12 
by the stouter hairs. The placenta was discoidal and closely 
resembled that of the Mouse (JZws musculus). The trophoblast 
was greatly thickened, and formed a distal portion which was 
broken up into a system of large irregular spaces containing 
maternal blood, and a proximal portion with more regular 
channels containing maternal blood between which fcetal vessels 
extended. The proximal wall of the yolk-sac was very vascular 
and much folded, but the folds did not become involved in the 
placental tissue as in some other Muride. The course of the 
blood-circulation and details of histology were also described. 
A paper was communicated by the Rev. H.8. GorHAm on some 
new Coleoptera from South Africa. The Beetles referred to were 
of the families Malacodermata, Cleride, and Hrotylide ; and had 
been collected by Dr. H. Brauns of Willowmore, in Cape Colony, 
either at Willowmore or at Delagoa Bay in 1900 or 1901 ; and 
indicated that the Fauna of South Africa was rich in species of 
the two first families, and more so than had been supposed in 
members of the latter family. One new genus was described. 
Dr. A. Smira Woopwarp, F.R.S., communicated a paper by 
Baron Francis Nopcsa entitled ‘“‘ Remarks on the supposed 
Clavicle of the Sauropodous Dinosaur Diplodocus.” 
This Meeting closes the Session 1904-1905. The next Session 
(1905-1906) will commence in November next. 
The following Papers have been received :— 
1. Mr. Marrry Jacosy, F.E.S.— Descriptions of new Species of 
Oedionychis and allied genera (Phytophagous Coleoptera). 
2. Dr. Water Kipp, F.Z.8.—On the Papillary Ridges in 
Mammals, chiefly Primates. 
3. Mr. F. E. Bepparp, F.R.S.—On some points in the Vascular 
System of Hatteria compared with that of the Lacertilia and 
Crocodilia. 
Communications intended for the Scientific Meetings of the 
ZooLoctcaL Society oF Lonpon should be addressed to 
P. CHALMERS MITCHELL, Secretary. 
3 HANOVER SQuaARE, Lonpon, W. 
13th June, 1905, 
