272 ME. H. R. HOGG ON [June 4, 



Measurements in millimetres. 



Long. Broad. 



Cephalothorax .... 8| 7 



Abdomen 11 8 



Mandibles 3 



Superior mammillae 4, 3, 2^ = 9^. 



Pat. & Metat. & 



Coxae. Tr. & fern. tib. tars. 

 Legs 1. 3| 6| 6| 6 = 22| 



2. 3| 6± 6| G = 22| 



3. 3^ 6| 6| 7| = 24 

 Or 4, 3, 2, 1. 4. 3£ 7| 8* 9± = 29 



Palpi 3 5| 5| 3 = 17 



Group Atraceje. 



The two genera Atrax Cambr. and Hadronyelie L. Koch, which I 

 have detached to this group, differ considerably from either of the 

 two previous genera. 



The sternal sigillse are large and removed from the margin, and 

 the teeth on the falx- sheath are in two rows on interior and exterior 

 margins, with an intermediate row of small ones at the lower end. 



The superior spinnerets are short and the inferior even closer 

 together than in Brachytliele ; while the tarsal claws are pectinated 

 in one row across the claw as in Macrotliele, and the lip very thickly 

 bespined. 



Synopsis of Genera, 



Last joint of superior spinnerets longer than second, cylin- 

 drical and smooth Atrax Cambr. 



Last joint of superior spinnerets short and conical Hadronychc~L. Koch. 



Genus Atrax Cambr. 



Atrax Eev. O. P. Cambridge, Ann. & Mag. Nat. Hist. ser. 4, 

 vol. xix. (1877) p. 26 ; E. Simon, Ann. Soc. Ent. Fr. 1891, p. 302 ; 

 id. Hist. Nat. d. Araign. vol. i. (1892) p. 186. 



Type, A. robustus Cambr. 



Synopsis of Species. 



Front middle eyes more than their diameter apart, and 



distinctly less in their diameter than side-eyes of 



same row ; patella' of two rear pairs furnished with 



one or two spines ; all four pairs of tibiae bespined... A. robustus Cambr. 

 Front middle eyes less than their diameter apart, and 



about the same in diameter as the front side-eyes ; 



patellae of third pair furnished with numerous 



spines, fourth pair none ; and the front four tibiae 



without any A. modesta Simon. 



