687 
schweinchen gezeigt hat. Auch bei Vögeln und Reptilien scheint der 
Canalis neurentericus nicht durch Einstülpung, sondern durch Aus- 
einanderweichen von Zellen gebildet zu ba was auch Strah]!0 
bei Reptilien für môglich hält. 
Am Vorderende des Embryo findet man in einer frühen Periode (bei 
Amphioxus, Selachiern, Reptilien, Vögeln) eine zweite Stelle, an wel- 
cher Darm, Chorda und Mesoderm verschmolzen sind und es verdient 
die genaueste Untersuchung, ob nicht auch das Gehirn mit dieser 
Stelle continuirlich zusammenhängt. 
III. Mittheilungen aus Museen, Instituten etc. 
1. Linnean Society of London. 
20th November, 1884. — A paper was read »Notes on the habits of 
some Australian Hymenoptera aculeata«-by H. L. Roth. Therein he 
states that the Wasps of the genus Pelopaeus (P. laetus) build their nests on 
the walls, ceilings, legs of chairs, under the table, in cupboards, vases, be- 
tween pictures and the walls, on curtains and in all sorts of crevices in the 
house, or on the roof. Nowhere is safe from their intrusion. When a cell 
is completed the wasp goes in search of Spiders and seizing these, packs 
their half dead bodies in the cell, lays an egg and closes the cell-top. Then 
afterwards rows of cells are added to the primary one and dealt with in the 
same fashion; generally finishing with a streaked coating of mud, to deceive 
as to the = contents beneath. Ofthe Australian Ants ae rufinigra, 
is both numerous bold and destructive. They destroy the web of certain 
Caterpillars and wriggle them out, thereupon to fall a prey to a host of atten- 
dant warrior ants. Mr. F.M. Campbell exhibited a Dragon fly caught in 
September on the left bank of the Dordogne from a flight of Dragon Flies 
which were taking a south easterly direction; numbers were observed passing 
continuously for an hour and a half. He also drew attention to the steady 
progressive movement of the Humming Bird Hawk Moth when placed on 
its back. — J. Murie. 
IV. Personal-Notizen. 
Finnische Universitàt: Helsingfors. 
Zoologisches Museum. 
Director: Prof. o. Dr. Johan Axel Palmén. 
A.o. Prof. der Zoologie: Dr. Odo Morannal Reuter. 
A.0. Prof. der Entomologie: Dr. John Reinhold Sahlber 8- 
Assistent. Mag. A. J. Mela. 
10 „Beiträge zur Entwicklung von Lacerta agilis« (Archiv f. Anat. u. Entw. 1882.) 
