— 217 — 



but also from André's description of this sex, based on a spécimen 

 taken in copula with the maie of the génotype, by the exeedingly 

 important fact that its first abdominal segment is transverse, entirely 

 sessile, and practically as broad as the second segment at its widest 

 part; nor is it at ail constricted from that segment. It is also différent 

 in other characters and is obviously not a Rhopalomutilla. We there- 

 fore believe that Bischoff misidentified the female of clavicornis 

 André, and we intend to treat further of the proper systematic posi- 

 tion of this spécimen in a forthcoming synopsis of the Mutillidae of 

 the Belgian Congo. 



Rhopalomutilla mlanjeana (Bischoff). 



Bilgian Congo : seven maies from Albertville, January 20, 1919 

 (R. Mayné). 



The spécimens agrée with Bischoff's very brief description. They 

 are decidedly larger than a maie of clavicornis (André). The wings 

 are darker with a slight purplish effulgence and the base hyaline in 

 the medial and submedial cells. Bischoff regards it as a subspecies 

 of clavicornis (André), but we believe that it is specifically distinct. 

 In addition to the différences already mentioned, the shape of the 

 latéral lobes of the seventh abdominal segment is quite charactïristic 

 and varies but little among the spécimens we hâve examined : seen 

 from the side, each lobe is a lamella broadened out in its apical half, 

 where its anterior margin is evenly curved, ending in an obtuse angle; 

 its posterior margin présents an obtuse projection separated from the 

 apex by a weakly concave line. The second tergite is decidedly more 

 depressed at the base than in clavicornis. Clypeus with a conical 

 tubercle on its middle line in its upper part; its apex with two small, 

 médian teeth. Length : 9 to 10 mm. 



Rhopalomutilla cristata (Bingham). 



Belgian Congo : one maie, Lukonzolwa, January 2, 1912 (J. Be- 

 quaert). 



The apical margin of the penultimate sternite is divided into three 

 subquadrate lobes by deep incisions. Thèse lobes are semi-mem- 

 branous and overhang a deep cavity. The latéral margin of the ulti- 



