206 MONOGRAPHIA 



SUB-GENUS I. COLPOCEPHALUM. (Nitzsch.) 



SUB-GENERIC CHARACTER. 



Head broad, sometimes slightly panduriform, the anterior 

 separated from the posterior, by a deep orbital depression 

 on the lateral margin ; antennce short, but prominent, 

 pedunculate, terminated by a sub-globular or oval knob ; 

 mesothorax distinct, short, and narrow ; abdomen of ten 

 segments, oblong, oval, or ovate. 



1. COLPOCEPHALUM FLAVESCENS. 



Plate XVIII. Fig. 2. 



Fulvous, segments of the abdomen with darker trans- 

 verse bands ; head with a black orbital spot on each side. 



Colpocephalum flavescens. Nitzscb. Germ. Mag. iii. p. 298. Steph. Cat. 

 pt. ii. p. 333. Burmeister Handbuch ii. pt. ii. 438. Lyonet, Mem. du 

 Muse. torn. 18. p. 262. pi. 12. fig. 1. 



Pale, tawny-yellow, shining, and smooth ; head sub- 

 panduriform ; clypeus rotundate and entire, with two dark 

 marginal spots, orbital depression very deep, with a large 

 black trapezoidal spot before each eye, united by a chestnut 

 band to transverse black interrupted fascia at the occiput, 

 temporal margin very rotundate and convex, with several 

 long hairs, base truncate ; eyes prominent ; antennae with 

 the first joint thick, second considerably smaller and cylin- 

 drical, third cup-shaped and transverse, fourth the largest 

 and ovate ; prothorax short, transversely elliptical, with a 

 slight depression in the centre ; mesothorax very small ; me- 

 tathorax large, as wide as the head, sub-conical, base rotun- 

 date; abdomen with the sutures pale yellow, with long hairs, 

 the lateral margin of each segment deep tawny, sometimes 

 approaching to pitchy brown ; legs pale tawny -yellow, rather 

 stout, apex of the femora with a dusky spot, anterior femora 



