METACANTHID^. 147 



Genus 2. MRTATROPIS, Fieb. 



Head. Crown quadrangular, in front a large nodule prolonged 

 hindwardly in a keel, at the end of which, 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. Antennas 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 -J as long as the 1st, the 3rd nearly frds as long as the 

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

 Eyes large, oval, little projecting. Ocelli small, approximate, 

 inserted on the base of the head. Rostrum reaching beyond the 2nd 

 pair of COXSB. 



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

 trapeziform, almost hexangular by the hinder angles being cut off 

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

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

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

 convex, with a cross impression opposite the 2nd lateral 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 ; 

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

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

 at the base. Sternum ; 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 



