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In almost all the species hereafter described, the male pvgo- 

 phor is briefly described, but the figures should also be referred 

 to. In connection with both descriptions and figures, it must be 

 remembered that the pygophor is not always, or even often, 

 straightly truncate apically, that the different pieces do not 

 necessarily lie in the same plane, and, moreover, that thev are 

 partly mobile. Consequently when comparing with suspected 

 specimens, the latter should be carefully examined from several 

 points of view. The figures have almost all been drawn when 

 the genital styles, usually the most important part, are as flat 

 to the eye, as possible. 



(b) Female Genitalia. 



1 have not specially studied these, and have not used them 

 in the descri])tions, but they appear to present slight specific dif- 

 ferences in the lengths of the segments. 



The Australo-Fijian Genera may be disposed as follows: 



I Tibial spur awl-shaped, with concave sides, and one (apical ) 

 spine (2) 



I a Tibial spur bilaminate, or at least tectiform, with several 

 feeble spines on the lower edge (3 ) 



lb Tilnal spur subcultrate, solid, elongate, strongly compress- 

 ed with 8 strong spines 3 Protcrosydm 



2 Antemiae very long, second segment one half longer than 

 the first, frontal keels uniting about the middle cii the 

 frons I U gyops 



2a Antennae shorter, with the second segment 3 times longer 

 than the first, frontal keels uniting close to the base of 

 the frons 2 Melanesia 



3 Antennae cylindric : male pygophor not spined on the ven- 



tral margin (4 ) 



3a I'^irst segment of antennae flattened and much widened api- 

 call}' ; male pygophor with 2 spines on the ventral margin 

 7 Perkiiisiclla 



4 Frons with 2 outwardly rounded keels, uniting at base and 



apex (if at all ) 4 Crioinorpliiis 



4a Frons with 2 keels uniting not apical of the lower margin 

 of the eyes ( 5 ) 



5 Head dorsally at least twice as long as wide (6) 



5a Head dorsally less than twice as long as wide (8) 



6 Hind margin of head sinuate 8 Steiiocraiiiis 



6a Hind margin of head truncate (7) 



