320 Mr. B. I. Pocock on new Genera 



V, Median eyes smaller ; inferior caudal keels re- 

 tained, 

 a^ Carapace and palpi not so flat ; Land coarsely 

 reticulated above ; femora of legs granular 



externally validus (Thor.). 



b'^. Carapace and palpi flatter ; hand smooth and 

 only finely reticulated above ; femora ex- 

 ternally smooth , Icevipes, sp. n. 



Chiromachus, gen. nov. (PI. XIV. fig. 4.) 



Allied to Ophthacanihus and Opisthocentrus^ but with the 

 lower surface of the feet studded irregularly behind with long 

 stiff setoe ; the series of sette diverging and becoming regularly 

 arranged upon each side of the socket for the inferior claw. 



In Ojnsthacanthus and Opisthocentrus the feet are armed 

 below with two distally diverging series of spines. 



Type, C. ochropus (G. Koch), of which the synonymy is, I 

 believe, as follows : — 



CMromachus ochropus (C. Koch). 



Ischnurus ochropus, C. Koch, Die Arachn. iv. p. 69 (1838), cJ. 

 Ischnurus asper and chrysopus, Peters, Mon. Ak. Wiss. Berlin, 1861, 

 pp. 613-614, § . 



This species appears to be an East-African form. The 

 British Museum has six examples from Zanzibar, two with- 

 out any history, and one which was brought from Round 

 Island, near Mauritius, by Sir Henry Barkly. 



lOMACHUS, gen. nov. (PI. XIV. figs. 5 and 6.) 



Allied to HormnruSy but difi'ering in having the lower sur- 

 face of the feet compressed and armed with a single series of 

 spiniform teeth. The lateral setffi, which are characteristic of 

 the feet in Honnurus, are fewer in number. 



Type, Hormurus Iceviceps (Pocock), from S. India. 



Subfamily Ueod acini. 



Genus UrODACUS, Peters. 



Urodacus, Peters, Mon. Ak. Wiss. Berlin, 1861, p. 511. 

 lodacus, Pocock, Ann. Mag. Nat. Hist, (6) viii. p. 245. 



Since establishing the genus lodacics, I have found that 

 the characters upon which it was based, namely, the longer 

 sternum and flat hand, can scarcely be regarded as of generic 

 importance, for an examination of recently received speci- 

 mens of U. rtovce-liollandice has shown that the length of the 

 sternum is liable to considerable variation, and the new Uro- 



