METACANTHIDiE. 147 



Genus 2. — Metatropis, Fieb. 



Head. — Croion quadrangular, in front a large nodule prolonged 

 hindwardly in a keel, at the end of wliich, at the base of the head, is 

 a depression between the ocelli ; Face deflected, broad, curved, all 

 the lobes broad, the central one much the longest. Antennce inserted, 

 above the front of the eyes, filiform ; 1st joint very long, at the top 

 gradually clavate ; 2nd and 3rd at the top scarcely thickened, the 

 2nd nearly ^ as long as the 1st, the 3rd nearly f rds as long as the 

 1st ; 4th long- fusiform, f the length of the 2ud and twice as thick. 

 Fi/es large, oval, little projecting. OcelU small, approximate, 

 inserted on the base of the head. Bo strum reaching beyond the 2nd 

 pair of coxfe. 



Thorax thick : Pronohcm greatly deflected to the front, long- 

 traj^eziform, almost hexangular by the hinder angles being cut ofi" 

 straight ; the sides 3 times constricted, the 1st slightly, immediately 

 behind the anterior margin, the 2nd deeply at about \ of the length, 

 tlie 3rd just before the hinder angles ; disk in front but slightly 

 convex, with a cross impression opposite the 2ud latei'al con- 

 striction, in front of which are 2 small nodules ; hinder portion very 

 convex, but hindwardly, flatly and broadly deflected to the posterior 

 margin ; up the centre is a raised line gradually increasing in height 

 till it forms a rounded ridge which decreases somewhat suddenly, 

 and ends before it reaches the posterior margin ; within each hinder 

 angle, in a line with the top of the central ridge, a large nodule ; 

 posterior margin slightly concave. Scutellum long, narrow, trian- 

 gular, the base convex, with an obtusely pointed nodule in the centre. 

 Elytra in repose horizontal, narrower in the middle than at the base, 

 and wider behind ; Corium narrow, diaphanous, with strong nerves, 

 the posterior margins not meeting at the end of the clavus, but 

 diverging, nearly straight, and prolonged to a long point ; Membrane 

 transparent, broad, hindwardly rounded ; the 1st nerve short, curved ; 

 tlie 2nd long ; the 3rd springs feebly from the 4th, at about ^ its 

 length, but is stronger towards its end ; 4th and 5th joined together 

 at the base. Stermim ; rostral channel broad. Legs filiform, the 

 top of the thighs gradually incrassated ; tarsi; 1st joint as long as the 

 other 2 together. 



Abdomen long-oval, narrow at the base, above flat, beneath 



