TllK .MYKIAI'ODA IN THK Al'S'l'IIAMAN MrSKUM I'.UOI.K M ANN. 95 



9 (10) — Gonopods divided into tliree branches ; posterior 

 branch not overlianging the femur proximal ly,oTadually 



tliinner, curled inside the orofan 



A. rdiiilniii-i, sp. nov. 



10 (9) — Gonopods divided into two branches ; posterior branch 

 with broad base, overhanging the femur externally, 



expanded distally on the outer surface of the organ 



.1. (Dirladosovia) etheridgei, sp. nov. 



AUSTKALIOSOMA FROGGATTI, gp. Ildf. 



(PI. xiv., figs. 8-12). 



(a) ^ type : length 47 m/m ; breadth of 12tli tergite 4.20 

 mm, of 12 th prozonite 3.10 m/m. 



(b) <? : length 48 m/m ; breadth of 12th tergite 4.30 m/m. 



(c) 5 : length 42 m/m ; breadth of 12th tergite 4.25 m/m. 



Ground colour, a very dark brown, reddish on the dorsal 

 surface and below the keels. Ventral side and the thi-ee 

 proximal joints of the legs yellow-brown ; the three distal 

 joints of the legs reddish-brown to dark brown. 



Head smooth, pilose behind the labrum, wrinkled and swollen 

 behind the antennae causing the vertex to appear flattened. 

 Median sulcus distinct on the vertex, short not reaching the 

 base of the anteunfe, not branclied. Lateral mai'gins of the 

 head much swollen below the antennal sockets. The latter 

 not sunken, standing close together (0.73 m/m apart). Antennae 

 long and slendei", reaching as far back as the suture of the 

 third segment in the male, as the posterior margin of the second 

 segment in the female ; shortly pilose from the second joint ; 

 four sensorv cones. Micrometrical measurements of the joints: — 

 1st, 0.416 m/m ; 2nd, 1.216 m/m ; 3rd, 1.152 m/m ; 4th, 1.056 

 m/m; 5th, 1.088 m/m ; 6th, 0.992 m/m ; 7th and 8th, 0.160 

 m/m ; total length, 6.08 m/m. 



Integuments smooth, dull on the prozonite, strongly shining 

 on the metazonites, the latter with scarcely perceptible 

 irregular wrinkles towards the posterior end of the body. 



Tergites and keels similai' in shape to A. niiiihoici, trans- 

 versely furrowed from the fifth to the seventeenth segment. 

 From the fifth segment the body is flattened (PI. xv., fig. 10) 

 while it remain convex in A. niinhuiri. The dorsal surface of 

 the keels of second segment ay)pears less hollowed. Suture 



