STENOCEPHALID^E, 141 



reflexed. Underside convex ; last segment in cut out at the sides, 

 and posteriorly, before the margin, constricted ; in $ , the 5th seg- 

 ment is shortest in the centre and raised; the 6th segment flat- 

 tened at the sides, and in the centre drawn into an angulated ridge ; 

 the anterior margin sloping on each side obliquely ; posterior margin 

 concave. Genital segments ; above, in <, one large, globose, clasped 

 at the sides by the long points of the 2nd segment: in ? , one segment 

 is visible, short, narrowed posteriorly, and with the posterior 

 margin short and slightly emarginate ; beneath, in ^ , as on the 

 upper side ; in ? , in the centre is one short plate, which appears to 

 be divided into 2 by a strong ridge, the posterior margin concave, so 

 that 2 points project ; at the base, on each side, the 2nd segment 

 appears as an angular plate, the point of which is shorter than the 

 central bilobed plate. 



Species 1. STENOCEPHALUS AGILIS. 



CIMEX AGILIS, Scop. Ent. Cam. 126, 366 (1763) ; Schrk. F. B. ii, 82, 



1125 (1801). 

 NUGAX, Fab. Sp. Ins. ii, 366, 171 (1781) ; Rossi, F. E. ii, 246, 



1333 (1790). 

 LYGJEUS NUGAX, Fab. E. S. iv, 162, 93 (1794) ; Wolff t Ic. Cira. 30, t. 3, 



fig. 30 (1800). 



COREUS NUGAX, Fab. S. E. 200, 42 (1803) ; Lam. Hist. Nat. iii, 495, 4 

 (1816) ; L. Duf. Rech. 37, 4 (1827) ; Schitt. Beitr. 

 48, 11, t. 5, fig. 2 (1829). 



DICRANOMERUS NUGAX, Hahn, Wanz. i, 22, t. 3, fig. 13 (1831). 

 STENOCEPHALUS NUGAX, Burm. Handb. ii, 328, 1 (1835) ; Ramb. F. And. 



ii, 129 (1842). 

 AGILIS, Fieb. Europ. Hem. 223, 145, 1 (1861). 



Brown-black, with a ground colour of ochreous showing through, 

 covered with fine, round punctures. 



Head smooth, black. Antenna; 1st joint black; 2nd, the base 

 narrowly, the apex broadly black, the remainder yellow with a faint 

 brown ring in the centre ; 3rd and 4th black, narrowly yellow at the 

 base. Eyes and Ocelli black-brown. Rostrum piceous, 1st joint 

 pale yellow ; the sides of the rostral channel yellow. 



Thorax. Pronotwm brown-black on an ochreous ground colour, 

 darkest in front, finely punctured, the tip of the hinder angles 



