318 



narrow, subtriangular, and vertical. Legs long and thin, hind 

 tibia© dilated. 



I cannot find that this genus has been previously named 

 or recorded from Australia or New Guinea ; its nearest ally 

 appears to be Mecynopi/s, from which it differs in having the 

 elytra strongly narrowed from the inner, as well as from the 

 outer, side (much as in Agapete); the sculpture of the outer 

 discal parts are much as on some species of Macrones, but the 

 eyes are notched. The four front coxae and their cavities are 

 much as on Mecynopus, the eyes are larger, the upper portion 

 conspicuously so, but the facets are slightly smaller. Type 

 of genus, tibialis. 



Brachactptera tibialis, n. sp. 



Blackish; elytra watery flavous, but a ridge from each 

 shoulder to the narrow part, and the whole of the latter deeply 

 infuscated, four front femora pale castaneous, but extreme 

 base almost white, front tibiae castaneous on basal third, 

 middle only near base, rest of four front legs black, hind 

 femora almost white on basal half, basal half of tibiae and two 

 basal joints of tarsi not much darker, rest of hind legs deeply 

 infuscated ; antennae deeply infuscated, but two basal joints 

 and lower parts of several following ones castaneous. Moder- 

 ately clothed with whitish pubescence, becoming almost black 

 in places, head and prothorax in addition with rather long, 

 dark hairs; elytra more sparsely clothed than rest of upper- 

 surface. 



Head with deep crowded punctures, but becoming sparse 

 on clypeus, where the derm is shining; longitudinal impres- 

 sion deep only between antennae. Antennae passing abdomen 

 for a short distance, first joint slightly shorter than third, third 

 and fourth subequal, fifth and sixth longer, seventh-tenth 

 slightly decreasing in length, eleventh slightly longer than 

 tenth. Prothorax circularly constricted near apex, the sub- 

 basal constriction not continuous across prosternum : with a 

 subcorneal tubercle on each side and four obtuse swellings on 

 disc (of these two are in the middle and two slightly behind 

 them, but nearer to the median ones than to each other) ; with 

 crowded punctures somewhat as on head. Elytra about once 

 and one-half the width of prothorax, from about the middle 

 each about half the width of head between antennae, base 

 strongly trisinuate, shoulders prominent ; disc coarsely shag- 

 reened, outer portion elevated and with coarse punctures, 

 apical half with dense and rather small punctures. Front 

 legs long, but hardly more than half the length of the others ; 

 hind tibiae with apical two-fifths somewhat flat, conspicuously 

 dilated and clothed with black pubescence. Length, 9-11 mm. 



