200 Rev. Mr. Karsy’s Account of the Ammoptila, 
Collum infundibuliforme {w). 
Thorax fabcompreffus poné alarum infertionem elongatus (x). 
: Scutellum obfoletum. 
Ale planz, venofie, anaftomofi obfoleta. 
Abdomen petiolatum glabrum, acu/eo in foeminis recondito. 
Pedes longi, graciles, fetofi(y). Femora apophyfibus biarticulatis 
infidentia (z). Tidiarum pofticarum {pinulz interiores uno 
latere peCtinate (2). Zarfi quinque-articulati. 
Color niger, abdominis cingulo ferrugineo. 
Many of thefe characters are peculiar to this genus, particularly 
the form of the rofrum, maxilla, collum, and the pectinated 
Jpinule of the pofterior tibia. Even colour, fo various in other 
genera, in this feems characteriftic. To the above marks it might 
be added, that, in all the fpecies I am going to defcribe, the under 
fides of the pofterior tie are covered with a {hort pale down. 
CHARACTER ESSENTIALIS. 
Rofrum conicum inflexum, linguam bifidam exerens. 
Antenne filiformes in omni fexu, articulis f{abquatuordecim. 
(w) Tab, XTX. No. I. fig. 7. 
(x) That part of the thorax which is behind the wings, I believe I fhall name upon a 
future occafion the Metatherax, as it is feparated in hymenopterous infects both from the 
thorax and fcutellum by a future, and in defcriptions often requires diftin® notice. 
(y) Fig. 8. (z) Fig. 8. a. 
(a) Fig.10. Iconjeture that this peéten is ferviceable to the infects of this genus in 
the excavation of the little burrows, where they depofit the animal to which they have 
committed an egg. When with their hind legs they difipate (rufpando) the little heap 
of fand from the mouth of the burrow, which they had feratched with their fore ones 
from its bottom, this pe€ten will prevent the grains from pafling between this {pine and 
the bafe of the tarfus, which is alfo pe¢tinated, although lefs vifbly. Fig. 9. a. 
; Ocul 
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