38 



PRIONID.E. 



hind the eyes very thickly punctured. Antennae with the first 

 joint very much compressed at the base ; third joint also com- 

 pressed ; the sixth and following joints are grooved on the out- 

 side and inside. Thorax with the disc smooth, the sides rough 

 with vermicular excavations, the lateral margins and ends of 

 posterior margins with many sharpish teeth, some of them double 

 at the end. Scutellum sunk below the general surface, with 

 several small rough points, the tip deflexed ; the shoulders and 

 base of elytra considerably above the surface of the scutellum, 

 with several small warts ; surface of elytra shagreened and punc- 

 tured, each with two costae near the suture, obsolete at the base 

 and at the tip, the suture slightly produced into a spine. Femora 

 doubly serrated on the under side, the tibiae serrated both before 

 and behind. 



Length 28 lines. 

 Hab. W. Africa (Coll. Rich). 



13. Macrotoma scabridorsis, n. s. B.M. 



M. thorace scabro-vermiculato, scutello laevigata apice emar- 

 ginato-punctato ; elytris rude punctatis et vermiculatis, sutura 

 in spinam producta. 



Head roughly punctured, grooved down the middle, deeply 

 excavated between the eyes ; antennae roughly punctured ; basal 

 joint in front roughly grooved, third joint channeled above and 

 below. Thorax roughly shagreened, on the hinder edge a smooth 

 shining space with some scattered punctures ; sides crenated ; 

 posterior angle sharp and produced. Scutellum smooth, with a 

 few punctures, the apex slightly emarginate. Elytra rough with 

 punctures and angular impressions ; the suture produced into a 

 spine. Legs compressed; tibiae slightly serrated on the under 

 side, the sides hollowed out. 



Length 14 to 17 lines. 

 Hab. Port Natal (Coll. Gueinzius). 



14. Macrotoma ccelaspis, n. s. B.M. 



M. antennis laevigatis, thoracis dorso laevi, marginibus excavato- 

 punctatis, scutello apice excavato, elytris coriaceis, sutura 

 inermi. 



Head excavated in front before the mandibles, deeply cloven 

 between the antennae, the crown of the head with a shallow im- 

 pressed line. Thorax very smooth on the back with some scat- 

 tered punctures ; the sides deeply and roughly punctured, the 

 punctures confluent, the lateral margin and sides of hind margin 



