264 INSECTA, 
approximated to the following ones by the length of their paraglosse, 
or lateral divisions of the labium, which almost equals that of the 
labial palpi. 
Mevecra, Lat,—Crocisa, Jur., 
Where the maxillary palpi have five or six distinct joints *. 
Crocisa, Jur., 
Where they have but three, and where the scutellum is prolonged 
and emarginated f. 
Ox, Kliig, 
Where the labrum forms a long square, and is not semi-oval, as in the 
preceding subgenera, and where the maxillary palpi are wanting, or 
at least reduced to one very small joint {. 
The last of the solitary Apiariz have the first joint of their poste- 
rior tarsi dilated inferiorly on the outer side, so that the following 
joint is inserted nearer the inner angle of the extremity of the pre- 
ceding one than to the opposite angle. The outer side of this first 
joint, as well as that of the tibia, is densely crowded with thick hairs 
forming a sort of brush or tuft, particularly in certain species foreign 
to Europe; and thence the term Scopulipedes, which in my Fam. 
Nat. du Régn. Anim., I have given to this last division of the soli- 
tary Apiariz. The under part of their abdomen is naked, or at least 
destitute of a silken brush. The number of cubital cells, with the 
exception of a few species, is three, of which each of the two last re- 
ceives a recurrent nervure. 
Sometimes the maxillary palpi consist of from four to six joints. 
In these, the mandibles exhibit one tooth at most on the inner 
side. They fly with a hum from flower to flower, and with great ra- 
pidity. Several males have a bundle of hairs on the first and last 
joint of the intermediate tarsi. Others are distinguished from their 
females either by their long antennz, or by a more remarkable 
thickening of the two thighs of the second pair of legs, or by that of the 
two last. The anterior extremity of their head is frequently coloured 
with yellow or white. The outer side of the tibise and of the first 
tarsial joint of the posterior legs, in the females, is often densely 
pilose. They construct their nests either in the ground or in the 
cracks and holes in old walls. Several prefer grounds cut perpendi- 
cularly and exposed to the sun. The cells, in which they deposit 
their eggs, are formed of earth and shaped like a thimble, or like 
those of the Megachiles, and extremely smooth internally. They 
close the opening with the same material. 
* Lat., Gen. Crust. et Insect., IV, 171. For some other analogous genera, see 
the Encyc. Méthod., articles Parasites and Philéréme. 
ft Lat., Ibid., 172. 
{ Lat., Ibid., 172; Encyc. Méthod., article Oxryée. 
The genus described by MM. Lepeletier and Serville, under the name of 
Monceca, belongs to the division of the solitary brush-footed Apiarie, but I have not 
yet been able to verify its characters. The mandibles are narrow, pointed, and 
bidentated. ‘The radial cell is appendiculated. Each of the second and third 
cubitals receives a recurrent nervure. The posterior tibie are terminated by two 
spines, the inner one serrated. This subgenus approaches Macrocera and Epipicharis. 
