74 SPHECID&. 
rest gradually decreasing in length from the third, which is the 
longest of all; the face below the antenne covered with 
silver pile in the ¢ ; labrum almost entirely concealed by the 
clypeus, which is large, almost triangular, and generally covered 
with short depressed hairs; mandibles long, narrow, arcuate, 
acuminate at the apex, forcipate when closed, tridentate, the 
interior tooth the smallest, the intermediate large, truncate, 
the apical tooth the largest. Tuorax oval, pubescent; collar 
infundibuliform ; mesothorax shorter than the metathorax ; the 
scutellum minute, transverse ; metathorax obtuse; the superior 
nings having one marginal cell ovate, and three submarginal 
cells,—the first as long or longer than the two folloning,—the 
second recewing both the recurrent nervures,—the third very small 
and considerably narrowed towards the marginal ; legs long, 
spinose, and the anterior tarsi strongly ciliated, the claws which 
terminate the tarsi bifid, and having a pulvillus between them 
inthe ¢, but scarcely perceptible in the 9. The aspoMEN 
very distinctly petiolated (the petiole in one species biarticu- 
late), either clavate or ellipsoidal. 
Type, A. sabulosa. 
+4; This genus, the etymology of which is from appos 
—sand, and ¢:Atw—ZJ love, was established by the Rev. Mr. 
Kirby, in 1798, for some insects which he separated from 
Sphex and Pepsis of Fabricius, who, however, did not do 
him the justice to adopt it in his subsequent works; nor 
was it adopted by Latreille in his Histoire, but he receives 
it in his “‘ Genera,” published in 1809. Even Spinola 
considered one of the species as a Pepsis, notwithstanding 
the vast discrepancy of habit. Jurine retains it as Sphea, 
forming of the insects which compose it his first family of 
that genus; but if he did not know Mr. Kirby’s genus, I 
feel surprised he did not form one for it, as it is distinctly 
separate according to his own characters. 
St. Fargeau observes upon the habits of these insects, 
