432 Miscellaneous. 



by Mr. Alder to a well-marked British form of the genus. See his 

 " Catalogue of the Zoophytes of Northumherland and Durham," in 

 vol. iii. part 2 of the * Transactions of the Tyneside Naturalists' 

 Field Club.' See also page 356. vol. xviii. 2nd series, of this perio- 

 dical. 



I am, Gentlemen, 

 Queen's College, Cork, Your obedient Servant, 



April 10, 1860. J. REAY GREENE. 



On the Genus Huxleya. By J. REAY GREENE, Esq. 

 To the Editors of the Annals of Natural History. 



GENTLEMEN, In a paper by Mr. Arthur Adams " on some new 

 Genera and Species of Mollusca from Japan,'* published in the last 

 Number of this Journal, the title of Huxleyia has been conferred by 

 the author on a new genus of Lamellibranchiata (vide p. 303). 



Mr. Adams does not seem to be aware that the name Huxleya 

 has already been given to a genus of Polyzoa, See " Notes on two 

 new British Polyzoa," by Fred. D. Dyster, F.L.S.," in the < Quarterly 

 Journal of Microscopical Science/' 1 858. 



I am, Gentlemen, 

 Queen's College, Cork, Your obedient Servant, 



April 10, 1860. J. REAY GREENE. 



On some young Hybrid Bears bred in the Gardens of the Zoological 

 Society. By A. D. BARTLETT. 



In the Bear-pit in the Gardens a male Black Bear of America (Ursus 

 americanus) has been kept for a long time with a female of the Eu- 

 ropean Brown Bear (IJrsus arctos). In the month of May these 

 bears were seen to copulate, and on the 31st of last December the 

 female produced three young ones ; which, when born, were naked 

 and blind, and about the size of a full-grown rat. 



The mother was seen to carry one of these young ones in her 

 mouth a day or two after they were born, and, as it disappeared, it is 

 supposed that she devoured it. Probably it was not healthy. The 

 other two remained and continued to grow, and at the age of five 

 weeks were as large as a common rabbit. Their eyes began to open 

 by this time ; they were covered with a short thick fur, and were 

 nearly black. 



On examining these young bears it was found they were male and 

 female, and the number and situation of the teats appears somewhat 

 remarkable. They have six teats, four of them placed in front be- 

 tween the fore legs, and two of them in the lower part of the abdo- 

 men. Another singular fact is, that the female during the time she 

 was suckling these young ones fed most sparingly, and rarely took 

 any drink. From the before-mentioned observations we may infer 

 that the period of gestation of the Bears is about seven months. 

 Proc. Zool. Soc. Feb. 28, I860. 



