56 D. S. FLETCHER 



o*. Genitalia (Text-figs. 69, 70). Gnathus one and one-half times as broad as greatest width 

 of cucullus, broadly incurved medio-ventrally and minutely scobinate ; a longitudinal, coarsely 

 scobinate band in distal half of valve ; arm of sacculus spatulate, of even width, scobinate at 

 tip and extending to mid-cucullus ; a setose digitate process medially at one-third valve ; vesica 

 with three cornuti, one stout, arcuate and tapered, one very slender and setose at apex, each 

 equal in length to greatest width of aedeagus, and one shorter cornutus with a curved, coarsely 

 serrate apex. 



$. Wings white, lightly irrorate and patterned with bister (PI. 7, fig. 260) ; hind wing with 

 weakly marked snuff brown shade distad of postmedial fascia ; both wings lightly irrorate with 

 warm buff, especially on medial and cubital veins. Underside of wings white, patterned with 

 fuscous (PI. 7, fig. 261). 



$. Genitalia (Text-fig. 71). Lamella postvaginalis slenderly produced, posteriorly narrowly 

 rounded ; lamella antevaginalis heavily sclerotized and bilobate posteriorly, anterior edge with 

 two folds sclerotized in a wrinkled and reticulate pattern ; colliculum rather longer than broad 

 with diamond-shaped sclerotized area at mid-anterior margin ; bursa copulatrix of almost 

 even width, posterior four-fifths sclerotized and ribbed, with a more heavily sclerotized disc 

 medio-anteriorly, anterior fifth membranous and slightly dilate. 



Measurements. $ 44-52 mm. ; $ 46-52 mm. 



The species is characterized externally by its large size and in the male by the 

 densely suffused, dark underside of the wings. Structurally, the shape of the arm 

 of the sacculus and the ornamentation of the vesica in the male genitalia and the 

 structure of the sterigma in the female genitalia are diagnostic. 



Though the sterigma in the female genitalia is considerably modified, the 

 scobination of the valve, the broad, scobinate gnathus and the long arm of the 

 sacculus in the male genitalia suggest an affinity with aculeata and with raphis. 



Distribution (Map 3). Guinea ; Ghana ; Nigeria ; Cameroun ; Congo (Leopold- 

 ville) ; Uganda. 



Material examined. Holotype $. Cameroun : N'long [Ngoulemakong], 18. i. 

 1953 (R. P. Boetsch), genitalia slide No. C.H.4028 in coll. Herbulot, Paris. 



Guinea : Soundedou, Nr. Macenta, 1600 ft., 13. v. 1926 (C. L. Collenette), 2 <$. 

 Ghana : Wassaw dist. 45 miles inland from Sekondi, 1 <$. S. Nigeria : Ilesha 

 (L. E. H. Humfrey), 2 <$. Cameroun : Batouri, hi. 1958, 1 £ in National Museum of 

 S. Rhodesia ; Bitje, Ja River, x., wet season (G. L. Bates), 2 <$ and Johann-Albrechts 

 Hohe, 1898 (L. Conradt), 1 $ in British Museum (Natural History). Congo 

 (Leopoldville) : Coquilhatville, 9JX.1955 {Dr. M. Fontaine), 1 <$ ; Equateur, 

 Bokuma, 20.xi.1911 (Rev. P. Hulstaert), 1 $ ; Eala, 14.lv. 1936 (/. Ghesquiere), 1 £ ; 

 Uele, Paulis, 2-4.iv.1956 (Dr. M. Fontaine), 2 $ ; ibid., 13. xi. 1956, 1 $ ; ibid., 

 5.VU.1958, 1 $ ; Uele-Itimbiri, La Kulu, 15. iv. 1930 (/. Van den Branden), 1 $ ; 

 Sankuru, Katako-Kombe, 25.iv.1952 (Dr. M.Fontaine), ig ; ibid., 18.vi.1952, 1 $ ; 

 ibid., 6.1X.1952, 1 <$ ; Lusambo, 17.vi-5.vii.1949 (Dr. M. Fontaine), 1 $ ; ibid., 

 2.viii-3.ix.i950, 3 <$, 3 $ ; Kasai, Luluabourg, 18. vi. 1953 (Dr. M. Fontaine), 1 <$, all 

 in Musee Royal de l'Afrique Centrale ; W. Kivu, Upper Lowa Valley, Nr. Masisi, 

 5000-6000 ft., ii.1924, wet season (T. A. Barns), 1 <$ in British Museum (Natural 

 History) . 



Uganda : Masaka, Katera, Sango Bay, x.1960 (R. H. Carcasson), 1 $, in 

 Coryndon Museum. 



