BY WILLIAM MACLEAY, F.L.S., &C. 127 



ft 



Carenidium tropicale, n. sp. 



Somewhat like C. Ghaudoiri, but much smaller. The upper 

 surface is brilliant metallic green, the under surface, legs and 

 parts of the mouth piceous. The head is slightly narrower than 

 the thorax, prominently angled in froat of the eyes, the forehead 

 near the clypeus with a transverse curved shallow depression, the 

 clypeus broadly and shallowly emargiuate with on each side a 

 strong prominent conical tooth, the labrum slightly ci'escentic with 

 six setigerous punctures. Thorax much broader than the length, 

 the sides and posterior angles almost semi-circularly rounded, the 

 basal lobe recurved and slightly emarginate. Elytra oval, 

 broadest near the middle and there as broad as the thorax, rather 

 thinly covered with minute punctures, no impressed punctures on 

 the disc, a row of punctures in the lateral margins and a slight 

 depression at the base occupied by four punctures in a ti-ansverse 

 row and others above on the external side. 



Length, 9 lines. 



Hah. — Endeavour River. 



Chaudoir's genus ConojJteriom is very doubtfully characterised, 

 but there are some species resembling Conopterum insigrie, 

 Chaud., which can scarcely be placed in Carenidium, and differ 

 still more from Eutoma and Carenum. For these I shall adopt 

 Chaudoir's name of Conopterum, and the following are the chief 

 distinctive characters. Head like Carenidium but the labrum not 

 deeply emarginate or declivous in front. Antennae like Care- 

 nidum, but rather less attenuate towards the apex. Mandibles 

 very strong with vertical horns. Elytra elongate, ovate, narrow- 

 ing to the apex. 



Conopterum violaceum, n. sp. 



Upper sui'face violet black with green borders, under surface 

 and legs brownish black, the whole very nitid. Head large, 

 scarcely so broad as the thorax at its widest part, the frontal 

 canals deep and diverging behind, the clypeus and labrum 



