NOTES ON COCCID-INFESTING CHALCIDOIDEA — III. 313 



Abdomen. The second, tergite bears on each side a narrow belt of small 

 refringent cells. The fifth sternite broad, acuminate, with a sUght, minutely 

 bilobed apical furrow ; on each half of the sclerite there are about 45 bristles — 

 20 more minute towards the base, the remainder mainly on the distal half. 



Length, over 1-6 mm. ; alar expanse, about 3| mm. 



Gold Coast : Aburi ; (a) reared from female of Lecanium sp. on coffee, 

 19. xii. 15, 2 9?; (b) reared from Lecmiium siibhemisphaericum Newst., sp.n.,* 

 on coffee, 27. xii. 15, 9 {W. H. Patterson). 



Type 9 in the British Museum (one of the pair {a) noted above). 



The species of Coccidoxenus appear to be numerous and closely related to one 

 another. The species just described should be knovsTi at once by the mandibles, 

 but unfortunately in few of the extant descriptions of members of the genus are 

 the mandibles referred to at all. 



Aethognathus afer, Silv. 



Aethogtudhus afer, Silvestri, Boll. Lab. Portici, ix, 1915, p. 352, figs. 13-14. 

 Described from Aburi, Gold Coast, the host being Stictococcas diversiseta, Silv. 



Aethognathus afer, var. cavilabris, no v. 



^ 9. Generally darker (distinctly blackish) than the West African race, from 

 which it differs little superficially except in the slightly coarser puncturation of 

 the vertex, e.g., in afer there are about 8 pimctures between the posterior ocelU 

 (6 in V. cavilabris) and 16 along the occipital edge (12 in v. cavilabris). 



Uganda: Entebbe, from Stictococcus dimorplms, 9.viii.l912, 2 ^^, 9$$ 

 (C. C. Gowdey). 



Type 9 in the British Museum. 



Fig. 2. Aethognathus afer, Silv., 

 var. cavilabris no v. ; labrum of $. 



I had determined the above material as A. afer, but on making complete 

 dissections found that the labrum (fig. 2) in both sexes lacked the conspicuous 

 median lobe of the West Coast form {loc. cit. fig. xiv, 4). Professor Silvestri tells 

 me that additional dissections of the t^^De material prove that the difference is 



* See below i). 3G3. 

 (C357) a2 



