of some New Species of Hymenopterous Insects. 399 
Genus CuHaticopoma. 
Chalicodoma ceelocera, Smith. (Pl. XXI. fig. 7.) 
This species was described in the Catalogue of Apide, pub- 
lished by the Trustees of the British Museum; it was there in- 
cluded in the genus Megachile; subsequently Herr Gueinzius 
forwarded from Port Natal both sexes of the insect and the nest, 
which proved it to belong to the genus Chalicodoma, which con- 
structs mud nests on walls, &e. The sexes are similarly coloured, 
black and pubescent, with the abdomen bright fulvous-red, except 
the basal segment, which is black ; the wings are dark brown; in 
the male sex, the antenne are clavate and hollowed out beneath, 
and the anterior tarsi are expanded as in the males of Megachile. 
Length A of an inch. 
EXPLANATION OF PLATE XXI. 
(All the figures are considerably magnified.) 
Fig. 1. Thaumatosoma Duboulaii, @; 1a, antenna. 
2. Tetralonia mirabilis, g, antenna. 
3. Lamprocolletes cladoverus, $; 3a, antenna; 3b, underside of antenna. 
4. Ctenocerus ramosus, g, antenna ; 4a, underside of ditto. 
5. Nomia Kirbii, @, antenna. 
6. Psammotherma flabellata, antenna ; 6a, underside of a few joints of ditto. 
7. Chalicodoma celocera, g, antenna; 7a, underside of ditto. 
