E. BERGROTH, HEMIPTERA FROM BRITISH EAST AFRICA. 21 



united about the middle of the clavus instead of near the apex ; 

 also it is not the exteriör, but the interiör vein of the clavus 

 which is granulate, and that much more widely», thus in all 

 these points agreeing with Paranigrus. From Distant's 

 figures of Phaconeura Fletcheri (Rhynch. Brit. Ind. VI, p. 72) it 

 is clear that this species belongs to Paranigrus. It differs 

 from the African species by considerably smaller size, much 

 shorter mesonotum (compared with the combined length of 

 the head and pronotum), much less evenly infuscated tegmina, 

 and (if the figure is correct) by ha\'ing the perpendicular 

 diameter of the eye longer t han the horizontal and the inferior 

 margin of the eye more rounded t han truncate. 



Kirkaldy referred Phaconeura and Suva Kirk.^ to the 

 Derbinae and placed them near Nisia Mel. and Kermesia Mel., 

 two genera which were described as Derbinae but which 

 Melichar and Matsumura låter transferred to the Achilinae. 

 They were placed in the Derbinae also by Distant and Sciiu- 

 3LACHER. All these authors have overlooked that the above 

 four genera have three ocelli, as correctly pointed out by 

 Muir, and belong to the Cixiinae, being allied to Anigrus 

 Stål. Nisia atrovenosa Leth., the type of the genus, was 

 described as a Meenoplus by Lethierry and in founding his 

 genus Nisia Melichar did not state by what characters it 

 thffers from Meenoplus Fieb. As Muir (Ent. Bull. Hawaii. 

 Exp. Stat. 12, p. 81) says that he is unable to separate Nisia 

 from Meenoplus, Lethierry was after all right in placing his 

 species where he did, and Nisia is to be cited as a synonym 

 of Meenoplus. According to Muir also the African genus 

 Inxwala Dist., placed by Distant in the Derbinae, has a median 

 ocellus and belongs to the Cixiinae. I have not seen the descrip- 

 tion of Inxivala and do not know if it be distinct from Anigrus, 

 but as Distant did not place Phaconeura Fletcheri in Inxivala, 

 I suppose the latter genus can not be the same as Paranigrus. 



P. S. — Since this paper was sent to the press I have through 

 the obligingness of Dr G. Marshall received a complete 

 account of the genus Inxwala Dist. with figures. From these 

 it is clear that my above described genus Parayiigrus is still 

 more aUied to the African genus Inxwala than to Phaconeura. 



^ The tegmen figured by Kibkaldy (Leaf- Hoppers, Suppl,, p. 166, 

 fig. 3) as being that of the Derbine genus Phaciocephalus Kirk. is accord- 

 ing to Muir th© tegmen of Suva. 



