308 INSECTS. COLEOPTERA. 



mity, inserted near the eyes, and scarcely longer than the 

 head and thorax ; thorax narrow, cylindrical or square, re- 

 ceiving the head to the eyes ; terminal and exterior lobe of 

 the jaws widened towards its extremity. 



This family resembles the preceding in their tarsi, jaws, and labium. The pos- 

 terior feet are large in the greater number ; the first three joints of the tarsi short ; the 

 penult one often receiving the last between its two divisions. 



TRIBE I.- SAGRIDES. 

 Labium deeply notched ; point of the mandibles entire. 



Gen. MEGALOPUS, ORSODACNE, SAGRA. 



Gen. MEGALOPUS, Fab. Lat. 



Antennae short, almost serrated ; mandibles strong, pointed, 

 entire, and crossed at their point ; palpi equal, filiform ; body 

 depressed; thorax short, subquadrate; feet robust; tarsi short. 



The species of this genus are from South America. 



M. nigricornis, Lat. Body yellowish, with the antennae, head,, spot 

 on the thorax, legs, and feet black ; elytra grayish green, pubes- 

 cent, widely dotted, the external margin and suture black. In- 

 habits South America. Lat. Gen. pi. 11, fig. 5. 



Gen. SAGRA, Lat. 



Antennae almost filiform, slightly thickened towards their extre- 

 mity, composed of cylindrical joints, the last longer than the 

 inferior ones ; mandibles terminated in a simple point ; labium 

 notched ; palpi short, filiform, the last joint almost ovoid ; 

 eyes elongated, almost lunate ; the two posterior feet very 

 large, compressed and edged on the inferior side ; the three 

 first joints of the tarsi large, furnished below with cushions, 

 the third deeply notched. 



The insects of this genus are large, and inhabit the southern countries of Africa 

 and Asia. 



S.femoralis, Oliv. Brilliant golden green, the posterior legs with 

 a deep notch near their extremity, and two teeth. About an inch 

 long. Inhabits Ceylon Coleopt. v. pi. 1, fig. 1. 



S. tristis, Oliv. Deep bluish green, the elytra with close and irre- 

 gular depressions ; intermediate thighs strongly dentated ; poste- 

 rior thighs not notched, bidentate, and a reddish hairy spot at 

 their base. Inhabits Africa. Coleopt. v. pi. 1, fig. 4. 



TRIBE II CRIOCERIDES. 



Labium entire, or without a marked notch ; mandibles bifid, or 

 bidentated at their extremity. 

 Gen. DONACIA, H^EMOKIA, AUCHENIA, CRIOCERIS, PETAURISTA. 



Gen. CRIOCERIS, Lat. Chrysomela, Lin. 

 Body slightly elongated ; thorax narrow, almost cylindrical ; 

 head distinct ; eyes projecting, notched ; antennae filiform, 



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