622 



Blackburn as functus and maculatus respectively, are in 

 perfect agreement. 



The type of albidus is in the British Museum, and it 

 seems probable that it was also described from a form of 

 senex ; the longitudinal impression on the head of that species 

 appears to vary with the condition of the pubescence, and 

 the humeral tubercles are also variable to a certain extent. 

 But I have 6een no specimen of the genus agreeing with the 

 following details: — "When closely examined this species 

 appears to be rather closely sprinkled all over with minute 

 snowy-white spots, such spots consisting of single white scales 

 interspersed with the darker ones." 



The locality of the type of senex was unknown, but the 

 specimens before me are from North-western Australia 

 (Roebuck Bay and Derby), Northern Territory (Tennant 

 Creek, McDonnell Ranges, and Finke River) and South 

 Australia (North-western interior and Ooldea). 



MlCEOTEAGUS ARACHNE, PaSC. . 



Var. M. sticticus, Pase. 



There are numerous specimens before me from Western 

 Australia (Geraldton, Fortescue River, and Cue) and 

 Queensland (Dalby) that I refer to this species, which I 

 consider somewhat doubtfully distinct from senex, as its 

 general structure (including the sexual differences of the palpi 

 and hind coxae) is practically the same ; but it may be 

 distinguished by the black spots on the elytra being always 

 isolated and usually rounded, the long hairs on the upper- 

 surface are also more numerous. Although none of the speci- 

 mens in the Museum could be said to have the elytral clothing 

 "pale lemon-yellow," it is decidedly yellowish on some of 

 them, but on the majority it is of a more or less dingy-brown, 

 in places shading off to whitish grey; but even on the very 

 dark specimens the black spots are conspicuous. 



Mr. H. W. Brown has taken at Lake Austin and South- 

 ern Cross (in Western Australia) numerous specimens that 

 have the pubescence almost uniformly greyish-white, the 

 setae white except on the antennae, tarsi, and part of the 

 tibiae, and the longer hairs dark and numerous; the dark 

 spots on the elytra are smaller and much less conspicuous 

 than on the typical form, and are sometimes more of a 

 reddish-brown than black. On some specimens the numerous 

 setae (not the hairs) on the elytra are conspicuously paler 

 than the depressed pubescence, but this is due to the latter 

 appearing darker through the infiltration of grease: such 

 specimens to a certain extent agree with Blackburn's quoted 



