ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 323 



•adding a simplified key to them, and figuring six of the species. The 

 •chief synonyms, the habitats, and distribution are given. 



Hepaticse of Puerto Rico.* — A. AY. Evans describes in full and 

 figures ten species of DrepanoUjeunea gathered by himself and others 

 in Puerto Rico. Four of the species are new. Historical, distributional, 

 .and structural notes on the genus are added. 



Two Egg-Cells in Mnium.f — W. C. Coker finds in an undeter- 

 mined species of Milium an archegonium which contained two well- 

 developed egg-cells of normal appearance. The extra one lay directly 

 over the other. In each case a ventral canal-cell had been cut off. 

 The writer suggests that the upper egg had been derived from the 

 lower neck canal-cell. 



British Mosses. J — R. Braithwaite publishes the penultimate part of 

 his British Moss-Flora, and describes 2?> species and figures 2C>. Three 

 ■of these form the completion of the genus Stereodon ; and the residue 

 are divided up among nine genera. Four of these genera are Hypna- 

 ceous ; three are Pterygophyllaceous ; and the remaining two belong to 

 the Neckeracere. 



Yorkshire Muscinese.§ — W. Ingham has compiled a complete list of 

 all the mosses and hepatics that have been gathered hitherto in the East 

 Riding of l r orkskire, together with their habitats and the collectors' 

 names. He records 228 mosses and 55 hepatics with numerous varieties 

 and forms. 



Ricciocarpus natans.|| — J. E. Bagnall records the occurrence of 

 this rare hepatic at Berkswell in Warwickshire, where it was found in 

 abundance by S. P. Bolton. It appears to have been gathered at only 

 seven other localities in Great Britain, but is less rare in Ireland. 



French Volcanic Muscinese.f ■ — A. Crozals has investigated the 

 peculiar moss-flora of Roquehaute (Herault), a small volcanic district 

 on the shores of the Mediterranean, and publishes a list of 74 mosses 

 and 26 hepatics. Among the latter are lo species of Riccia, also Riella 

 Battandieri and the rare Dkhiton perpusillum, previously known only 

 from Algeria. The two latter species have probably been imported by 

 migratory birds. Half the mosses noted are of the Pottiaceous type, 

 and no strictly calcicolous species are found. 



European Mosses.** — Th. Herzog publishes lists of the mosses 

 gathered by him in the course of 1901-2 in the Black Forest and the 

 Alps of Switzerland, Tyrol, and Bavaria, mostly at new localities. 

 There are three lists containing a total of 101 species. 



German Mosses.ft — J- Roll publishes a list of 19 species of Sphag- 

 num, subdivided into 80 varieties and very numerous forms, gathered 



* Bull. Torrey Bot. Club, xxx. (1903) pp. 19-41 (6 pis.). 



t Bot. Gaz., xxxv. (1903) pp. 136-7 (fig. in text). 



j ' British Moss Flora,' part xxii. 1903, pp. 169-200 (6 pis.). 



§ Journ. Bot., xli. (1903) pp. 115-126. || Tom. cit., p. 139. 



f Bev. Bryol., xxx. (1903) pp. 17-32. 

 ** Bull. Herb. Boissier, iii. (1903) pp. 149-54 

 tt Hedwigia, xlii. (1903) Beiblatt, pp. 24-8. 



