144 RECORDS OI-' THE Al'STRALIAX Ml'sKC.M. 



margins, wliich are not thickened. Anal sternite triangular 

 with rounded apex ; its length is about half of its breadth. 

 Sterna of other segments transversely snlcate, the sulci are 

 comparatively few. Stigmata small. 



Legs rather long (3.20 m/m), tliougli not quite as long as the 

 diameter of the body, slender, with but one bristle below on 

 the two proximal joints, two on the third, three on the 

 fourth, five on the fifth, and ten in two rows on the last 

 (twenty-sixth pair of legs). 



Male : — Tarsi not padded. Ventral surface of second joint 

 of legs feebly excavated. Coxas of the third, fourth, and fifth 

 pair produced ; the ventral surface of the two following joints 

 nodular. 



Copulatory appendages : — Anterior gonopods (PI. xviii,, figs. 

 72, 73) ; basal part of the venti'al plate (V.J triangular, with 

 straight lateral margins ; its length not quite half it bi'eadth at 

 the base ; upper angle produced into a spear-head-shaped 

 process about as long as the basal ])art. Coxal expansion 

 angulai", acute distally, as long as the ventral plate oi- even 

 perhaps a trifle longer; the coxa is produced proximally into a 

 short endoskeletic process (csl-.) about as long as half the 

 traclieal stalk. Tibia in a line with the femur, rather long 

 pai-allelsided and narrowed distally, tipped with a small sub- 

 triaTigular ])late, with rounded a])ex, which reaches beyond the 

 summitof the ventral plate, l^osteiioi' basal plate (r. 2.) sub- 

 triangular, emarginate latei-ally; apex l)lunt. Tracheal stalks 

 (ts.) long, slender, crooked as usual. 



Posterior gonopods (PI. xviii., fig. 74) two jointtnl. L'nt'or- 

 tunately the main outer branch is broken off on both gonopods. 

 The inner branch is ribbon-shaped ; its lamellar, neatly undulate 

 mai'gins are .somewhat curled up towards the outer brancli, 

 thus forming a longitudinal gi'oove. The seminal duct seems 

 to open at the bottom of the fork of the distal joint, in be- 

 tween the two branches. Tracheal stalk long, slender, cui'ved 

 distally. 



Female: — (Jround coloui- grey-brown (evidently altered); 

 labrum, anteniue, the margins of all segments, the apex of the 

 last and the valves dull ochraceons. A broad band of the same 



