Mr. W. W. Saunders on Species of Ceria. 63 
XI. On the Species of the Genus Ceria, Fab. By 
W. W. Saunpers, Esq. F.L.S. &c. 
[Read 4 June, 1843.] 
Tue genus Ceria was established by Fabricius for the reception 
of the Musca conopsoides of Lin., the specific name of which he 
changed to C. clavicornis. This species then, which has the 
abdomen cylindrical and slightly subclavate, I take to be the 
typical form of the genus, while those with the abdomen decidedly 
clavate, the first joint being slender, I shall treat as subtypical. 
Of the typical species three are described, all inhabiting Europe: 
—the C. conopsoides, subsessilis, and vespiformis ; to this I propose 
adding two more species, the C. intricata, from the same quarter 
of the world, and C. ornata, from the north coast of New Holland. 
Of the subtypical species two are described, the C, Javana, 
Wied., from Java, and C. Eumenioides, W. W. Saund., from northern 
India; to which I have to add, as new species, the C. Gambiana 
from Gambia, and C. breviscapa from Port Philip, New Holland. 
A tenth species is described by Wiedemann, in his ‘* Aussereuro- 
paische Zweifleugelige Insecten,” under the name of C. afra, but 
no remark being made on the shape of the abdomen I do not 
know into which division to place it; the absence of any remark, 
however, leads me to suppose the species to range among the 
typical ones. The species at present known will therefore stand 
thus : 
Ist Division. Abdomen cylindrical subclavate. 
Ceria conopsoides, Lin. Europe. 
subsessilis, lig. Do. 
vespiformis, Lat. Do. 
intricata, W. W.Saund. Southern Europe. 
ornata, W. W. Saund. North Coast of New Holland. 
afra, Wied. Cape of Good Hope. 
2nd Division. Abdomen decidedly clavate. 
Ceria Javana, Wied. Java. 
Eumenioides, W. W. Saund. N. India. 
Gambiana, W. W. Saund. Gambia. 
breviscapa, W. W. Saund. New Holland. 
Thus it appears that the genus Ceria is only known at present 
to inhabit the Old World and New Holland; four species being 
from Europe, all typical, two Asiatic, two African, and two from 
New Holland. 
