PRIONID^. 45 



10. Mallodox Gnatho, n. s. B.M. 



M. mandibulis basi elevatis, apice quadrideutatis, dentibus tribus 

 margine interiore, imo exteriore : spatio inter oculum et basin 

 mandibuli processus tridentato. 



Jaws at the base with au elevated triangular jirocess, abrupt 

 behind, and gradually sloj)ing in front, the extreme tip with three 

 teeth, over which is another tooth. At the base of each man- 

 dible there is a projection with three blunt teeth at the end, the 

 central smallest and nidistinct. Head verrucose in front, with a 

 deep transverse gioove, a longitudinal impressed line on the ver- 

 tex deepening into a groove between the eyes ; punctured verv 

 closely behind. Thorax rather convex, undulated here and there 

 in the middle ; margins widely and thickly punctured ; sides 

 serrated vvith rather sharp teeth. iScutelium slightly punctured. 

 Elytra with three wide longitudinal ribs, obsolete at the base and 

 tip. the m.iddle one Avith tw o branches near the end one on each 

 side, the one directed towards the margin nearer the tip than the 

 other. Metathorax covered with silken yellowish brown hairs; 

 lower edge of the tibias edged with yellowish brown hairs ; soles 

 of tarsi w ith yellowish brown hairs, the tips of which are greyish. 



Length 20 lines. 

 Hab. Honduras (Coll. Dyson). 



11. Mallodox L^viPENNE, n. s. B.M. 



M. elytris Isevibus, capite inter antennas subexcavato, thorace 

 medio Isevissimo. 



Head somewhat depressed between the eyes and grooved lon- 

 gitudinally ; excavated between the antennae, the latter part 

 thickly punctured ; rest of the head irregularly and coarsely 

 punctured. Thorax very smooth and depressed on the back, with 

 some small scattered punctures, the sides irregularly punctured ; 

 the margins with from ten to twelve small tooth-like crenations. 

 Scutellum somewhat hollowed at the base, the tip slightly 

 notched Elytra veiy smooth. 



Length 19 lines. 

 Hub. Congo. Sir J. Richardson, M.D. 



12. Mallodox cosTiPENNE, n. s. B.M 



M. elytris singulis costis tribus subelevatis, exteriore basi obso- 

 lete ; thorace medio Ifcvi lateribus punctatis, margine sub- 

 crenato- dentata. 



Head irregularly pimctured, in front the punctures are small 

 and close together ; antennae with the joints punctured. Thorax 

 with a large smooth space in the middle, with only a few scat- 

 tered punctures; a longitudinal ridge on each side of the smooth 

 space which does not reach the front margin, and behind runs into 



