48 



chyme of the outer surface of the allantois, where they break up into ca- 

 pillaries. These capillaries become closely applied to the uterine mucosa, 

 and form with it a somewhat irregular interlocking system — the capillaries 

 dipping down into the substance of the mucosa to form short villous pro- 

 cesses. These vascular processes come into close relation with the n^aternal 

 capillaries which ramify on and near the surface of the mucosa so that 

 transfusion can readily take place between the foetal and maternal blood. 

 — 9) and 10) Botanical. — Mr. Steel exhibited a vivarium containing six 

 or eight specimens of the N.S.W. Peripatus with their progeny, about thirty- 

 six young , born within the past fortnight , after the mothers had been in 

 captivity for about 10 months. The exhibitor stated that he had had the 

 pleasure of witnessing the natural birth of numbers of these young. In the 

 same vivarium was a young Peripatus, the survivor of a number born 10 months 

 ago in captivity 



f 3. New York Academy of Sciences, Biological Section. 



December 9, 1895. — The following papers were presented: — Prof. 

 C. L. Bristol: »The Classification of Nephelis in the United States«. The 

 study of abundant material, collected from Maine to South Dakota, has 

 shown that the color characters cannot be depended upon for specific de- 

 termination. An examination of the metameral relations of this leech 

 indicate that no more than a single species occurs in this country. — Prof. 

 F. H. Osborn: »Titanotheres of the American Museum of Natural 

 History«. The complete skeleton of Titanotherium robustum is remarkable 

 in possessing but twenty dorso-lumbar vertebrae, a number identical with 

 that typical of the Artiodactyla , but entirely unique among Perissodactyla. 

 It now appears probable that the development of horns in the Titanotheres 

 became a purely sexual character, and that the genera Titanops, Marsh and 

 Brontops^ Marsh, are founded respectively upon male and female individuals 

 of Titanotherium robustum. — Dr. J. L. Wortman: »The expedition of 

 1895 of the American Museum of Natural History«. The Expedition passed 

 into the Unita beds of N. E. Utah, then between the Eastern escarpment of 

 the Unita range and the Green River into the Washakie Beds of S. W. 

 Wyoming, the most important result geologically being that the Brown 

 Park deposit is found to be of much later age than the Unita. Bashford 

 Dean, Ree. Sec. 



III. Personal -Notizen. 



Necrolog. 



Am 26. November 1895 starb in Isleworth (Middlesex) George Edward 

 Dobson, bekannt durch seine monographischen Arbeiten über Chiropteren, 

 ïnsectivoren und Nager. Er war am 4. September 1844 geboren. 



Drnck von Breitkopf & Härtel in Leipzig. 



