ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 141 



spores lying dormant during the rainy season. An important character 

 of this species is the form of the elaters, which are very small, short, 

 cylindric, straight, or occasionally slightly curved, with very obtuse 

 ends and a single feeble spiral. 



Fissidens.* — J. A. Wheldon describes Fissidens pusillus var. Wilsoni, 

 a new variety, and indicates the points of structure in which it differs 

 from other varieties of F. pusillus and from F. inmrvus and F. viridulus. 

 He discusses the systematic value of the inflorescence of mosses, and, in 

 view of its variability, he is inclined to regard with suspicion the status 

 of species which are founded mainly upon the position of their 

 inflorescence. As to the morphological meaning of the anomalous leaf 

 of Fissidens, he is in agreement with the interpretation which 

 E. S. Salmon put forward in 1899 upon evidence furnished by the 

 structure of the vascular tissue of the costa. 



Psilopilum cavifolium.t — I. Hagen shows Polytrichum cavifolium 

 Wils., an Alaskan moss in Seemann's Botany of H.M.S. 'Herald' (1<S52), 

 to be identical with Caiharinea tschuctschicaQ. Miill. (1883) in the entire 

 margin of its leaves, the narrow nerve bearing few lamellge, and the 

 almost apiculate tips of the leaves. The plant must be called Psilopilum 

 cavifolium. 



Exotic Mosses. J— G. Roth, in a supplement to his "Aussereuro- 

 piiischen Laubmoose," gives diagnoses in German of the seven species 

 of Andresea described by Brotherus, published with Latin diagnoses in 

 " Bibliotheca Botanica,'' Heft 87. They were collected by Th. Herzog 

 in the Bolivian Andes. Three other species previously published are here 

 described. Figures of the structure of each species described are given. 



Dalmatian Liverworts. §—V. Schiffner publishes the results of his 

 study of the Hepaticte of Dalmatia, founded on J. Baumgartner's 

 collections in all parts of that region. He records only eighty-seven 

 species, due to the scarcity of water and woodland and the nature of 

 the soil, which is not favourable for Hepaticse. He discusses ecological 

 problems, and then gives a systematic list of species, with critical notes 

 on structure, etc. 



V. Schiffner || also discusses the Hepaticse collected by A. Latzel in 

 South Dalmatia and the neighbouring parts of Herzegovina, particularly 

 near Ragusa, Mount Orjen (1895 m.). The new species are Riccia 

 Latzelii, related to R. Bisrhoffii, but differing in habit ; and Cephalosiella 

 Latzeliana, with perianth-mouth deeply cleft into several lobes with 



* Journ. Bot., liv. (1916) pp. 317-22. 



t Bryologist, xix. (1916) p. 70. 



: Hedwigia, Ivii. (1916) pp. 257-62 (1 pL). See also Bot. Gentralbl., cxxxii. 

 (1916) p. 442. 



§ Oesterr. Bot. Zeitschr., Ixvi. (1916) pp. 1-21 (figs, in text). See also Bot. 

 Gentralbl., cxxxii. (1916) p. 352. 



II Verh. k.k. Zool. Bot. GeselL, Ixvi. (Wien, 1916) pp. 186-201 (figs.). See also 

 Bot. Gentralbl., cxxxii. (1916) p. 358. 



