70fi MR. R. E. TURNER ON 



but shorter tlian the third ; recurrent nervures received close to 

 the middle of the second and third cubital cells. 



Ilah. Johannesburg, Transvaal (Kohrow). Received from 

 Dr. Brauns. 



Nearly allied to adelogamia Turn, and diajjherogamia Sauss. 

 From the former it may be distinguished by the entii'ely black 

 head, and by the closer and more even puncturation of the head 

 and pronotum, the vertex being almost smooth in adelogamia; 

 from diapherogamia it may be distinguished by the much shorter 

 pronotum, the stronger and closer puncturation, and the coloxir of 

 the head. E. hova has the pronotum longer than in the present 

 species or adelogamia. 



The comb on the underside of the basal joint of the posterior 

 tarsi is present, but the teeth are few. The upper spur of the 

 hind tibise is strongly bent near the base. 



Elis (Mesa) adelogamia Turn. 



Plesia {Mesa) adelogamia Turn. Ann. & Mag. Nat. Hist. (8) i. 

 p. 503 (1908), 2 ■ 



Hah. Maseru, Basutoland ; Lichtenburg, Transvaal. 



This is nearly allied to E. aurifiua, but difiers as noticed in the 

 key. 



Elis (Mesa) ruficeps Sm. (PI. LXXXII. figs. 9, 10; 

 PI. LXXXIII. figs. 2, 4, 10, 15, 16.) 



Myzine ruficeps Sm. Cat. Hym. B. M. iii. p. 75 (1855), $ ; 

 Turner, Ann. & Mag. Nat. Hist. (8) i. p. 503, S ; Turner, Ann. 

 & Mag. Nat. (8) vii. p. 304 (1911), 6 2 ■ 



Elis (Mesa) ruficeps, subsp. atopogamia Sauss. 



Plesia (Mesa) atopogamia Sauss. in Grandidier, Hist. Madagascar, 

 XX. p. 244 (1892), $ . 



Plesia {Mesa) diapherogamia Sauss. ; Distant, Naturalist in the 

 Transvaal, p. 225 (1892), $ . 



Plesia {Mesa) disjuncta Turn. Ann, & Mag. Nat. Hist. (8) i. 

 p. 502(1908), c?. 



Elis {Mesa) ruficeps, subsp. atopogamia and diapherogamia Turn. 

 Ann. h Mag. Nat. Hist. (8) vii. p. 304 (1911), J $ • 



Hah. Zanzibar ; Nyasaland ; Transvaal. 



The colour-differences between ato^yogamia and diapherogamia 

 are not constant, though in the former the mesonotum is usually 

 i-ed and in the latter black. The wings of the male are darker in 

 specimens from Nyasaland than in those from the Transvaal. 

 A single male received from Harar, in S. Abyssinia, has the wings 

 entirely hyaline, slightly iridescent. 



Elis (Mesa) heterogamia Sauss. 



Plesia {Mesa) heterogamia Sauss. in Grandidier, Hist. Mada- 

 gascar, XX. p. 244 (1§92), 5 . 



Hah. Delagoa Bay ; Manica ; South Nyasaland. 



