10 HENRY F. CARTER. 



different individuals of the same species, but on different legs of the same individual 

 (c/. footnote p. 20). Claws equal, small, less than one-half the length of the fifth 

 segment ; in the female similar on all the legs, either simple, each with a bristle arising 

 from the base (fig. 4,c and e) or dentate, with a strong basal tooth (fig. 4, d and'/) ; in the 

 male (fig. 4, b) dissimilar on the fore and middle legs, one simple, the other with a long 

 basal tooth (in L. bezzii both are said to be dentate), on the hind legs similar, simple. 

 Empodium in the form of a minute branched bristle. 



Abdomen of the female composed of nine segments — the ninth greatly reduced in 

 size — clothed with short hairs, and bearing distally two exceedingly long, narrowly 

 conical lamellae (fig. 6). Genital orifice, anteriorly, with a semi-circular chitinous 

 border from which arise numerous small and a few long hairs, the latter directed 

 inwards and backwards over the aperture. Spermathecae usually two in number 

 (occasionally, e.g., L. kerteszi,a. small third spermatheca is present), subspherical or 

 oval and but slightly produced posteriori}^ before the junction with the duct. Abdomen 

 of the male more slender than that of the female, the hypopygium conspicuous. 



Subgenus Leptoconops (Skuse), Carter. 



As here restricted, this subgenus includes only those species in which the 

 antennae of the female are composed of fourteen segments ; in this sex the species 

 fall into two groups according to the claws being simple or dentate. 



Leptoconops stygius, Skuse. 



Leptoconops stygius, Skuse, Proc. Linn. Soc. New South Wales, (2) iv, p. 288 (1890). 



Leptoconops skiisii, Noe (error in explanation of Plate v). Arch. Zool. Napoli, iii 



(1907). 



Skuse's description of this species, the type of thegenusI,t'/)tocowo/'s,isas follows: — 



" $. — Length of antennae, 0-42 mm. ; expanseof wings, 1 -27 mm. ; sizeofbodj^ 

 1-66 mm. Entirely black. Joints of antennae with dense light-greyish verticils. 

 Head and thorax levigate, with minute black hairs. Abdomen about twice the 

 length of the thorax, opaque, with some minute black hairs ; lamellae very long, 

 slender. Legs slender. Hind metatarsus one-third longer than the second tarsal 

 joint. In the fore legs, the tibiae rather more than twice the length of the metatarsus. 

 Wings hyaline, rather weakly iridescent ; costal and first two longitudinal veins 

 greyish-brownish, the rest pale and indistinct. Auxiliary vein not distinguishable, 

 apparently wanting ; first and second [i.e., third] longitudinal veins reaching costa 

 before the middle of the anterior border, confluent at the tips, tip of second longitu- 

 dinal vein almost opposite but immediately beyond the tip of the posterior branch of 

 the fifth longitudinal vein ; marginal cross-vein indistinct ; marginal cell small ; third 

 longitudinal vein [i.e., the strong fold situated in the upper portion of the wing] 

 arcuated, not quite reaching the margin, terminating a little above the apex of the 

 wing ; fourth longitudinal vein bellied downwards at the middle, reaching the margin 

 a little below the apex of the wing, the posterior branch detached ; fork of fifth 

 longitudinal vein wide, the anterior branch twice the length of the posterior. 



" Habitat. Woronora (Skuse). October." 



Through the kindness of Professor S. J. Johnston, of Sydney L^niversity, I have 

 been able to examine one of the three specimens of L. stygius contained in the Macleay 

 Museum, Sydney, and am thus in a position to supplement the above description with 

 some important morphological details. 



