Attstralian and Tasmanian Malacodermidae. 141 



Coloured much as gagaticeps, even to the black muzzle ; 

 but the 10th joint but little different to the 9th and 

 certainly not distorted ; the 11th, however, is very different, 

 appearing almost as two joints and without the peculiar 

 lobe projecting backwards as in gagaticeps and most of the 

 allied species ; in fact, at first the antennae appear to be 

 distinctly 12-jointed. The elytral punctures are smaller 

 than in gagaticeps, but are more clearly defined, although 

 this may be partly due to abrasion, as the elytra are 

 almost glabrous in the only specimen before me ; which 

 also is without the middle pair of its legs. 



Heteromastix tenuis, n. sp. {Fig. 91.) 



$ . Black, shining ; elytra ■with a slight bluish gloss. Elytra 

 more sparsely pubescent than usual. 



Head impunctate ; eyes above the average size. Antennae long 

 and thin, 11th joint distinctly longer than 10th. Prothorax dis- 

 tinctly less than twice as wide as long, disc more convex than usual ; 

 each side of base with a small but distinct subtriangular notch. 

 Elytra longer and thinner than usual ; densely and moderately 

 coarsely punctate. Penultimate segment of abdomen semicircularly 

 excised. 



Length 4J-4| mm. 



Rab. Tasmania : Mount Wellington {A. M. Lea). 



The antennae to the eye appear to be as long as the 

 body, but by measurement they are seen to be really a 

 trifle shorter. The margins of the prothorax from some 

 directions appear to be supplied with very minute seti- 

 ferous granules. The elytral punctures are often elongate 

 and three or four are frequently separated from the others 

 by short transverse or oblique wrinkles ; they are almost 

 as large as fusicornis. The insect itself is longer and 

 thinner than any of its congeners here recorded ; it is also 

 the only one with the least trace of blue on the elytra. 

 Even apart from colour, however, the species is very 

 distinct. 



Heteromastix niger, n. sp. 



(J . Black. Elytra more densely clothed with whitish pubescence 

 than usual. 



Head wide and indistinctly punctate. Antennae rather long ; 

 2nd joint more than half the length of third, 11th distinctly longer 



