502 ANTHOCORINA. 



The undeveloped form (Xylocoris rwfipennis, L. Duf.) is common 

 under bark. It differs from the developed form in the absence of 

 the membrane of the elytra, and by the corium being short, obliquely 

 truncate, and of a yellow-brown colour. It has been considered a 

 distinct species until identified as the undeveloped form of Xylocoris 

 bicolor, Scholtz, by Dr. Fieber (' Wiener Entomol. Monatsschrift,' 

 1863). 



Genus 6. TRIPHLEPS, Fieb. 



Head broad, short. Face short, the end obtuse ; central lobe 

 broad; side lobes narrow, as long as the central lobe. Antenna 

 thickest in the <$ ; 1st and 2nd joints stoutest, 2nd clavate ; 3rd 

 filiform, or obtuse fusiform ; 4th, slightly fusiform, compressed. 

 Eyes large, the whole length of the crown. Ocelli distant, inserted 

 close to the base of the eyes, large in the < , small in the $ . 

 Eostrum short, scarcely reaching to the mesosternum ; 1st joint only 

 ith as long as the head. 



Thorax. Pronotum broad, trapeziform ; anterior margin straight, 

 a little constricted ; anterior angles depressed, sides very slightly 

 rounded, the margin sharp, slightly reflexed, widest in front ; 

 posterior margin concave, sinuate towards the hinder angles ; disk 

 transversely callous on the 1st half, with a transverse depression 

 behind the callosity, mostly deepest outwardly ; posterior half flatter. 

 Scutellwm large, deflected from the base into a wide, deep, trans- 

 verse fovea in the middle. Elytra ; anterior margin reflexed, slightly 

 rounded as far as the base of the cuneus, where it is constricted ; 

 Embolium not wide ; claval suture depressed ; Cuneus and Membrane 

 deflected posteriorly ; membrane with 3 nerves. Sternum ; Meso- 

 sternum anteriorly compressed in the middle to a point, with a deep 

 hollow on each side of it ; sides compressed ; disk hindwardly convex, 

 the middle of the posterior margin deeply notched ; Metasternum 

 cordate, short, broad, convex, the margin reflexed. Legs rather 

 short and stout ; tarsi short ; 3rd joint longest. 



Species 1. TRIPHLEPS NIGER. 



SALDA NIGRA, Wolff, Ic. Cim. fig. 161 (1804). 

 TRIPHLEPS NIGER, <J, Fieb. Europ. Hem. 140, 2 (1861). 



Black, shining. Antennae short and stout ; corium in the $ more or 

 less piceous. Leys black ; tibiae ; 1st pair only yellow. 



