HYMENOPTERA. 263 
triangular, plane above, prolonged into a point at the extremity, in 
the females, and usually dentated in the males. 
These Insects approach the Megachiles, whilst the Stelides are con- 
nected with the Anthidia *. 
Other Apiarize, the Cuculine, similar to the preceding ones in 
their posterior tarsi, and in which, as in the latter subgenera, the 
labial palpi have the form of squamous sete, and the abdomen is 
destitute of a brush in both sexes, that are parasitical, like the Ceeli- 
oxydes and Stelides, sometimes almost glabrous and similar in co- 
lour to Wasps, and sometimes pilose in patches, have an elongated 
and truncated, or short and almost semicircular labrum, and narrow, 
pointed mandibles, unidentated at most on the inner side. The pa- 
raglossee are frequently long, narrow, and setaceous. The scutellum 
in several is emarginate or bidentated; in others it is tuberculous. 
They are the Nomad@ of Fabricius. Several of these Insects ap- 
pear early in the spring, flitting near the earth or about walls ex- 
posed to the sun, in order to deposit their eggs in the nests of other 
Apiariz. Itis this habit, analogous to that of the Cuckoo, which 
induced me to name them Cuculine, 
In some, almost always glabrous, the paraglossze are much shorter 
than the labial palpi. 
Sometimes the labrum forms an elongated triangle, truncated at 
the end, and inclined above the mandibles, There are never more 
than two complete cubital cells. 
AmmosatTeEs, Lat., 
Where the maxillary palpi are formed of six joints y. 
PuiterEemus, Lat.—Eretouus, Fab,., 
Where these organs have but two joints f. 
Sometimes the labrum is short, and almost semicircular or semi- 
oval. 
Errouus, Lat., Fab. 
Three complete cubital cells, and the maxillary palpi uniarticu- 
lated S. 
Nomapa, Fab. ' 
The same number of cubital cells, but the maxillary palpi are formed 
of six joints |]. 
Pasires, Jur.—Nomana, Fab. 
But two complete cubital cells. Their maxillary palpi are quadri- 
articulated {. 
The other Cuculine, in which the body is densely pilose in patches, 
the scutellum is often spinous, and where there are always three 
complete cubital cells, are removed from the preceding Apiariz, and 
* Lat. Gener. Crust. et Insect., IV, 166. 
+ Lat. Ibid., 169. 
* Lat., Ibid., Idem. 
§ Lat., Ibid., 172. 
|| Lat., Ibid., 169. 
 Lat., Ibid., 170. 
