434 Mr. J. Scott on new Genera and Species 



base of the first pair of legs gently rounded ; posterior margin 

 in the centre considerably recurved. Legs : coxa?, first pair 

 in front armed with two teeth : thighs, first pair incrassated, 

 fusiform, with two rows of teeth on the underside, each row 

 consisting of seven or eight ; three of the teeth on the inside 

 row longer than any of the others, and the one next the apex 

 longest : tibiae straight ; first pair dilated at the apex ; inner 

 margin with four or five spines : tarsi, first joint of the 

 third pair more than twice the length of the second and third 

 together, which are very short. 



The shape of the head and pronotum, and form and arrange- 

 ment of the nerves of the membrane, associate this genus 

 with Diplonotus more than with any other I know ; but 

 the toothed coxae, and different number and disposition of 

 the teeth on the anterior thighs, and straight anterior tibiae are 

 sufficiently chai*acteristic to separate the one from the other. 



Metochus abbreviatus. 



Dull black, somewhat thickly punctured. 



Head black, with a few longish erect pale hairs ; very finely 

 punctured, except a small space round the ocelli. Face : central 

 lobe produced considerably in front of the side lobes. Antennas 

 black ; second joint as long as the third and fourth together ; 

 base and apex of the first and second joints and base of the 

 third very narrowly brownish yellow ; fourth, basal half 

 yellow or yellowish white, except a narrow black ring at the 

 base. Eyes black. Ocelli red. Rostrum yellowish or pale 

 brownish yellow, fourth joint piceous. 



Thorax. — Pronotum black ; anterior portion very convex, 

 finely and sparingly punctured ; anterior margin with a narrow 

 collar, joined to which is a very short, central, longitudinal 

 keel ; disk posteriorly coarsely punctured, more or less mottled 

 with brown, and with a distinct central keel ; sides at the 

 constriction much depressed, the margin somewhat acute, and 

 terminating in a fovea before reaching the posterior angle, so 

 that when viewed from above, in certain positions, it appears 

 to be notched; posterior angles raised into an unpunctured 

 callus. Scutellum black, irregularly punctured ; apex yellow. 

 Elytra black. Clavus : inner margin and nerve interiorly 

 with a row of black punctures, between which is a central 

 row extending from about in a line with the apex of the scu- 

 tellum to the lower edge of a yellow spot near the base ; lower 

 half of the scutellar margin yellowish ; claval suture yellow, 

 and with a row of punctures on either side. Corium yellowish 

 at the base, black-punctured ; anterior margin yellow for a 



