HYMENOPTERA.— SPHEGIDZE. 203 
proboscis. M. Léon Dufour has described some peculiarities ex- 
hibited in the structure of the intermediate legs and antenne of the 
males of this genus (Ann. Soc. Ent. France, 1838, p. 276.), as well as 
the structure and uses of the spines at the extremity of the body 
of the males. I possess a remarkable species of this genus from 
the Cape of Good Hope, given to me by Dr. Klug (S. alternans Av. 
MSS.), in which the base of the abdomen is armed on the under side 
with a strong curved horn. * 
The insects composing the family Spurcip#+ (including the Pom- 
pilide) are distinguished from the preceding by having the collar 
laterally dilated and extending as far as the base of the wings; the 
legs are very long, the posterior pair being often more than twice as 
long as the head and thorax ; the antenne are filiform or subsetaceous 
and long, composed of elongated joints, those of the females being 
often convoluted and scarcely serrated; the body is long, with the 
abdomen often attached to the thorax by a long peduncle; the 
labrum is seldom exserted; the mandibles are elongate, curved, 
narrow, and acute at the tips, and not notched on the outside at the 
base ; the eyes are entire ; the legs are in general eminently fossorial, 
* The same character exists in a specimen of Bembex monodonta Say, sent me 
by Dr. Harris, of Massachusetts. 
+ Brsriocr. REFER TO THE SPHEGIDA. 
Klug, in Neue Schriften der Gesellsch. Nat, freund. zu Berlin, vol. ili. (Sceliphron, 
Ammophila. ) 
Dahilbom, Monographia Pompilorum Suecize Lund. 8vo. 1829. — Ditto, Mono- 
graphia Sphegidum ( et Pompilorum) Sueciz, in Exercit. Entomol. 1831-32. 
Kirby. Ammophila, n. g. Insects in Trans. Linn. Soe. tom. iv. 1798. 
Lepelletier, Comte de Saint Fargeau, in Guér. Mag. Zool. Ins. 29, 30. (Macromeris). 
— Ditto, 33. (Sphex Latreillei). — Ditto, 34. (Sphex Thunbergii. ) 
Heyer, on Pepsis lutaria, in Germar Mag. der Ent. vol. iy. p. 409. 
Haliday, in Trans. Linn. Soe. vol. xvii. (G. Chirodamus. ) 
Schiodte. Pompilidarum Danie Disp. Syst. Havnia, 1837. Syo. 
Shuckard. Essay Fossores. — Ditto, in Trans. Ent. Soe. vol. ii. p. 72. (Exeirus. ) 
Fabricius, Klug (Symb. Phys.), Coquebert, Drury, Savigny (Egypte), Shuckard, 
Rossi, Spinola, Panzer, Perty (Brazil), Brullé (Morea). 
