250 Mr. R. I. Pocock on the Genera and 



a. Legs short, posterior three pairs very ro- 



bust, with their distal segments strongly 

 spined ; fourth leg subequal to third in 

 lengtli, -u'itbout claws, its coxa and tro- 

 chanter (three basal segments) as long 

 as the rest of the limb and furnished 

 with only three malleoli * (according to 

 Simon) Fam. Hexisopodid^, nov. 



b. Legs long or short, fourth pair at most 



weakly spined and considerably longer 

 and stronger than the others, armed with 

 two claws t, its coxa and trochanter 

 much shorter than the rest of the ap- 

 pendage and bearing five malleoli on each 

 side in the adult t. 

 a}. Abdomiuiil tracheal stigmata lying be- 

 hind and under the posterior margin of 

 the second and third sternal plates and 

 protected by comb-like plates; basal 

 segment of claws hairy ; tarsus of palp 



freely movable Fam. Galeodid^ (s. s.). 



i^. Abdominal tracheal stigmata visible 

 upon the posterior margin of the second 

 and third sterna, lying in a triangular 

 excision of the plates ; claws free from 

 hairs ; tarsus of palp immovably fused 



to the protarsus ' Fam. SoLPrGiDjE (s. s.). 



a*. Anal segment small, subcircular, the 

 anal aperture extending from its in- 

 ferior almost up to its superior edge. Subfam. So!pvgin(s, nov. 

 b'. Anal segment of large size, trans- 

 versely elliptical, the anal aperture 

 not extending more than halfway 

 from its lower border towards the 

 dorsal border § Subfam. Hhaffodincp, nov. 



* I have applied the term malleolus to the racquet-shaped organs 

 situated upon the basal segments of the fourth leg. 



t The genus Gnosipjms, Karsch, represented by one species from 

 Egypt, and probably belongirg to the Solpugidte, is described as having 

 no claws on the legs of the fourth pair. It is also said to be peculiar in 

 that the coxa of this limb is nearly as long as the femur. But a glance 

 at the figure of this appendage shows that Karsch has mistaken the, coxa 

 lor the trochanter. As a matter of fact, the trochanter is scarcely longer 

 than usual ; but, if the figure is to be trusted, it presents the unique 

 character of being undivided instead of bisegmented as in the rest of the 

 order. The segment which Karsch refers to as the trochanter is the 

 segmented basal end of the femur. 



X ? Zoinbis of Simon, based upon a speciujen from Jaffa, and said to be 

 characterized by the possession of only three pairs of malleoli, three 

 tar.^al segments on the third and fourth legs, and only a pair of setae on 

 the ocular tubercle. But, as is explained below (p. ^58), tlie number of 

 malleoli, of tarsal segments, and of ocular setse is often but an indication 

 of immaturity, and that it is probably so in the case of Zombis may be 

 inferred from the fact that the type, pvsiola, is only 9 millim. long. 



§ First pointed out by Hansen, Ent. Meddel. iv. p. 191. 



