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the anterior edge is plain. The dorsal surface of the propodeum 

 with a longitudinal, médian groove bordered on each side by a strongly 

 raised carina and extending from the base of the propodeum to the 

 apex of the dorsal surface where it ends in a short, sinuate, strongly 

 raised, transverse carina, 



Smicromyrme (Trispilotilla) af ricana (André). 



Female. Clypeus : basai field flat, with a preapical, short, transverse 

 keel which does not overhang the disk below it; the disk itself but 

 weakly margined on the sides. Carina of the first sternite divided by 

 a narrow notch into an anterior and a posterior, much longer tooth. 

 Propodeum separated from the thorax proper on its dorsum by a 

 smooth, curved, weakly impressed line. 



Maie. Clypeus with its upper portion elevated, flattened, with 

 long black hairs, ending above in an acuminate upward production 

 between the antennae; the elevated portion flaring out widely below 

 into two crescent-like arms, the acute tips of which end in a sharp, 

 rectangularly terminated carina; within the arms of the crescent the 

 clypeus has below a large, sloping, highly polished, impunctate area 

 which lower turns forward toward the front edge of the clypeus; the 

 anterior edge is more or less truncate, broadly beveled, punctured 

 and hirsute. Dorsal surface of propodeum with a médian, longitudinal 

 groove, bordered on each side by a prominent carina obsolète at the 

 base; ending posteriorly at the junction with the posterior surface in 

 the spreading arms of a V-shaped carina, the stem of which extends 

 rather weakly along the médian line toward the pétiole, and the arms 

 of which are short, but strongly raised. 



Smicromyrme (Trispilotilla) achcron (F. Smith). 



We hâve seen a maie from Elgon District, Kenya Colony (Dr. 

 Bayer. — Congo Muséum). In this the clypeus is of the gênerai 

 type of africana, but the superior raised portion is densely covered 

 with erect, black bristles which obscure its surface, the arms of the 

 crescent are straighter and terminate more in a rounded ridge than 

 in an abruptly truncate carina; médian portion of the crescent de- 



