294 Mr. F. P. Pascoe on new Genera and Species of 



A chthosus * laticornis. 



A. fusco-castaneus, nitidus ; clypeo haud cornuto ; prothorace ( J ) 

 in medio apicis leviter excavato ; antenuis art. 6 penultimis valde 

 transversis. 



Hah. Clarence River. 



Dark chestnut-brown, glossy, slightly convex j head small, 

 a broad triangular excavation between the eyes ; clypeus very 

 convex, not horned ; antennae reddish, gradually broader 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 irregular excavation ; scutellum small, triangular ; elytra 

 deeply striate-punctate, the punctures rather small and not 

 approximate ; body beneath reddish brown, glossy ; legs paler; 

 anterior tibiae dilated, serrated externally, and emarginate in- 

 ternally near the base ; middle tibias rather spined than ser- 

 rated. Length 5\ lines. 



The female differs in the prothorax being without any ex- 

 cavation, the anterior tibiae 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 t, closely resembling the 

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

 This genus is represented in South America by Antimachus^ 

 which also includes similarly degraded forms. 



Tyndarisus. 



Subfamily Strongtliin^. 



Antennae breviusculae, ad apicem sensim crassiores, art, ultimo prae- 



cedeute duplo longiore, 

 Prothorax transversus, lateribus marginato-productus. 

 Tarsi longissimi, lineares, omnes sequales. 



Head small, subvertical, narrower anteriorly ; clypeus trun- 

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

 not approximate. Antennas rather short, a little thicker out- 

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

 twice the length of the preceding. Mentum trapeziform ; 

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

 emarginate at the apex ; its palpi stout, with the last joint 

 large and subsecuriform. Maxillai small, outer lobe transverse, 



* Pascoe, Journ. of Eiitom. ii. p. 42. It belongs to the lllominae. 

 t Probably TThmn IrPiii'rosfKfn, Blanch. 



