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it is broad; above, on the outer side, it is produced into a strong 

 pointed process directed forward, broad at the base, and tapering 

 towards the apex, as long as the joint itself, and reaching forward to 

 one third of the length of the lamina; this process has a depression 

 towards the extremity, which is curved somewhat outwards and 

 downwards. The lamina is somewhat longer than the two preceding 

 joints together, the bulbus oviform, much swollen and uneven be- 

 neath at the base; at the extremity it seems to run out into two 

 points or spines. 



The chief difference between the females appears to consist in 

 the cephalothorax of G. Incifuga being more convex in front, that of 

 G. montana more strongly flattened: in G. Incifuga the back of the 

 cephalothorax begins at a good distance behind the posterior row of 

 eyes to incline convexly downwards (and forwards), but in G. mon- 

 tana on the contrary it is straight almost up to the posterior lateral 

 eyes: this makes the head, when viewed from before, seem in G. 

 Incifuga to be transversely and uniformly convex behind the posterior 

 central eyes, which are posited considerably lower than the highest 

 point of the pars cephalica, whereas in G. montana the head is 

 much flattened behind the posterior eyes, so that the middle pair 

 are situated almost as high as the highest part of the head. The 

 vulva in G. Incifuga is almost Y-formed; it consists in fact farthest 

 back of a little fovea, which in front sends out two diverging lobes 

 or furrows, which enclose a large, thick, tongue-like, backward- 

 directed, reddish brown, transversally-striped cylinder, on each side 

 of the apex of which , against the wall of the fovea , appears a red- 

 dish brown protuberance; in the extreme posterior portion of the 

 fovea is usually a little V- or Y-formed elevation. In G. montana 

 the vulva forms an almost oviform or heart-shaped fovea, the anterior 

 border of which is elongated into a similar, though somewhat smal- 

 ler, process, on either side of which the fovea forms a pair of pro- 

 jecting lobes; here also are found a couple of small elevations for- 

 ming at the posterior extremity of the fovea a little V or Y. 



In G. Incifuga the thighs are of a lighter colour than the 

 patellae and tibiae, generally reddish; in G. montana they are of the 

 same colour as the patellae and tibiae (having at most a yellowish 

 spot on the inner side), and having no tendency to red, but are black 

 or brown like the cephalothorax. The coxai of G. montana are 

 however most frequently paler than the rest of the legs, the tarsi 



