159 



Schriften der Konigliclien Physikalisch-okonomischen Gesellschaft zu Kon- 

 igsberg. Zweiter Jahrgang, 1861. Zweite Abtheilung. 4to. Pampb. 



Verbandlungen der Kaiserlich-Koniglichen Zoologiscb-Botanischen Gesells- 

 chaft in Wien. Jahrgang, 1861. xi Band. Svo. 



Denkschriften der Kaiserlichen Akademie der Wissenschaften. Zwanzigster 

 Band. 4to. Wien, 1862. Sitzungsberichte. Band 44. Heft 4, 5. 1861. Band 

 44. Heft 4, 5. 1862. Svo. Wien. 



Journal of the Koyal Geographical Society. Vol. xxxi. London, 1861. 



Proceedings of the Koyal Geogi-aphical Society of London. Vol. v. No. 5, 



1861, and Vol. vi. No. 3, 1862. 



Quarterly Journal of the Geological Society. Vol. xviii. Part iii. Lon- 

 don, Aug. 1862. 

 Proceedings of the Royal Horticultural Society of London. Vol. ii. No. 1-3, 



1862. Also, Nos. 6, 7, 8, 9 to 31 of Vol. i. 



Journal of the Royal Dublin Society. Nos. 20-23. 1861. 



Proceedings of the Royal Society. Vol. xi. No. 47. 8vo.' Pamph. Lon- 

 don. 



Canadian Naturalist and Geologist. Vol. vii. No. 3, June. No. 4, August, 

 1862. Montreal. 



Annals of the Botanical Society of Canada. Vol. i. Part iii. 4to. April, 

 1861 to Feb. 1862. 



Proceedings of the American Philosophical Society. Vol. ix. No. 67. 8vo. 

 Pamph. Philadelphia, 1862. 



Silliman's American Journal of Science and Arts. No. 101, for Sept. 1862. 



Annals of the Lyceum of Natural History of New York. Vol. vii. Nos. 

 10-12. June, 1861. 



Proceedings of the Academy of Natural Sciences of Philadelphia. No. 5, 

 April and May, No. 6, June, 1862. 



Proceedings of the Entomological Society of Philadelphia. May, June, and 

 July, 1862. 8vo. Pamph. By exchange. 



Annals and Magazine of Natural History. Vol. x. Nos. 54-57. June — Sept. 

 1862. London. From Courtis Fund. 



Genealogical Dictionary of the First Settlers of New England. By James 

 Savage. Vols. iii. and iv. Svo. Boston, 1862, Deposited by Republican Insti- 

 tution. 



October 1, 1862. 



Vice-President Jackson in the chair. 



Mr. A. Agassiz gave an account of a new species of Arachnactis 

 Sars, whicli is found swimming in large numbers near tlie surface of 

 the sea, at night, during the last part of September. It is of a pale 

 ochre color, and differs from the Norwegian species by its size, the 

 length of the marginal tentacles, the arrangement of the row of 

 tentacles round the mouth, and the manner in which it moves. On 

 account of its great resemblance to the larva of our common star- 



