liii 



many British spiders, first described by Mr. Blackwall and himself 

 other than the names they bear in the works of those authors ' 

 Various new species of Drassides and of Erigone have been 

 figured and described by the same author in the 'Ilhistrated 

 Proceedings of the Zoological Society ; ' also some new genera and 

 species from Australia, from Natal, and from Brazil, in the 

 'Annals of Natural History' (No. 81, September). Among those 

 from Australia is a remarkable species (Salticus volans), the 

 abdomen of which is furnished on its upper surface wit'li an 

 epidermis, extending laterally considerably beyond the width of 

 the abdomen, capable of being depressed and folded round the 

 latter, or elevated and expanded to its full extent, after tlie 

 manner of wings ; thus constituting "lateral flaps or a^jpendages," 

 serving *' as supporters to sustain the length of their leaps." 



M. Eugene Simon compares these flaps to a " parachute," made 

 available in springing from tree to tree (Proc. Ent. Soc. Fr., 

 December 11, 1874). 



M. Eugene Simon has also pubHshed the first volume of an 

 important faunistic work on ' Les Arachnides de France,' 

 illustrated by three plates. The author proposes to furnish a 

 figure of each genus, with anatomical details of those difficult to 

 determine. This volume contains five families of Araneidea, — 

 the EpeiridiB, Uloboridse, Dictjaiidfe, Enyoidre, and Pholcidro. 

 The second volume, to be issued shortlj^ will comprise the 

 families Urocteoidpe, Agelenidas, Thomisidae, and Sparassidfe. 



Figures and descriptions, by Mr. A. G. Butler, of five new 

 species of harvest-spiders, belonging to the genus Gonj-leptes, 

 from South America, in the collection of the British Museum, 

 acquired since the publication of his monograph of this genus, 

 have appeared in the 'Journal of the Linnean Society' (No. 58). 



The first part of a " Monographic Ptevision and Synopsis of the 

 Trichoptera of the European Fauna," by Mr. Robert M'Lachlan, 

 has just been issued, containing five plates of elaborate structural 

 details, illustrating the Phryganeidte and portion of tlie Limno- 

 philid^e. The author proposes to extend the geograpliical limits 

 of his work (with certain exceptions) to those outlying regions of 

 Asia and Africa comprised in the first of Dr. Sclater's two great 

 divisions of the temperate and boreal parts of the Northern Hemi^- 

 sphere, under the denomination of " Pala}arctic " and "Nearctic;" 

 the former comprehending all Europe and its islands, Algeria on 



