Australian and Tasmanian Malacodcrmidae. 133 



Heteromastix bicolor, Boh., Res. Eugen., p. 81, PI. I, 



fio-. 3; Lea, P. L. S., N.S.W., 1895, p. 233. {Figs. 41, 



42.) 



In the typical form of this species the antennae of the 



male are uniformly pallid, rather stout, and somewhat 



shorter than the elytra; the 11th joint at its greatest 



leogth is fully twice the length of the 10th. 



Eab. N.S. Wales: Sydney, National Park. 



Var. PRIMUS, n. var. 



Differs in having the antennae thinner and longer (slightly longer 

 than the elytra) with the median joints infuscate, but the terminal 

 joints are of the same shape and colour as in the typical form. 



Hah. N.S. Wales : National Park. 



Var. SECUNDUS, n. var. {Fig. 43.) 



Differs from the typical form in having the antennae thinner and 

 much longer (as long as the head prothorax and elytra combined), 

 the median joints infuscate and the terminal joint not much longer 

 than the 10th at its longest. Its elytra are more sparsely clothed 

 and with darker pubescence, and the punctures of the same are 

 larger and more noticeable. 



Although the antennae of this form are so different in 

 appearance to that of the typical form of iicolor, I have 

 not considered myself justified in describing the unique 

 specimen before me as belonging to a distinct species, 

 especially as the preceding variety is clearly intermediate 

 between the two forms. 



Rab. N.S. Wales : Wollongong. 



Heteromastix pusillus, Boh. ( TdcpJwrus), Res. Eugen., 

 1858, p. 80. 



Telephones i^ysio, Gemm., Col. Heft., vi, 1870, p. 120. 

 Var. dilataticollis, Blackb., T. R. S., S.A., 1892, p. 222. 



This species is common in New South Wales, and varies 

 in length from 2i to 3f mm. The basal joints of the 

 antennae and the legs also vary in colour, but the paler 

 portions are never of the clear colour of the prothorax. 

 The dilated portion of the prothorax is much more 

 conspicuous in some specimens than in others. 



Numerous specimens from Western Australia before me 



