ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 715 



be noted Phoneutisca, now nearctic ; Palmleptopem, which is related to 

 (Edalea and Leptopeza ; the genera Euthyneuriella, Meghyperiella, and 

 Parathalassiella. 



Nervous System of Larva of Corydalis cornuta.* — A. G. Hammar 



gives a detailed account of this. It is of a very generalised type. 

 There is a ganglion for practically every segment ; only in the last 

 abdominal segments is there a fusion, of two or possibly three ganglia. 

 The author deals with the central nervous system, in head, thorax, 

 and abdomen, and with the sympathetic nervous system, and gives a very 

 careful analysis. 



Genitalia as Indications of Relationship^ — W. Wesche gives a 

 number of illustrations showing the importance of a study of the 

 genitalia in connection with phylogeny. The male genitalia always 

 furnish specific characters, and in certain cases those of both sexes may 

 lie relied on as indices of wider relationships. 



5- Arachnida. 



Geographical Distribution of Oribatidae.J — C. Warburton notes 

 that these minute free-living vegetarian mites may be transported in 

 moss in hermetically-sealed tins from very distant localities, and that 

 it should thus be possible for a worker in Britain to build up an ex- 

 tensive knowledge of the geographical distribution of these forms. 

 Some of the facts he reports are very interesting. Himalayan material 

 contained twenty species (in twelve genera) and twelve of these species 

 were British. Yet there does not seem to be a single spider common 

 to England and India. British forms were obtained from Madagascar, 

 South Nigeria, Uganda, Madeira, Canada, British Guiana, and Hawaii. 



The most cosmopolitan of the Oribatidre are neither the most 

 primitive (to all appearance) nor the most active. The genus Oribata 

 is apparently the most specialised of the Oribatidse, and seems also to be 

 the most widely distributed, 0. alata being the most cosmopolitan of 

 all. Nothrus has all the appearance of a primitive genus, as its adults 

 often resemble the larva? of Oribata, but only one British species was 

 obtained from the localities noted. Hardly any representatives of the 

 large long-legged active mites of the genus Damceus have been re- 

 ceived from abroad, and the only known jumping Oribatid, Zetorchestes, 

 common on the Continent, has not even made its way to England. 



New Species of Kgenenia.§ — P. de Peyerimhoff describes K. his- 

 panica sp. n. from a cave in Aragon, and gives a useful comparison of 

 the six Mediterranean species of this remarkable genus. 



North American Lycosidae.|| — Ralph V. Chamberlin discusses this 

 family of wolf-spiders, or running spiders, and gives definitions of the 

 eight genera and descriptions of the species. The Lycosidae are among 



• Aim. Entom. Soc. America, i. (1908) pp. 105-27 (2 pis.). 



t Trans. Entom. Soc. London, 1908, pp. 295-305. 



t Proc. Camb. Phil. Soc, xiv. (1908) op. 532-4. 



§ Arch. Zool. Exper., ix. (1908) pp. 189-93 (2 figs.). 



|| Proc. Acad. Nat. Sci. Philadelphia, 1908, pp. 158-318 (16 pis.). 



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