New Australian Coleoptera. 121 



The metasternum is widely and rather deeply impressed down 

 the middle, and the anterior trochanters have a minute tubercule 

 on their outer edges, near their points of insertion with the coxae. 

 The undersurface of the abdomen has the second segment armed with 

 a lamelliform protuberance similar to that found in longipilosus. 

 Immediately behind this there is a wide, shallow depression, whicli 

 extends to the apex of the abdomen. The front tibiae are also armed 

 with an internal tooth toward their apices. 



R. stngicollis, and the three allied species here described, which 

 might appropriately be termed the " strigicollis group," may be 

 conveniently tabulated from characters of their uppersurface as 

 follows. 



A. Prothorax and head longitudinally strigose. 



strigicevhaliis. 

 A.A. Prothorax only longitudinally strigose. 



B. Antennae with two subapical joints very much darker 

 than the rest, apical joint markedly bent. 



strigicollis, 

 B.B. Antennae not so. 



C. Clothing consisting of long, somewhat sparse, hairs. 



longipilosus, 

 C.C. Clothing consisting of short hairs. 



miral)ilis. 



RYBAXIS OTWAYENSIS, n.Sp. 



(^ Castaneous, elytra and appendages slightly paler, moderately 

 clothed with short pale pubescence. 



Head about as long as broad, lightly attenuate in front, incised 

 at sides for the reception of eyes, inter-oculate foveae very prominent, 

 with a shallow inter-antennal impression, and small but evenly 

 distributed punctures; antennae with joint 1 cylindric, viewed from 

 above a little shorter than 2 and 3 combined, 2 subovate, narrower 

 than 1, 3-7 more or less elongate, subequal in width, 5 longer than 

 the adjacent joints, 8 much shorter and lightly narrower 

 than 7, 9 a little longer and broader than 8, 10 trapezoidal, 

 not much longer than 9, 11 equal in length, to 9 and 

 10 combined, curved, acuminate. Prothorax lightly trans- 

 verse, convex, sides broadly rounded to their widest part just before 

 middle, thence lightly rounded to base, base a little rounded, trans- 

 versal groove joining lateral foveae pronounced, more angulate hind- 

 wards than usual; puncturation rather strong and evenly distributed. 

 Elytra transverse, apical margin of each elytron produced in middle; 

 dorsal striae strongly defined, passing apical fourth, their apices 

 deflected outwards; puncturation a little less distinct than on pro- 

 thorax. Abdomen rather long, a little narrower than elytra at their 

 widest, segments strongly margined, no medio-basal carinules. Metas- 

 ternum broadly depressed down middle, with two small, round, fascicle 

 filled foveae immediately behind intermediate coxae. Anterior tro- 

 chanters with a minute tooth near base in front, intermediate with 

 a prominent curved tooth at base behind. Undersurface of abdomen 



