522 On Two new Genera of Coleoptera. 



siibparallcl, with a serrulate margin. The front margin lias 

 two dark lamclliform tubercles ; there are two smaller ones iu 

 the niitklle of the base ; and the front half of the disk has two 

 converging lines of small tubercles, with three dark ones on 

 each side. The elytra are one and three quarters the length 

 of the thorax and head taken together, clotlicd with fuscous 

 scales, with a few sandy-coloured ones here and there on the 

 costs and at the sides. The suture is raised and it projects 

 slightly at the apex. Each elytron has three marked costaj, 

 the one arising from the shoulder not so distinct as the others. 



Prionidae (aberrant), 

 Pathocerus, gen. nov. 



Head rather small. Eyes slightly separated above, nearly 

 touching each other below. Antennae the length of the 

 elylra, the third to tenth joints emitting a long branch. 

 Labial palpi with the basal joint very small, the second very 

 long ; the third a little shorter than the second, slightly 

 enlarged towards the apex. The maxillary palpi very long: 

 the basal joint short ; the second very long, at least as long as 

 the two iollowing joints taken together, rather slender ; the 

 third and fourth joinls subequal ; the apical joint widened 

 moderately at the apex, which is arcuately rounded. Man- 

 dibles very prominent, falcate, strongly angular about the 

 middle on the outer side (the right mandible with a triangular 

 expansion), the apices acute, the inner edge bidentate. The 

 epistome acuminate. Thorax rather small, rather flat, a little 

 broader than long, broadest a little in front of the middle, 

 obliquely narrowed in front, slightly narrowed posteriorly, 

 the anterior part of the margin retlexed. Scutcllum obtuse at 

 the apex, almost truncate. Elytra three times the length of 

 the head and thorax taken together, at the base much broader 

 than the thorax, narrowed towards the apex ; each elytron 

 with four slightly raised costa?. Prosternal process rather 

 narrow, grooved, curved down posteriorly. Metasternum 

 rather large, the episterna broad at the base, acuminate poste- 

 riorly. Legs long and slender. Tarsi slender, the middle 

 pair a little longer than the tibige, the posterior pair a little 

 shorter than the tibiae; the tirst and second joints elongate, 

 narrow, the second a little shorter than the tirst ; the third 

 shorter, elongate-triangular, emarginate at the apex ; the 

 fourth very small, but distinct. 



Tiiis genus is closely allied to Mysteria; it differs chiefly 

 in having the antennee branching, and in the form of the 

 palpi. 



