the TeiicLrionida} of Australia cf;c. 97 



chiefly in the form of the elytra and in tlie sliort mctastemum, 

 the latter character being an exceptional one in its suhfamily. 

 The female apparently only differs from the male in being 

 broader and more bulky. 



Mychestes Ujnarius. 



M. fuscua vol fusco-femigineus, squannilis pallidioribus dispcrsis, 

 supra fortiter tiibercxdatus. 



Ilab. Queensland (in rotten wood). 



Dark brown or ferruginous brown, covered with loosely set 

 small paler scales, and strongly tuberculate above ; antennary 

 ridge convex anteriorly ; clypeus tinmcate, its junction with 

 the head forming a broad deep groove ; prothorax broader 

 than the elytra, much rounded and bitiiberculate at the sides ; 

 the disk with a double row, sliglitly arched forwards, each of 

 four tubercles ; seutellum rounded, prominent ; elytra ovate, 

 raised at the sides, somewhat flattish above, each with a row 

 of three large tubercles not contiguous to the suture, with a 

 fourth but smaller tubercle in the same line behind, and at 

 the sides seven nearly as large and in-egularly arranged in 

 two rows ; legs somewhat hispid, the claws ferniginous ; an- 

 tenna slightly setulose, the third joint as long as the two next 

 together. Length 4 lines. 



ISOSTIEA. 

 (Subfamily Opatbin^.) 



Clypeus apice integer ; hibrum transversum, baud siuuatum. 

 Palpi maxillanim securiformes. 

 Prothorax elytris arete aptatus. 

 EpiphurcB clytroruin postice deficieutcs. 



Of this genus I have only a single specimen, and, as the 

 males (and commonly the females) of the Opatrina? have 

 mostly dilated anterior tibiee, whilst this has them of the ordi- 

 nary form, it is possibly a female ; or the character may be 

 common to both sexes. The genus, however, allied to Oj^a- 

 triDHj Fab., in the last three characters of the above diagnosis, 

 is essentially differentiated by the clypeus and upper lip. The 

 antennre are rather short, the last six joints moniliform, form- 

 ing a tolerably distinct club ; of these the seventh to the tenth 

 are very transverse ; the labial palpi arise from the central 

 portion of the labium, and not from its base as in Ojjatrutn 

 (0. salndosztm) . The prothorax is more convex and overhangs 

 the head, and is closely applied to the elytra. All the tibiae 

 are subfusiform or a little contracted at the extremity. The 

 tarsi are slender and villous beneath. 



