Classification of the Coleopterous family Endonwjchidae. 5 



reaching Uganda in sucli force, the genus should have found 

 tJiere an almost absolute barrier to its further advance. It 

 is also a striking illustration of the fact, confirmed by all 

 my study of Uganda Cloleoptera, that the beetle-fauna of 

 that region is almost entirely West African and shows 

 remarkably little connection with that of any other part of 

 Eastern Africa. 



All the species of Trycherus so far known are included 

 in the following Table — 



A. Base of the pronotum not margined. 

 B. Elytra elongate. 



C. Extremities of the elytra slightly 



produced rex, sp. n. 



c. Extremities of the elytra not pro- 

 duced. 

 D. Abdomen tuberenlate {^) or 



grooved (9) (ingoJciisis Gorh. 



d. Abdomen without tubercles or 



groove ]\!-flnviis, sp. n. 



b. Elytra short and ovate. 



E. Extremities of the elytra pale . ovatus, ^\). n. 

 e. „ „ „ dark . Jmter, sp. n, 



a. Base of the pronotum margined. 



P. Antennae slender, thoracic margins 

 narrow. 

 G. Elytra very convex, short and ovate. 



H. Black, with a pale median bar . tafiis, sp. n. 

 h. Pale markings not confined to 

 median bar. 



J. Shoulders dark erniijtoides Gerst. 



j. ,, not dark .... t)i/asciatiis Gerst. 



g. Elytra elongate. 



K. Elytra with pale longitudinal lines. 

 L. Pale markings uniting to form a 



posterior ring .... josej)lms Duv. 

 1. Pale markings not uniting . . hydroporoides Gorh. 

 k. Elytra without longitudinal lines. 

 M. Elytra with pale apices. 



N. Elytra elongate, not very 

 shining. 

 O. Pronotum not pale at the 



sides appendiculalus Gersi. 



o, Pronotum pale at the sides. 



