130 MR. CLAUDE MORLEY ON AFRICAN 



(11) 20. Face in-egulavlj^ punctate ; scutellum longer tlian 



basally broad ; hind tarsi entirel}' black 10. col life r Movh 



(2) 21. Head abruptly declivous bebind eyes, temples 



obsolete; hind tarsi white-banded 11. cothnriiator Mori. 



(1) 22. Plagellum not white-banded ; metanotal areola 



well defined. 

 (24) 23. Metaiiotuni laterally black ; areola dull ; legs all 



testaceous 12. geniinator Mori. 



(23) 24. Metanotuni immaculate ; areola shining ; bind 



tarsi black 13. areolator Mov\. 



1. LUTEA Cain. 



Only known from the south of the Continent, in the Cape and 

 Natal ; and appai'ently not extending far noi-th, since I liave seen 

 none of the present genus with entirely black hind tibije from 

 Rhodesia, &c. Cameron's generic diagnosis is drawn entirely 

 from the $ , as I have pointed out (Ann. S. Afr. Mus. xvii. 1917, 

 p. 195). I possess the species from Zululand. 



2. DBBILITOR, Sp. n. 



A small, pale, debilitant form, differing from the remainder of 

 the genus in its paler coloration, proportionately shorter antenna? 

 of but 8 mm., the peculiarly small head with black ocellar region, 

 the shorter legs and, especially, in the weak lateral scutellar 

 carinse, which do not extend to the apex. Length, 10 mm. 

 S only. — The unique type was captured at Howick in Natal by 

 J. P. Cregoe, and presented to the British Museum in 1904. 



3. ROTUND ATOR, Sp. n. 



This is the first of a series of extremely closely allied species, 

 which I find to differ inter se in nothing but the facial punctura- 

 tion, mesonotal colour and apical contour, mesonotal and scutellar 

 and postpetiolar structure, as well as occasionally the colour of 

 the hind legs. — The present insect has the face obsoletely punc- 

 tate ; mesonotum apically simple, with its sides rarely infuscate; 

 metanotum dull and not striate, its transcarina wanting, and 

 areola both I'ectangular and obsolete ; scutellum longer than 

 basally broad with its apex depressed, rounded, and not carinate ; 

 postpetiole laterally curved and abruptly explanate basally ; legs 

 testaceous, with the hind tarsi infuscate towards their apices. 

 Length, 12-15 mm. S $ . — It is recognised by the scivtellar and 

 postpetiolar structure, and by having the radial nervure distinctly 

 more reflexed than that of its congeners. — Quite the commonest 

 species of the genus in British East Afiica, where S. A. Neave 

 found males between 7000 and 8500 feet on the east slopes of 

 the Abei'dare Mountains towards the end of February 1911; 

 at 5000 to 6000 feet on the south slopes of Mount Elgon 

 in the middle of June ; and 500 feet higher among some 

 forest on the Nandi Plateau at the end of the preceding May. 

 But the majority are from Uganda, where C. C. Gowdey took it 

 in the Mabii'a Forest at Chagwe in the middle of July 1911; 



