7iew genera and species of Tenehrionidce. 279 



Eijhidonius Duboulayi, n. sp. 



Long, d^ lin. ; elytra lat. 4^ lin. — Similar in general 

 form and colour to JE. acuticornis, Pascoe, but of a deeper 

 black : head sparsely punctured ; labrum prominent, deeply 

 angularly emarginate in front ; epistoma deeply and almost 

 semicircularly emarginate in front, broadly revealing the 

 membranous attachment, or hinge, of the labrum, the 

 suture very strongly marked, arcuate, and sinuous in the 

 middle ; prothorax minutely and distantly punctulate, base 

 bisinuate, the hind angles produced and subacute, the 

 median basal lobe subtruncate at the middle, sides rather 

 broadly attenuate and shghtly reflexed, disc but little 

 convex, and with several shalloAv fovea3 at each side, those 

 near the base being the most marked : elytra depressed, 

 each with three — besides an indistinct submargiual one — 

 narrow, rather sharp costte, broadest at base and gradually 

 fining out as they near the apex, which they do not attain, 

 these costfe are each surmounted by a range of small shining 

 tubercles which are continued to the apex after the costas 

 have died out ; intermediate between each costa is a row 

 of similar tubercles, and there are also four rows of small 

 punctures between each costa, the suture is also slightly 

 elevated and bears a similar row of tubercles at each side 

 but rather more closely set than the intercostal rows ; the 

 sides are rather broadly, and somewhat sinuously, margined 

 from behind the shoulders : tibias straight, linear, asperous, 

 the anterior abruptly produced within at the apex ; under- 

 side sparingly punctured ; epipleural fold strongly concave 

 from near the base to the apex ; presternum rather strongly 

 compressed in front, very prominent between the coxte, 

 rather strongly margined at each side, its process gradually 

 sloping behind, the sides flattened out and expanded behind 

 the coxjfi, the middle prominent and strongly compressed. 



Hab. — West Australia, Champion Bay. A single 

 example captured by jNIr. Duboulay. 



From the form of the anterior tibia, and the strong 

 anterior emarginatiou of the labrum, I judge this specimen 

 to be a ^. 



It is necessary to add to the description given by the 

 author of this remarkable genus, that the eyes are very 

 distant from the prothorax, the front is abruptly arcuately 

 declivous at its junction with the epistoma, so that the 

 latter is really on a lower plane than the hinder parts of 

 the head ; it is also very short, rapidly curvedly nan-owed 



