neio Species of Diploptera. 51 



Lahns macuUcollis, Cam. L c. p. 18 L (1910). 



Labus adelphus, AL-Waldo, Ann. & Mag. Nat. Ilist. (8) vili. 

 p. 452 (1911). 



Labus crassinoda, Cam. 



Eumenes crassinoda, Cam. /. c. p. 181 (1910), certainly be- 

 lonijs to this fjenus. 



Eumenes, F. 



{Eumenes errjthrospila, Cam. /. c. p. 178) = Eumenes 7naxiUosa, 

 de Geer (1773). 



(Eumenes meruensis, Cam. /. c.'p. 17 6) = Eumenes lepeletieri, 

 Sauss, (18o2)- 

 The tubercles are present on the petiole of Cameron's 

 type, notwithstanding his assertions to the contrary ; colour 

 distinctions are valueless in this variable species. 



{Eumenes vnrivenlris, Cam, /. c. p. ISO) = Eumenes fenestralis, 

 {Sauss. (1852) (type in British Museum). 



Khynchium, Spin. 



{Bhynchium thomsoni, Cam. /. c. p. 1^2>)=RhyncJdum grayi, 

 Smith, var. with rutbus markings. 



The two insects agree perfectly in size and structure, and 

 both have the clypeus apically carinate. 



(Rliynchium usamharaense, Cam. L c. p. 183, ? )= ? R.grayi^ 

 subsp. neavei, M.- Waldo, Ann. & Mag. Nat. Hist. (8) 

 viii. p. 456 (1911), <J. 



Cameron's species is certainly no more tlian a subspecies 

 of R. groyi, aTid is almost certainly the female of the subsp. 

 neavei, niihi, from Nyasaland. In colour tho two insects 

 entirely agree, and neavei has the apex of the clypeus without 

 cariiiEe, as in R. usamhavnense. The insect described by 

 Cameron as the male of i?. usambaraense is possibly that of 

 R. thomsoni, in which the apical part of the clypeus is some- 

 what carinate. 



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