2 Ccel. 
XVI. CCEL ENTERAT A. 
The Hydromedusse of North America have been monographed by 
Hargitt (59). 
Nutting (97) furnishes collectors in the "Woods Holl region with a 
practical and concise means of identifying the spp. occurring in the area, 
Studer (119) contributes to our knowledge of the Alcyonaria from the 
North Atlantic, and of the Madreporaria from the Pacific Islands. 
Hartlaub (61) contributes an exhaustive monograph of the genus 
Sertularella in which he gives the history of the species, with synonymy, 
and structure. It includes some instructive tables. 
Kassianow gives us a study of the nervous system of the Leucernaridce 
(69). 
Several papers have appeared during the year on the subject of re¬ 
generation, showing that the process—as has already been demonstrated 
in Planarians— is also very widely distributed in this class and is carried 
to a great extent; though the regenerating fragment must not be below a 
certain size. See Morgan (89 & 90), Dresch (37). 
Carlgren (20) gives some interesting information about Actiniaria 
rearing their young in brood pouches. 
Agnes Kelly (70) discusses the skeletal secretions of Coelenterates 
and of other organisms from the point of view of their mineralogical 
composition. 
Hargitt’s paper (58) deals with some peculiarities of variation. Amongst 
other things he shows that variability is greater in tentacles than it is 
in other organs. 
Mayer (83) also has a paper on the variation of a “newly-arisen 
species of medusa.’ 5 
The number of Titles is larger than usual but this is partly due to the 
Recorder last year being obliged to omit examination of a certain number 
of periodicals in consequence of his departure for Ceylon. 
Some change has been made in the arrangement of the Record ; the 
object being to simplify it both for the student and for the Recorder. In 
making these changes I have taken advantage of the opinions of some of 
our best authorities on the class. 
TITLES.* 
1. Allen, E. J. & Todd, R. A. The fauna of the Exe Estuary. J. Mar. 
Biol. Ass. vi. [ Codenterata , p. 317.] 
4. Bedot, M. Materiaux pour servir h, l’histoire des Hydro'ides. l re . 
periode. Rev. Suisse Zool. ix, pp. 379-515. i. Historical and Bib¬ 
liographical. ii. Systematic, pp. 421-515. 
5. Bell, R. Fossiliferous rocks of Baffin Land. Rep. Geol. Surv. 
Canada xi, p. 20m. [Upper Silurian genera of corals mentioned.] 
6. Berger, E. W. Physiology and histology of the Cubomedusce , in¬ 
cluding Dr F. S. Conant’s notes on the physiology. Mem. Johns 
Hopkins Univ. iv, pp. 1-84, 3 pis. 
7. Bergeron, J. Etude des terrains paleozoiques et de la Tectonique 
de la Montague Noire. Bull. Soc. geol. France xxvii, pp. 617-678. 
* An asterisk prefixed to a quotation indicates that the Recorder has not seeu 
the Journal or Work referred to. [Nos. 2 & 3 are wanting as the result of an 
oversight.] 
