95 



kugeln der ersten Entwicklungsstadien des Siredon-'EÀes (in der Ein- 

 zahl neben dem ruhenden Kern und doppelt vor der Theilung der 

 Kerne) mit einem hier und da nachweisbaren Centralkörperchen. An 

 kleineren Furchungskugeln konnte er keine Attractionssphäre wahr- 

 nehmen, doch giebt er der Meinung Ausdruck, daß sie unzweifelhaft 

 auch hier vorhanden und nur durch Dottergranula verdeckt seien 

 (Anat. Anz. 4. Bd. No. 5). — Auch die von Kupffer (1875) in den 

 Leberzellen des Frosches beschriebene »Centralmasse«, von welcher 

 Netzfäden nach der Peripherie ausstrahlen, werde ich bei weiteren 

 Untersuchungen im Auge zu behalten haben (vgl. auch Lan gen- 

 der ff 's Abbildung eines Schnittes durch die mit Sublimat behandelte 

 Leber von Ratia esculenta im Arch. f. Anat. u. Physiol. 1886. Physiol. 

 Abthlg. Supplementband, Taf. XVIII Fig. 1). 

 Greifswald, 5. Februar 1890. 



III. Mittlieilimgen aus Museen, Instituten etc. 



1. Zoological Society of London. 



4th February, 1890. — The Secretary read a report on the additions 

 that had been made to the Society's Menagerie during the month of January 

 1890. — A communication was read from Mr. W. K. Parker, F.R.S., 

 containing an account of the morphology of the Hoatzin [Opisthoconms cris- 

 tatus). The author treated of the early stages of the development of this 

 Reptilian Bird, and its shoulder-girdle, sternum, and hind limbs. — A com- 

 munication was read from Mr. A. D. Bartlett, containing observations on 

 Wolves, Jackals, Dogs, and Foxes. Mr. Bartlett's remarks tended to show 

 that all the varieties of Domestic Dogs owe their origin to Wolves and Jackals, 

 and that the habit of barking has been acquired by, and under the influence 

 of, domestication ; also that the Dog is the most perfectly domesticated of 

 all animals. — A communication was read from Mr. G. E. Dob son, F.R.S., 

 containing a synopsis of the genera of the family Soricidae. The author re- 

 cognized nine genera, and divided them into two subfamilies. New methods 

 of defining the genera were introduced, each genus was briefly characterized, 

 and remarks on certain genera, not admitted in the synopsis (although hither- 

 to generally recognized), were appended. — Mr. F. E. Beddard read a 

 paper containing observations upon some species of Earthworm of the genus 

 Perichaeta. — A communication was read from Mr. J. M. Leslie, F.Z.S., 

 containing notes on the habits and oviposition of the clawed Aglossal Frog 

 (Xenopus laevis) , as observed at Port Elizabeth, Cape Colony, where this 

 species was said to be of ordinary occurrence. — Mr. Oldfield Thomas 

 read an account of a collection of Mammals from Central Vera Cruz, Mexico, 

 made by a scientific expedition organized by the authorities of the Mexican 

 Museum, under the superintendence of Dr. F. Ferrari-Perez. The collection 

 consisted of about 100 specimens, belonging to 21 species. Amongst these, 

 two (a Hare and a Squirrel) were described as new, and proposed to be called 

 Sciurus niger melanonotus and Lepus verae-crucis . — P. L. Sclater , Secretary. 



