Geology and Natural History. | 235 
development and metamorphosis had not been observed. It is, 
therefore, very gratifying to have this important point settled 
so soon and so satisfactorily. Mr. Agassiz gives an excellent 
Annuloids.” The plates are excellent and illustrate well both the 
external appearance and anatomy of the Tornaria-stage, the young 
Balunoglossus, and the adult. 
his worm is of large size when mature, and lives in the sand at 
low-water mark. It occurs on the sandy shores of southern New 
Balanogilossus, and judging from the description, it is most likely 
identical with the B. Kowalevskii, so well described and illustrated 
y Mr. Agassiz in the memoir before u ok ¥. 
13. Journal of Restarches into Natural History and Geology of 
the Countries visited during the voyage of H. M8. B 
the world, under command of Capt. FrrzRoy, R.N. By Cartes 
Darwin, M.A, F.R.S., author of Origin of Speciés, etc. Ne 
edition, pp. 519, 12mo. New York, 1871. (D. yoni & 
3 ; : 
thirty years ago, when it first made its now famous author a 
familiar name to all naturalists and lovers of nature, only the 
elder portion of our readers can remember. ains a classic 
among journals of scientific travel, as charming to-day as ever, 
and with the advantage of a few later touches by the author. 
14, Note on the Dates of some of Prof. Copes recent fapers, 
by 0. C. Marsu.—The Proceedings of the American Philosophi- 
cal Society, vol. xii, No. 89, just issued (Feb. 6th, 1873), contain 
- ; gy oceedings of the Academy of Natural Sciences of Philadelphia, vol. vi, 
: ? 3. 
