152 



THE OEBER OF COLEOPTEEA. 



F F. First joint of antennse at least as long as the third Mallodon. 



C C. Thoracic margin almost wanting, with a short spine ; side pieces triangular ; head verti- 

 cal Tragosoma. 



B B. Eyes finely granulated ; colors variegated ; thorax rough, without lateral spine Sphenostethi:8. 



Parandra, Latr., contains two species, one of which, the P. brunnea, 

 Fab., is common. It is about seven-tenths of an inch long, and of a 

 glossy mahogany-brown color. The other species, P. polita, Say, is 

 much more rare. It closely resembles the other, but can be distinguished 

 by its head being as wide as the thorax. 



Frionus, Geoff"., contains many species. The two most common are 

 the P. imbricornis of Linnseus, less than an inch long, of a mahogany- 

 brown color, with long imbricated anteuufe, the joints lapping one 

 upon another ; and the P. brevicorms, or short-horned Prionus, of Fab- 

 ricius ; the antennre of the female are scarcely a third as long as the 

 body, but those of the male are much longer. This species is black, 

 the male an inch and a quarter, and the female an inch and a half or 

 more in length. 



JDerobraclms^ Serv., contains one large brownish-yellow species found 

 in the Middle and Southern States. 



Orthosoma, Serv., contains one common species, the 0. cyllnclricmn, 

 Fab., a long, narrow, brown insect, an inch and a quarter in length. 



Ergates^ Serv., has but one species, from California, originally de- 

 scribed by Dr. LeConte under the name of Trichoonemis spiculatus. 



Mallodon, Serv., contains several species, none of which are common. 



Tragosoma, Serv., contains but one species, the T. Uarrisu, Lee. 



Sphenostethus, Hald., contains but one species, the ^S'. serripennis, Hal- 

 deman, but previouslj^ described by Buquet under the name of Solenop- 

 era Taslei. It is of medium size, of a blackish-brown color, and inhab- 

 its the Middle and Southern States, but is nowhere common. 



Sub family CEKAMBTCIDES. 



The Cerambycides are much more numerous and diversified than the 

 Prionides, and are often ornamented with bright and variegated colors. 

 They differ from the Prionides chiefly in having the sides of the thorax 



rounded, without a salient margin, but 

 sometimes furnished with a single spine 

 or tubercle on each side, and from the 

 Laniiides in having the head sometimes 

 horizontal, but usually more or less in- 

 clined, whereas in the Lamiides it is ver- 

 ticle. 

 It must be remarked however that the 



Eliphidion paeallelum, Newm. : — a, « . . i .,..,•, 



larva; &, twig split open, showing the en- lacc may -assume a Vertical positiou lu the 



closed pupa ; A-, the severed end of the twig; ,•• i-n i ^i i 1.1, 



c, beetle ;i, basal joints of the antennffi, Cerambycides, whcn the head IS bent 



showing the characteristic spines at the tip , 1 j i 1 j. j.i 1 



of the 3d and4thjomt8; j.tip of elytron ; strougly dowuwards, but the transition 



"^1 ^1/1 .'/•''. head, maxilla, labium, mandible. /. j_i • l j. j.a !• • , 



and antenna of larva-after Kiley. irom the OCCipUt tO the laCe IS here USU- 



