128 Mr. Arthur M. Lea's Revision of the 



with a moderately distinct tranverse median ridge ; very minutely 

 punctate. Elytra at base considerably wider than prothorax, the 

 apices obtusely pointed and separated ; densely coarsely and some- 

 what rugosely punctate ; with scarcely any indications of raised 

 costae. Legs long and thin. 

 Length 10 mm. 



Hal. Queensland : Tambourine (type in R. Illidge's 

 collection). 



The pale prothorax margins are very narrow and on each 

 side in front appear to be interrupted, but on examining 

 the insect from the side it can be seen that the black does 

 not extend to the extreme margins. The pale markings 

 on the elytra extend from each shoulder to tlie apex and 

 combined look like an elongated V ; the sides from the 

 base to the apical third are narrowly black, the median 

 dark marking (and which has a slight bluish gloss) appears 

 as a narrow triangle or wedge, with its base the exact 

 width of the prothorax, and its apex about one-fourth from 

 tbe apex of the elytra. 



Selenurus appendiculatus, n. sp. {Figs. 104, 105.) 



(J . Of a dingy mouse-coloured grey, head somewhat darker. Very 

 finely pubescent. 



Head convex, microscopically punctate ; eyes large. Antennae 

 long and thin, extending to apex of elytra, 2nd and 3rd joints sub- 

 equal and shorter than 1st or 4th. Prothorax tranverse surface 

 irregular. Elytra not extending to apex of abdomen, each separately 

 rounded; with scarcely visible punctures. ^Momf?i with apical and 

 subapical appendages. Legs long and thin. 



Length 2 mm. 



5 . Differs in having the head more convex, antennae much shorter, 

 legs shorter and abdomen simple. 



Hcib. Tasmania : Mount Wellington, Hobart, Huon 

 River {A. M. Lea). 



Certainly the thinnest and almost the shortest of all the 

 Australian Malacoderms, and perhaps the most remark- 

 able. The abdomen of the male is terminated by a double 

 curved appendage, the 4th* segment on its lower surface 

 appears to have a deeply cleft extension, and from the 

 middle of this two appendages are continued, one on each 

 side of the apical appendages.j" Probably, however, in 



* I may be wrong in regarding this segment as the fourth. 



t The whole is ridiculously suggestive of the skull of a mouse. 



