ON SOME RARE ARACHNIDS 429 



organs of both male and female to triguttatus. In his figures 

 I think the male is drawn from Sfurmn, and the female from 

 triguttatus. He does not figure the vulva, and one of his 

 drawings of the palpus is useless. The other one, 242f., is, 

 however, most certainly that of A. triguttatus, and in it he 

 shows fairly accurately the critical part which I also figure. 

 Unfortunately this figure is by error assigned to E. sellers 

 (Walck.), the next spider on the plate. This mistake, how- 

 ever, is partly rectified in the explanation on the opposite 

 page. 



I have obtained Araneus triguttatus (Fabr.) in Devon, 

 Dorset, and Essex (Epping.) I have never seen it from the 

 north of England, the specimens so recorded by me| from 

 Hexham being really Sturmii. Araneus Sturmii (Hahn) I have 

 found in Northumberland, Cheshire (Delamere) and the New 

 Forest. Both species are obtained by beating, but while 

 triguttatus occurs usually upon gorse bushes, shrubs, and 

 deciduous trees, Sturmii is found upon Scotch firs and 

 spruces}. 



Both species have a wide continental distribution, Sturmii 

 being found in France, Germany, Switzerland, and Hungary 

 at all events. 



Prosthesima latitans (L. Koch). (Plate X., figs, ii, iia). 



On May 31st Mr. Wallis Kew showed me a flint pit at 

 West Wickham near Bromley in Kent, where Prosthesimae 

 abounded. These turned out to be P. pedestris (C. L. Koch), 

 P. Latreillii (C. L. Koch), and the present spider. Of the 

 last we got two adult males and four immature females. 

 The females had not properly developed vulvae, but each 

 epigynal area was quite unlike that of any other British 

 species. Underneath the thick white integument it was possible 

 to trace the epigyne of the present spider. The males were 

 adult and typical, and I here figure the palpus, as there is no 



t Spiders of Tynedale. Trans. Nat. Hist. Soc. Northumberland, Durham, and 

 Newcastle-upon-Tyne. New Series. Vol. i., p. 396. 



X Compare R. de Lessert. Observations sur les Araign^es du Bassin du Le'man, 

 Genfeve, 1904, p. 366. 



