168 Mr. G. C. Champion on Chauliognathinas. 



forms, the outer Umb always remaining flavous in C. histrio 

 and black in C. nigriceps. The aedeagus of these insects 

 is very similar in structure. The specimen figured (Plate III, 

 fig. 16), from the Oxford Museum, is intermediate between 

 the C. obliquus and C. apicalis of Gorham. 



Explanation of Plates III — VIII. 

 [See Explanation facing the Plates.] 



