574 EXPLANATION 



glossy-black; head broad, with mandibles almost twice its length, 

 and terminated in a denticulated forceps, circularly distant at 

 base. From Madagascar. 



Fig. 4. Cetonia bicornis, the male, of its natural size; oval, 

 slightly narrowed posteriorly and of a glossy black; the elytra, 

 base and opposite extremity excepted, red; the head divided 

 into two long, projecting, compressed, and pointed horns. 

 Brought from Timor by Messrs Peron and Lesueur. 



Fig. 5. Hispa marginata of the natural size; bluish-black 

 above and yellowish beneath; head, sides of the thorax, exterior 

 margin of the elytra, their suture, and a transverse line near 

 their middle, reddish. From Brazil. This species is a Fabrician 

 Jilurnus. 



Fig. 6. Helseus perforatus of the natural size; body, deep- 

 black and glossy; an opening in the anterior part of the thorax 

 for the passage of the head, and the two lobes of the emargina- 

 tion crossing each other; disk of the elytra furnished with hairs 

 arranged in longitudinal lines. Brought from the Kanguroo 

 Islands by PiTon and Lesueur. 



Fig. 7. Brentus appendiculatus of the natural size; blackish- 

 brown; length of the head and proboscis equal to half that of the 

 body; elytra with russet spots arranged in one line, abruptly 

 narrowed at the extremity and prolonged in the manner of a 

 linear tail; thighs simple. 



This Insect was brought from the Isle of France by M. Cat- 

 toire. Olivier having described, under a nearly similar specific 

 appellation (e/j quei(e), a species very analogous to this one in 

 the termination of the elytra, Ave will call the Brentus, here re- 

 presented, as Count Dejean has done, the Appendiculatus. 



N.B. For these various genera, see Index. 



Plate III. 



Fig. 1. Panagxus quadrimaculatus, Oliv., Fincyc. Method.; 

 of the natural size; black; a notch in each side of the thorax; 

 elytra with punctured strise, and two fulvous-yellow spots on 

 each. From Port Jackson. Peron and Lesueur. 



Fig. 2. Pamborus alternans, Lat., Encyc. Method., of the na- 

 tural size; side of the thorax violet-blue; elytra dark-bronze 

 and sulcated, sulci cut by transverse incisures, with a range of 

 granules. Port Jackson. Peron and Lesueur. 



Fig. 3. Elater bicruciatus, of the natural size; black; superior 

 surface of the thorax and elytra red; centre of the thorax black, 

 with two sulci and a rib in the middle; elytra striated, with a 

 band along the suture, a second that is transverse near the mid- 



