179 



England, with which Cambridge has favoured me, and which he calls 

 1). se.ricr.ns Blackw., belongs however to an entirely peculiar though 

 to D. 4-punctatus nearly related species, which 1 call D. Black- 

 voallU. In cf of this species the tibial joint of the very slender palpi 

 is rather shorter than the patellar, not longer than broad at the 

 extremity, with a blunt corner at the extremity, below, and a tolerably 

 shmder, pointed process at the apex on the outer side: that process 

 is not more than half as long as the joint itself, directed forward 

 and slightly outward, with the point itself bent somewhat inward 

 and downward; the lamina (tarsal joint) is as long as the patellar 

 and tibial joints together and as the tarsus of the 1 st pair, narrower 

 than its tibia and much narrower than the mandibles, something more 

 than twice its own breadth in length: the bulbus is pointed in front. 

 The interval between the posterior central eyes is something more 

 than the eye's diameter, and than the interval between the anterior 

 central eyes; the anterior side eyes are oval. The mandibles are 

 gradually tapering towards their extremity, but little thicker than the 

 tibia; the colour of the cephalothorax aud legs more reddish brown. 

 In other respects the male seems to be in form and colour precisely 

 similar to D. 4-punctus d": the "shield" of the abdomen is con- 

 cealed by hair, the thighs of the two hind pairs of legs have each 

 3 spines above, their tibise none above (in this specimen); their pa- 

 tellae have one spine. The length of the cephalothorax is 4'/ 2 mil- 

 lim., that of the 4 th pair of legs 13, that of the 1 st pair 9 1 /, mil- 

 lim.; the metatarsus of the 4 th pair is visibly longer than the tibia. 



In a female of Drassus Blackwallii n., which I also have received 

 from Cambridge, the vulva has the form of a small, pale brown, oval 

 area , which somewhat behind its centrum exhibits a very small oblong 

 fovea , the transversal diameter of which is not so large as the diame- 

 ter of the tarsi; the tibiae of the 3 th pair have a spine also above (in 

 this specimen). The four posterior legs have 3 spines above, as in D, 

 4-punctatus, which also the female, as far I can see, perfectly resem- 

 bles: the legs are however comparatively shorter. 



In D. 4-punctatus cT the tibial and patellar joints of the palpi 

 are about equally long, a little longer than their breadth at the 

 apex (seen from the inner side); the tibial joint has at its apex on 

 the under side a strong corner; its outside is, towards the extremity, 

 drawn out into a very coarse and strong process, which at its root 

 is about half as broad as the joint itself, at least as long as the 

 whole joint, curved inwards and slightly upwards, tapering more 



