Australian and Tasmanian Malacodermidae. 139 



Heteromastix frater, n. sp. {Fig. 47.) 



(J . Black ; muzzle and lower surface of head, protliorax, scu- 

 tellum, legs (tarsi and apex of four hind tibiae infuscate) and three 

 basal joints of antennae flavous. 



Shape much as in the preceding species. 



Length 4|-5j mm. 



Hah. N. S. Wales : Jenolan (-/. G. Wiburd and A. M. 

 Lea), Mittagong ( W. W. Froggatt). 



The antennae resemble those of the preceding species 

 but are distinctly thinner, the 10th joint is more produced 

 at the apex, and the 11th at the base. The females are 

 smaller than the females of that species and have much 

 shorter and thinner antennae ; the scutellum is pale and 

 a greater portion of the muzzle and legs is pale. Never- 

 theless, the two are very closely allied. 



Heteromastix pallipes, n. sp. {Figs. 48, 49.) 



$. Black; prothorax, scutellum, legs (two apical joints of tarsi 

 slightly infnscate) and two basal joints of antennae flavous. 



Head comparatively small. Antennae long ; 10th joint wide, 

 strongly produced at apex; 11th long and distorted. Prothorax 

 more than twice as wide as long, sides regularly rounded. Elytra 

 very densely and rugosely but not coarsely punctate. Penultimate 

 segment of abdomen widely semicircularly excised. 



Length 3| mm. 



Hob. N. S. Wales : Sydney {A. M. Lea). 



Moderately close to gagaticeps, but with entirely pallid 

 legs and scutellum ; the antennae are considerably longer, 

 the 11th joint is much longer, and the apical portion 

 projects at about 45° from the rest of the joint ; the pro- 

 thorax is wider and the elytral punctures are considerably 

 smaller. From the preceding species it differs in having 

 longer antennae, 11th joint of different shape and by its 

 dark muzzle. The antennae are much longer and thinner 

 than in any of the allied species; the 10th joint from one 

 direction appears to be wide and at the apex feebly 

 emarginate, from another direction it is seen to be strongly 

 and obliquely produced ; the 11th from one direction 

 appears long, thin and slightly constricted in the middle, 

 from another it appears to be joined at one corner to the 

 10th, with — from its outer base — a distinct spur projecting 



