398 H- Fkiese, 316 



and punctured, armed with 4 teeth; clypeus broad, slightl}' convex, truncate anteriorly and with a well-marked 

 medial carina, which is produced upwards nearly to the anterior ocellus ; starting one on each side of the anterior 

 ocellus, 2 other vertical carinae run parallel to the medial one, but terminate at the base of the clypeus. Thorax, 

 the mesonotum gently convex, scutellum semicircular, with a sharp posterior free margin overhanging the post- 

 scutellum and median segment, the latter 2 smooth, shining and pohshed, not punctured. Wings hyaline, 

 nervures dark brown, tegulae black. Legs stout, apical Joint of the tarsi and claws deep yellowish-brown. 

 Abdomen rounded and very convex above, basal face of the i. segm. concave, smooth and shining. L. 8 mm. 

 Pretoria. 



Megachile trichora Vach. 

 1903 Megachile irichora Vachal, cf$, in: Ann. Soc. ent. France, Vol. LXXII, p. 365. 



?. Nigra, facie fulvidis, in vertice, clypei disco, mesonoti disco, segmentorum 2 — 3 basi plus minus 

 nigrescentibus, clypei margine barba rufa brunnea, trunco et segmento primo albido, segmentorum 2—3 fascia 

 apicali, segmentis 4—6 rufo pilosis, scopa rufa, basin versus obscuriore. Femora et partim tibiae postica pilis 

 brevibus rigidis fere capitatis albis. 



Alae fumato-hyalinae, basi dilutiore. 



Mandibulae sericeae dentes quatuor praeter angulum internum praebentes. Prototarsus 3 sat anguste 

 trapezinus; calcaria brunnea. L. 14 — 15 mm. 



S- Quoad colorem similis, barba clypei luteo-grisea ; pilis brevibus femorum post. nuUis; alis basi trans- 

 lucida. Lamina segmenti 6 rotundata in medio arcuatim sinuata. Segmentum ventrale 6 exsertum, in triangulum 

 obtusum, fere laeve. L. 13 mm. 



Cette Megachile, dont la coloration rappelle M. chrysorrhoea Gerst., me parait etre I'espece d'Angola 

 que Radoschkovsky a designee sous le nom de M. chrysomelina Gerst. dans Jörn. Sc. Lisb., 1891. 



5 ? et I d de N'Doro, X— XI 98, coli. VACHALe t i ? de N'Kogo (Bouyssou), au Mus. de Paris. 



Kongo. 



Megachile unifasciata Rad. 

 1881 Megachile unifasciata Radoszkowzki, 9, in: Journ. Acad. Sc. math. etc. Lisboa, Vol. VIII, p. 201. 



?. Nigra, vertice thoraceque fulvo-pilosis, abdominis segmenti i. fascia basali albida, scopa rufa, apice 

 nigro. L. 15 mm. 



Tete noire, garni de poils roux; les mandibules fortes et larges, 4- dentees, la premiere dent grande, 

 les suivantes petites et inegales; chaperon bombe au milieu. Corselet couvert de poils roux; Abdomen noir, 

 presque nu, luisant, seulement le i. segment est couvert de poils blancs jaunätres; en dessous la brosse noire 

 avec son milieu roussätre. Pattes noires garnies de poils roussätres qui dans certaines directions se changent en 

 poils dores; ailes faiblement enfumees. 



Angola (Welwitsch). 



Westafrika. 



Megachile titra Vach. 

 1903 Megachile utra Vachal, 5, in: Ann. Soc. ent. France, Vol. liXXII, p. 370. 



d- Nigra, caput, truncus, segmentum dorsale i, ventris saltem maxima parte nigro pilosa, segmenti 

 dorsalis 2 parte apicali et segmenta 3—6 lana grisea aUquando parce fulvescente diluta; alae hyalin© fumatae, 

 nervis brunneis in nodo costali fulvescentibus. L. 15 — 16 mm. 



