96 Mr. F. P. Pascoc on Aihlitions to 



ing wliitisli substance ; head deeply sunk in the j)Vuthorax, 

 the anterior portion spreading into two shortly triangular 

 horns ; prothorax with a very coni]n-essed disk, forming an 

 oblique elevated tubereulatc lobe, extending over the head, 

 beliind which arc two erect well-marked conical tubercles, 

 each side anteriorly expanding into a fan-shaped, strongly 

 crenated margin, but posteriorly deeply and eroscly emargi- 

 nate, so as to present a large and irregular space between 

 tiiese fan-shaped expansions and the elytra ; scutellum appa- 

 rently large and triangular, but its limits indistinct ; elytra 

 nearly ([uadrate, the whole surface more or less tubereulatc ; 

 the disk almost vertically elevated, with two conical tubercles 

 at the base on each side, and towards tiie suture a line composed 

 of four or five large triangular tubercles, the last being by far 

 the largest ; a row of six smaller tubercles externally on the 

 descending side of the disk, the margin moderately expanded 

 and regularly and coarsely crenato-tuberculate, the apical 

 tubercle diverging slightly from its fellow ; body beneath co- 

 vered with a layer of tlie same spongy-looking substance as 

 that above mentioned, but thinner ; legs ferruginous, Avith a 

 sprinkling of the same substance ; antennre Avith the last three 

 joints forming a distinct club. Length 2| lines. 



A remarkable and very distinct species, which I hope to 

 figure in a future communication, with furtlier remarks on this 

 and other members of its subfamily, including the following 

 new genus. 



Mychestes. 



( Subfam ily Bolitopma gix.e. ) 



Antenniv davata), lO-articulata) ; clava biarticulata. 



Tihire auticse subfusifomies. 



Elytra ovata ; nutasternum breAausculum. 



Head broadly transverse, the clyjieus not cornutcd ; anten- 

 nary ridge simple. Eyes transverse, entire. Antenna3 cla- 

 vate, 10-jointed; scape elongate, the third joint as long as the 

 scape, the rest to the eighth oblong ovate, the last two form- 

 ing an ovate club, Prothorax transverse, rounded but not 

 expanded into a border at the sides ; the disk gibbous towards 

 the apex, overhanging and concealing the head from above. 

 Elytra ovate, convex, closely applied to the prothorax ; the 

 epipleurae indeterminate. Legs moderate ; femora not thick- 

 ened ; tibia? subfusiform, scarcely compressed ; tarsi with the 

 terminal joint as long, or nearly as long, as the rest together. 

 Pro- and nicsrtstcnia sim])le. Metasternum short. 



This genus difl'ers from Orcopagio [antCj vol. iii. p. 30) 



