28 Proceedings of the Royal Physical Society. 



to be said, is an " alien " not likely to be found outside 

 hot-houses and conservatories. If to the above number be 

 added those species included in our "Upper Forth" list 

 {Ann. Scot. Nat. Hist., 1897), which are not in the "Edin- 

 burgh" lists, and two or three taken by the late James 

 Hardy in the neighbourhood of Cockburnspath, it will be 

 found that the recorded Spider-fauna of the "Forth" area 

 comprises 220 species or thereby. Doubtless, a good many 

 more still remain to be discovered. 



Of the species here recorded, several^ are not only 

 additions to the local list but to the Scottish list as well, 

 thus greatly extending their known range in Britain ; while 

 some have been met with but a few times anywhere in these 

 islands. Nor are the present additions by any means 

 confined to the small, inconspicuous species (what may be 

 called the micro-araneida), seeing they include such fine 

 species as Chiracanthium carnifex, Philodromus rufus, Meta 

 menardi, and Pisaura mirahilis. 



In our original paper and first and second supplements, 

 we recorded Diplocephahts (Plcesiocrcerus) alpimos (Cb.) from 

 a number of localities.^ Since then the differences between 

 this form and the closely allied I), latifrons (Cb.) have been 

 more fully investigated by Mr Cambridge (cf. Proc. Dorset 

 Nat. Hist. Field Cluh, vol. xxiii., 1902, pp. 23-4), and a 

 re-examination of the specimens we preserved shows that 

 they belong to the latter form, and not to I), alpinus, which 

 must therefore be struck off our list. D. latifrons was 

 included in our 1899 supplement. 



As regards species already on the list, fresh localities for 

 many of the less common ones have been noted. Some of 

 the more interesting of these records are given in a separate 

 list at the end of this paper. 



We desire again to tender our best thanks to the Eev. 0. 

 P. Cambridge, F.K.S., from whom we have received, as 

 heretofore, invaluable assistance in the determination of a 

 number of our specimens. 



1 These appear to be Leptyphantes piiiicola, Lophomma herhigradum, and 

 Philodromus rufus. 



2 Proc. Boy. Phy. Soc, Vol. XII. pp. 573-4; Vol. XIII. p. 314; Vol. 

 XIV. p. 177. 



