KHARTUM 
411 
0. lamellatus , Oliv., one of each sex was brought home; a female 
Diodontus minutus, Fabr., quite justifies its name. 
The difficult genus Pompilus was represented by ten males of a 
species of the Aporus group. 
Ho Social Wasps were met with; on the other hand, the solitary 
Eumenes was much to the fore, by far the commonest species being 
the Egyptian blue-black E. tinctor, of which I took ten males and 
four females; of E. dimidiatipennis and E. lepelletieri , Sauss., I took 
one male each; of E. esuriens, a truly hungry-looking, long-waisted 
beast, I took one of each sex. Of the large black, purple-winged 
Bhynchium (?) synagrioides, Sauss., with its orange-tipped tail, I took 
two of each sex; it frequented the flowers of Tecoma; of B. cyano- 
pterum, Sauss., I found a solitary male at Acacia flowers; of B. niloticum , 
Sauss., I took two males at Khartum, another at Atbara junction 200 
miles to the northward. A female Odynerus (Lionotus) belonging to 
the parvulus group may possibly prove to be a new species. 
The handsome and conspicuous Carpenter-bees were as common 
in the Sudan as in Egypt, but in addition to the strikingly dimorphic 
Xylocopa aestuans , with its very different males and females, five males 
of X taschenbergi, Yachal, turned up at Khartum. 
Of the Leaf-cutters several species were met with. Two Megachile 
flavipes, Spin., were taken in the western suburbs, also at Calotropis, 
near the rifle ranges; this is a small species which I afterwards found 
quite common in Egypt; but M. albocincta, also an Egyptian 
species, was the commoner at Khartum, frequenting the flowers of 
Calotropis and Tecoma , it is not, however, by any means easy to catch, 
still I secured three males and five females ; of M. argentata , Fabr., 
I took two males and a female, it also frequented Tecoma ; lastly at 
Calotropis and other flowers I took three specimens of M. (?) patel- 
limana, Spin, (or possibly a new species). 
There were but two species "of Anthidium among my captures, viz. 
tessellatum , Klug, of which I took two females ; and (?) karschi, Friese, 
of which I took a male, at least a bee which Mr. Morice says is probably 
the undescribed male of that species. I also got several specimens of 
both sexes of a Podalirius which Mr. Morice says is near bimaculatus, 
Panz., possibly byssinus, Klug, but that there perhaps may be more 
than one species among them. Three males of Ceratina tarsata 
turned up at Khartum. 
Among the most notable of the Bees was the large, handsome, 
black and white Crocisa nubica, Lepel. It was most often seen at the 
flowers of Tecoma or Acacia , especially near the tennis courts, but it 
was extremely hard to catch; in all I secured five males and two 
