398 H. Friese, 316 



and punctured, armed with 4 teeth; clypeus broad, slightly 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 polished, 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 1. segm. concave, smooth and shining. L. 8 mm. 

 Pretoria. 



Megachile trichora Vach. 

 1903 Megachile trichora Vachal, J^, 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. 



<?. Quoad colorem similis, barba clypei luteo-grisea ; pilis brevibus femorum post. nullis; 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 rappeile M- chrysorrhoea Gerst., me parait etre l'espece d'Angola 

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



5 ? et 1 o 7 de N'Doro, X— XI 98, coli. VACHALe t 1 ? de N'Kogo (BOUYSSOU), au Mus. de Paris. 



Kongo. 



Megachile unifasciata Rad. 

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



?. Nigra, vertice thoraceque fulvo-pilosis, abdominis segmenti 1. 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 1. 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 utra Vach. 

 1903 Megachile utra Vachal, °., in: Ann. Soc. ent. France, Vol. LXXII, p. 370. 



d\ Nigra, caput, truncus, segmentum dorsale 1, ventris saltem maxima parte nigro pilosa, segmenti 

 dorsalis 2 parte apicali et segmenta 3 — 6 lana grisea aliquando parce fulvescente diluta; alae hyalino fumatae, 

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



