PRIONID.E. 



37 



9. Macrotoma castanea. B.M. 

 Prionus castaneus, Oliv. Col. iv. 23. pi. 8. f. 28, 29. 



Prionus acanthopus, Latr. £ . 

 Macrotoma velutina, Dej. Cat. (olim) ? . 

 Macrotoma castanea, Serv. Ann. Soc. Ent. Fr. i. 138. 

 Hab. E. Indies ; I. of France. 



10. Macrotoma corticina. 



Prionus corticinus, Schcenh. Syn. Ins. i. 3. 345. 



King, Abh. Berl. Ah. 1832, p. 204. 

 Prionus cinnamomeus, Oliv. (nee Fabr.) Col. iv. 20. t. 5. f. 18. 

 Hab. " S. America," Oliv. ; " Madagascar," Klug. 



11. Macrotoma Californica, n. s. B.M. 



M. thorace scabriusculo, dorso foveis undecim, duabus in parte 

 antica subelongatis ; elytris coriaceis, nitidiusculis et quadri- 

 costatis. 



Head grooved down the middle, between the eyes the groove 

 is very deep, third joint of antennae very long and roughish. Man- 

 dibles short, swollen, angled, punctured, smooth at the tip. 

 Thorax shagreened, front edge margined with brownish yellow 

 hairs ; convex, surface waved ; there are eleven depressions, three 

 on the posterior margin, two larger than the others, somewhat 

 lengthened and sometimes bent, and three on the sides placed 

 triangularly. Scutellum smooth, slightly emarginate at the end 

 and depressed, with two patches of hair at the base. Elytra 

 coriaceous, shining, light brown, slightly margined with darker 

 brown, with four longitudinal costae, united at the end two and 

 two each into one branch, which two branches again coalesce be- 

 fore reaching the tip ; suture slightly spined. Femora and legs 

 smooth, without spines. 



Length from 22 to 26 lines. 

 Hab. California. 



12. Macrotoma humeralis, n. s. B.M. 



M. thoracis dorso laevigata, lateribus late scabro-vermiculatis, 

 marginibus acute- den tatis ; scutello depresso, elytris basi 

 super scutellum exstantibus, punctis plurimis asperis, singulis 

 bicostatis, costis ad suturam. 



Head with short, bkmt, toothless, somewhat conical mandi- 

 bles ; between the antennae there are two deep impressions placed 

 transversely ; between the eyes there is a deep groove, and on 

 the crown of the head an impressed line ; sides of the head be- 



