ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 75 



nob constitute definite sori, but are distributed solitarily, terminally on 

 the veins ; there is no indusium, but hairs occur along the veins and 

 revolute margins of the pinnae. The sporangium is short-stalked, 

 globular, with oblique irregular annulus, interrupted at the stalk ; the 

 stomium is variable. The larger sporangia contain 12-16 large spores ; 

 the smaller, 26-32 small spores. Flaiyzoma has no close affinity with 

 Gleicheniaceae, though probably of common origin. A. G. 



Anatomy and Affinity of Deparia Moorei Hook.— John McLean 

 Thompson {Trans. Hoy. Soc. Edinh., 1915, 50, 837-56, 3 pis. and figs.). 

 An account of the structure of the sporophyte of this fern, and a dis- 

 cussion of the significance of the anatomy of its members. The phyletic 

 and systematic position are debated at some length, and the conclusion 

 is reached that the morphological characters described in the paper show 

 Deparia Moorei to stand high in the scale of ferns, and indicate for it a 

 Davallioid affinity. A. G. 



Anatomy and Affinity of certain Rare and Primitive Ferns.— 

 John McLean Thompson {Trans. Roy. Soc. Edinh., 1918, 52, 363-97, 

 7 pis. and figs.). An account of Jamesonia, Uavea and Trismeria, 

 Their structure is described ; and they are compared with Gymnogramme, 

 Cryptogramme^ Cheilanthes, Nothochlaena, Pellaea, Ceratopteris and 

 Plagiogyria. The anatomical and sporangial characters are held to 

 indicate for Jamesonia an ultimate origin from some Schizseaceous 

 source ; the same applies to Llavea, which is more advanced than 

 Jamesonia ; and as to Trismeria^ the conclusion is that it is not a distinct 

 genus, but an " Acrostichoid " Gymnogramme. A. G. 



Some Notes on Neurosoria pteroides (R. Br.) Mett.— W. Walter 

 Watts {Journ. Froc. Roy. Soc. N. S. Wales, 1919, 53, 49-57, 

 2 pis.). This fern, originally named Acrostichum pteroides by Robert 

 Brown, was assigned to Fhorolobus by Desvaux, by Mettenius to 

 Neurosoria n. g., by Moore to Gymnopteris or to Ch^lanthus, by Kuhn 

 first to Allosorus and later to Neurosoria, which genus Kuhn described 

 at some length in 1869. Watts now criticises Kuhn's description and 

 conclusions, and decides that Neurosoria should be placed in the 

 Oheilanthinae, falling into the group with thickened nerve-ends, but 

 with the sori occupying the whole of the upper nerve-branches, while in 

 Gheilanthes and Hypolepis the sori are confined to the nerve-ends, being 

 more or less confluent in Gheilanthes, and solitary at the base of a leaf- 

 sinus in Hypolepis. A. G. 



Prothallus of Tmesipteris tannensis. — A. Anstruther Lawson 

 {Trans. Roy. Soc. Edinb., 1917, 51, 785-94, 3 pis.). An account of 

 the discovery of the prothallus of Tmesipteris in Xew South Wales, and 

 of its structure. It is small, subterranean, saprophytic, characterized by 

 numerous long rhizoids, is light brown in colour (hence inconspicuous 

 in its habitat), without chlorophyll, associated symbiotically with a 

 mycorrhizal fungus. The antheridia are large and scattered, the arche- 

 gonia quite small and numerous ; and these organs, do not much 

 resemble those of Eqtiisetwn or Lycopodium. The description of the 



