STUDIES IN AI'STHAI.IAX AKANKIH.* RAINROW. 259 



were four in iinmber, namely: — Hexat Iielefe, Bi'Hcliytlielese, 

 Macrotlieleff*, and Atracea^, and to these are now added tlie two 

 herein referred to. liehiw, 1 give a key which will, I hope, be 

 of assistance to students. Hexathelea? belontjiiio', appai-enth", 

 exclusively to New Zealand, is not included. The key is as 

 follows- - 



A — No teeth on outer margin of falx slieath ; tai si nnbespined ; 

 first two pairs scopulated ; metatarsi of same especially 

 so ; front row of eyes straight in Jlracliijf/iele, Auss., 

 otherwise procurved, rear row recurved ; sternal sigilla 

 moderately large and marginal ; superior mammilljie 

 usually not exceeding half the length of cephalothorax ; 

 inferior mammillae close together JlrKcIn/flirhvp. 



B — No teeth on outer mai'gin of falx-sheath ; tarsi (except in 

 Porrhothele. Sim., New Zealand) bespined, no scopulje 

 present; front row of ej'es straight or vei'y slightly pro- 

 curved (Pnrrhothele, Sim.J or distinctly procui-ved (titein/- 

 j7rocer».'', Sim.), rear row i-ecurved ; sternal sigilla moder- 

 atel}^ large and mai-ginal ; superior mammillfe at least not 

 much shorter than length of cephalothorax, infei'ior 

 mammillae widely separated, about four times their 

 transverse diameter apart Macrothelerp. 



C — Both margins of falx-sheath armed with teeth, together 

 with an intermediate row at base ; tarsi bespined, no true 

 scopulse present; front row of eyes slightly procurved 

 (Atrax., L. Koch) or straight (Hadroinjche, L. Koch), rear 

 row recurved ; sternal sigilla large, not marginal ; superior 

 mammillae shoi't scarcely exceeding two-fifths the length 



of cephalothorax, inferior mammillas close together 



Atyiii'eo'. 



D — Both margins of falx-sheath armed with teeth, together 

 with an intermediate double row running almost the entire 

 length; tarsi bespined, no true scopulre present; front 

 row of eyes straight on its front line when viewed from 

 side, and recurved on its rear line when viewed from the 

 same angle, rear row recurved ; sternal sigilla large and 

 sub-marginal ; superior niammilhe one-half the length of 



cephalothorax; inferior mammilias close together 



Tseudatraceci?. 



