396 



of the base of which is of a globular form, much projecting 

 inwards and backwards ; and at its fore extremity on the outer 

 side is a strong curved, tapering, sharp-pointed spine, whose 

 point is concealed beneath the fore extremity of tho digital 

 joint. 



The falces are moderate in length and strength, straight, 

 vertical, and considerably overhung by the fore extremity of the 

 cephalo-thorax. 



Tho abdomen is shining greenish-black, clothed with slightly 

 goldon greenish-yellow hairs. Tho fore part of the upper side 

 has a marginal curved line formod by white hairs, continued on 

 each sido backwards for somo distance ; four similar spots form 

 a largo quadrate figure near the middle, with sometimes 

 anothor spot on each sido near the base of the spinners. 



Those spots and markings are very liable to obliteration in the 

 male by tho white hairs being rubbed off. The female is lighter 

 coloured than the male, and her palpi are yellow. 



This is an abundant spider in some parts of Dorsetshire, 

 especially in tho Island of Portland, in the months of Juno and 

 July, whoro it may be found actively jumping about on low 

 plants and herbage in bright sunny weather. It appears to be 

 widoly distributed in Great Britain. 



The figures in Mr. Blackwall's work are certainly of this 

 species, as also is the description of tho female ; but the descrip- 

 tion of the male is undoubtedly of another species, most prob- 

 ably of Heliophanus flavipes, Koch. 



HELIOPHANUS EXPERS. 



Salticus expers, Cambr., Trans. Linn. Soc. xxvii., p. 401, pi. 

 liv., No. 5. 



Heliophanus expers, Sim., Monogr. des Attidos d'Europe, 

 p. 232. 



This spider is rathor larger than Heliophanus cupreus, the male 

 measuring 2J lines in length. 



