come into Australia from the north, and evidently 
reached their southern limit only in “‘post-Isthmian” times. It is suggested 
that the reason for the big discrepancy between the percentages of the run- 
ningwater- and stillwater-forms in Tasmania, is that, throughout a long 
period, the connection between the island and S. Victoria was of such a nature 
that very few permanently running water-courses were formed, the only 
permanent water of the Isthmus being lagoons and ponds. Hence the still- 
water forms all migrated across, while the running-water forms were pre- 
vented from crossing. 
—_ -— +B [<> ———— 
Druck yon Breitkopf & Hartel in Leipzig. 
