150 INSECTA. 
In some this ligula is folded against the superior side of its sheath, 
as in AnpRENA(1), and Dasypopa, Lat.(2) The first joint of the pos- 
terior tarsi of the females of the latter subgenus is very long, and 
covered with long hairs, in the manner of a little feather. The su- 
perior wings in these two subgenera have but two cubital cells. 
A. flessz, Panz., Faun. Insect. Germ. LXXXV, 15; Andréne 
des murs, Reaum., Insect., VI, vi, viii, 2. Six lines in length, 
and with white hairs on the head, thorax, lateral margins of the 
last abdominal annuli, and legs; abdomen bluish-black; wings 
black, with a tinge of violet. 
The female excavates holes in tenacious sand, at the bottom of 
which she deposits a portion of honey, of the colour and con- 
sistence of a black and oily grease; it has a narcotic odour. 
Common in the environs of Paris. 
In the others the ligula is straight, or slightly bent under at its 
extremity. Such are SpuecopeEs(3), Haticrus(4), and Nomia, Lat.(5) 
Here also the maxillz are more strongly geniculate than in the 
Andrene. There are always three closed cubital cells. 
The male Sphecodes have knotted antenne; their ligula, as well 
as that of the females, is almost straight, and its divisions are nearly 
equal in length; that in the middle is much longer in Halictus and 
Nomia. The female Halicti have a longitudinal cleft at the poste- 
(1) Lat., Gener. Crust. et Insect., IV, 150. The species which in my Gener. 
Crust. et Insect., p. 151, I have called /agopus, and three others from the Cape of 
Good Hope, being removed from the ordinary Andrenz by the number of their 
complete cubital cells, which is but two instead of three, as well as by some other 
characters, have been erected by Messrs Lepeletier and Serville—Encyc. Méthod. 
—into a new genus to which they have given the name of ScrartrR. 
(2) Lat., Ibid. 
(3) Lat., Ibid., Messrs Lepeletier and Serville have formed a new genus—En- 
cyc. Méthod.—allied to Sphecodes, under the denomination of Raataymus— 
formerly Colax—but differing from it in the projection of the scutellum, and in the 
third cubital cell, which receives the two recurrent nervures. Besides this, the 
hooks of the’ tarsi are entire. They quote but one species, which is found at 
Cayenne. : os 
(4) Lat., Ibid. For the habits of these Insects, see the excellent Memoir of 
M. Walckenaer, quoted under the article Meloe. 
(5) Lat., Ibid. See Encyc. Méthod., article Nomie. 
The tenth volume of the part relative to Insects of this important work also 
contains several other articles by Messrs Lepeletier and Serville, respecting the 
Insects of this family. We would particularly notice that of the Parasites. Some 
of them go to establish new genera, but as we have not been able tc compare 
their characters with sufficient care, we are compelled to omit or barely mention 
them. 
