426 ON SOME R<^RE ARACHNIDS 



sloping, and that the figure they form is "in general some- 

 what broader in front," whilst in hicornis " it is exactly 

 quadrate or even slightly broader behind." The difference in 

 this respect is however very slight. If any ocular difference is 

 needed it would be better to take the relation of the posterior 

 centrals. \w. gibhosus these are much more than one diameter 

 apart, whilst in dromedarius the interval is only one diameter 

 or less. According to VVestringj the central eyes in each case 

 form an exactly quadrate figure, whilst the ocular area is in 

 gibhosus black and very prominent, and in dromedarius reddish 

 brown and low. These ocular arrangements are, however, of 

 very slight importance compared with the great dissimilarity 

 of the vulvse of the two species. They may, however, be 

 useful in dealing with immature specimens. 



The LEGS are yellowish brown, very richly splashed and 

 annulated with dark brown. The coxae, trochanters, and 

 patellae are in particular very much suffused with brown. 



The PALPI are coloured like the legs. 



The VULVA is characteristic and very different from that of 

 A. gibbosus. I here figure it. It must be, however, very like 

 \h2ii oi Araneus 6Vr/V/z// (Hahn), a species not yet found in 

 Britain. This is figured by Dr. de LessertJ. The species, 

 however, appears to resemble gibbosus in the shape and 

 direction of its abdominal tubercles. Araneus dromedarius 

 (Walck.) has a wide continental range, occurring in France, 

 the Channel Islands, Switzerland, Germany, Hungary, and 

 Sweden. The Rev. O. P. Cambridge has seen and recognised 

 my specimens. 



Araneus Sturmii (Hahn). (Plate X., figs. 7-7d). 



I have for some time been accumulating examples of 

 Epeira agalena (Bl.) in the hope that amongst them I 

 should find examples of A. Sturmii (Hahn) as well as A. 

 triguttatus (Fabr.). Lately I carefully examined them all and 



t Aranefe Suecicse, pp. 44-47. 



X Observations sur les iraigaees du Bassin du Leman, GeucTe, 1904, pi. v., fig. 25. 



