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lvi 
cover the whole with an outer coating of mud: E. maxillosa 
with a granular one, Z. lepelletieri with an almost smooth 
one, whilst S. spirifex covers her cells with a patchwork, 
each patch being quite smooth and representing one 
pellet. 
“Sceliphron spirifex builds cigar-shaped cells, into which 
she puts fourteen to sixteen spiders, chiefly Epierids with a 
few Attids, the egg being laid on the first spider put into the 
cell. One of these wasps had her nest in a room, and when 
the doors were both closed went through a small hole at the 
side of the door. If one of the doors was open, she flew out 
through the large space of light, but whether it was open or 
shut, on entering she always negotiated the narrow and 
difficult passage through the small hole at the side, showing 
that she had not profited from experience of the outward 
journey. 
* Salius lynx. This Pompilid was seen hunting the lawns 
and banks of irrigation channels like a working spaniel. I 
have seen one try to tempt a wolf-spider from its lair by 
feeling with its fore legs, cat-like, round the edge of her hole. 
Next day I saw one pull an already paralysed wolf-spider 
some fifteen yards up a bank, through a hedge, and down 
a hole within a few inches of the Nile. She walked back- 
wards, pulling the spider head first. After some ten minutes 
a cricket came out of this hole. The wasp did not come out 
and the river rose above the spot during the night. 
* Rhyncus sp. Saw a pair copulating on a leaf some three 
feet from the ground. The male flew off afterwards with a 
wild vigorous flight and a loud buzz. Nest found in an old 
Dervish fort, with funnels about two to three inches long, 
turning downwards and at right angles to the hole in the wall. 
Megachile mephistophelica in some cases seemed to have 
usurped these funnels and lined them with her leaves. She 
might sometimes be seen peeping out of the end of a tube 
as if to see whether the coast was clear.” 
Mr. Mellor’s remarks gave rise to a discussion on the 
formation of nests by mud wasps, in which Messrs. Janson, 
Greene, Morice, and Dr. Marshall took part. 
Prof. T, D. A. CocKERELL made some observations on the 
