306 INSECTS. COLEOPTERA. 



The Prionii are insects of large size, inhabiting woods and forests. During the 

 day they conceal themselves in the holes which their larvae have made in the trunks of 

 old trees, and fly about in the evening. The body of the larvae consists of twelve mam- 

 millated segments, and they present the appearance of a large white worm, with the 

 head a little broader than the rest of the body, and two short and strong mandibles. 

 When arrived at their full growth, they form a cocoon, composed in a great part of 

 fragments of the wood ; but before undergoing their final metamorphosis they ap- 

 proach the surface of the trunk. 



P. coriarius, Fab. Brownish black, with the antennae serrated, and 

 three teeth at the lateral margin of the thorax, 15 lines long. 

 Inhabits Europe, in woods. Shaw vi. pi. 25. 



TRIBE II. CERAMBYCINI. 

 Labrum very distinct. 



Gen. LISSONOTUS, CTENODES, MEGADERA, DORCACERUS, LOPHONOCE- 

 RUS, CERAMBYX, PHCENICOCERUS, CALLICHROMA, CALLIDIUM, RHI- 

 NOTRAGUS, DlSTICHOCERUS, STENODERUS, LEPTOCERUS. 



Gen. CERAME^X, Lin. Lat. 



Eyes lunated, surrounding the base of the antennae ; labrum very 

 apparent ; head sloped before ; palpi terminated by a large 

 joint in the form of a reversed, elongated, and compressed 

 cone ; maxillary larger than the labial palpi ; thorax almost 

 square or cylindrical, generally spinous or tubercular on the 

 sides ; antennae long and setaceous. 



The insects of this genus are distinguished by the length of the antennae. They 

 are found in woods and upon the trunks of trees. When they are seized, they try 

 to defend themselves, and emit a sharp sound. The female is provided with a per- 

 fprator at the end of the abdomen for the purpose of boring the wood for the recep- 

 tion of the ova. The body of the larva is long, soft, and composed of thirteen seg- 

 ments, with a scaly head and two strong jaws. 



C. heros, Fab. Lat. Black, with the elytra brown, chiefly towards 

 their extremity ; antennas very long in the male ; thorax rough, 

 with a spine on each side. 1^ to 2 inches long. Inhabits Eu- 

 rope, on the Oak Oliv. Col. iv. No. 67, pi. 1, fig. 1. 



TRIBE III. NECYDALIDES. 



Wings extended in almost all their length, only slightly folded 

 at their extremity ; elytra very short and truncated, or nar- 

 rowed and subulate a little beyond their base ; body narrow 

 and elongated. 

 Gen. STENOPTERUS, SANGARIS, NECYDALIS, (Molorchus.) 



Gen. NECYDALIS, Lin. Lat. 



All the palpi filiform, the last joint almost cylindrical, or ovate 

 and truncated at the apex ; antennae filiform, a little shorter 

 than the body ; thorax rounded, almost cylindrical ; elytra 

 very short and rounded, or narrowed and terminating in di- 

 verging points ; body narrow, elongated. 



N. major, Lat. Black, with the elytra very short and reddish ; 

 antennae and feet of the same colour ; the posterior extremity of 

 the thighs black. Europe, on flowers. Shaw, vi. pi. 27- 



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