TcnebnonicIi\3 /yv)/;i Aus(rali<i and Tasniduid. 5.") 



AcJtthosas * Idticorn is. 



A. fusco-castaneus, nitidus; clypeo luiiid cornuto ; j)roth<)i;ic(' ( (^ ) 

 in medio iipicis Icviter cxcavato ; auteiiiiis art. (> ]H'nultiiiiis valdo 

 trans veisis. 



Ifah. Clarence River. 



Dark cliestniit-brown, glossy, slightly convex; head small, 

 a broad triangular excavation between the eyes; clypens very 

 convex, not horned; antenna^, reddish, gradually Ijroader to 

 the seventh joint, the six penultimate very transverse^ ; pro- 

 thorax broader than long, moderately convex, slightly rounded 

 at the sides, finely punctured, the middle of the apex with 

 an irreguhxr excavation ; scutellum small, triangular ; elytra 

 deeply striate-punctate, the punctures rather small and not 

 approximate ; body beneath reddish brown, glossy ; legs })al(ir; 

 anterior tibia? dilated, serrated externally, and emarginate in- 

 ternally near the base ; middle tibia? rather spined than ser- 

 rated. Length 5^ lines. 



The female differs in the prothorax being without any ex- 

 cavation, the anterior tibia? without the internal emargination, 

 and the somewhat smaller size. The type of the genus is a 

 much larger and almost cylindrical insect, with a deep excava- 

 tion occupying nearly the whole anterior portion of the pro- 

 thorax, and with a short broad horn on the clypeus. I have 

 another species, from New Zealand f, closely resembling the 

 above, but, from its simple prothorax, a lowering of the type. 

 This genus is represented in South America by Antlmachus^ 

 which also includes similarly degraded forms. 



Tyndarisus. 



Subfamily Strongtliinje. 



AntenncH breviusculae, ad apicem sensim crassiorcs, art. ultimo pra?- 



cedente duplo longiore. 

 ProtJiorcLv transversus, lateribus marginato-productus. 

 Tarsi longissimi, lineares, omnes ajquales. 



Head small, sub vertical, narrower anteriorly ; cly})eus trun- 

 cate at the apex ; labrum prominent. Eyes broad, vertical, 

 not approximate. Antenna? rather short, a little thicker out- 

 wards, the third joint longer than the fourth, the last oval, 

 twice the length of the preceding. ^Mentum trapezlform ; 

 lower lip as large as the mentum, rounded in front, slightly 

 emarginate at the apex ; its palpi stout, with the last j(jint 

 large and subsecuriform. Maxilla? small, outer lobe transverse, 



♦ Pascoe, Journ. of Entom. ii. p. 42. It belongs to the Ulominre. 

 t Probably JJloma Icevicostata, Blanch. 



