HYMENOPTERA. S95 



small and distant ; the fore-wing's have only two complete cubital cells, the second of which receives the first 

 recurrent nerve. 



Aporns, Spinola, has also two complete cubital cells, but the second receives the two recurrent nerves ; in other 

 respects they entirely resemble Pompilus. 



The others have the first segment of the thorax narrowed in front like a knot, and the first abdominal segment, 

 and sometimes part of the second, narrowed into an elongated peduncle; the upper wings have always three pert I t 

 cubital cells, ami the commencement of a fourth. 



Ammophila, Kirby, has the mandibles dentate, and the 

 maxilla' and labium very long and proboscis-like; the secoml 

 cubital cell receives the two recurrent nervea. Type, Spkat 

 sabiilota, Linn, [a very common British species], the female 

 of which provisions her nest with caterpillars. 



Mitau, Jur. iFam. 1), differs only in having the third cu- 

 bital cell petiolated in front. 

 < Ithers have the mandibles and palpi similarly formed, but 



{jfy^^/' l-1~_^-tGTfr Lr^ffitSiiSiijfifi 5 '^' t '"' max '" ,x ' a,l( ' labrum are much shorter. 



In Proiueus, Latr., the second cubital cell receives, as in 

 r.*. 121.-Amn.opt.il. ..buin... Amniophila, the two recurrent nervures. [A large African 



species]. 

 In Sphe-r proper the same cell receives only the first recurrent nerve; the third is inserted beneath the other. 

 [S.flavipettnis, the only British species, but very rare.] 



In Cklorion, Latr., the first recurrent nerve is inserted beneath the first cubital, and the second beneath the 

 third. C. compression, a splendid green species with red thighs, which is very common in the Isle of France, 

 where it provisions its nest with Blattae. 

 Do/ic/iurus, Latr., has the maxillary palpi much longer than the labial, and nearly thread-like. 

 The last Fossores of this third division have no teeth to the mandibles. 

 Ampulex, Jur., resembles Chlorion in the insertion of the recurrent nerves. 

 In the two following the second cubital cell receives the two nerves. 

 Podium, Latr., has the maxillary palpi scarcely longer than the labial. [Exotic species.] 



Pelopicus, Latr., has them longer, with unequal joints; the antenna; are inserted higher. P. spirifex, a conti- 

 nental species, makes its nests of mud in the angles of rooms, arranging them spirally, covering them with mud, 

 and provisioning them frith Spiders, dipterous insects, &c. 



4. The Bemuecides have the collar linearly transverse, the sides not extending to the base of the 

 wings ; the legs short, or of moderate length ; the abdomen semiconical and elongate ; the labrum 

 naked and exscrted. This family is named after the genus 



Bembex, Fabricius, — 

 The species of which arc peculiar to warm climates. The body is elongated, pointed behind, mostly 

 varied with black and yellow, or reddish and glabrous ; the mandibles narrow, elongated, toothed 

 inside, and crossing each other; the fore-tarsi of the females furnished with spinose cilia; ; the males 

 have generally one or two elevated teeth on the under-side of the abdomen. The species arc rapid in 

 their flight, and make a sharp buzzing noise ; many emit a strong scent of roses. 



Some have the proboscis long, and the labrum forma a long triangle. 



Bembu proper has very short palpi. /(. rottrala, Linn, [a repute. i British species , forma deep burrows in the 

 gaud [for its nest], which it pr<>\ isions w ith two-winged files, as S\ rplnd.T, Muscidae, &c. 



Monedula, Latr., lias the palpi long. [F.xutic 



.Sti;its, Jur., has the proboscis not elongated, and the labrum short and rounded. BzOtic species.] 



5. The Larrates have the appearance of the Bembecidea, bat the labrum is concealed, and the man- 

 dible-, have a deep notch within at the base. 



Some have three complete cubital cells. 



PalariU, Latr (GoflflM, Jur.i, has short antenna' thickened at the tips, and t lie second cubital cell is petn.lut.-d. 

 [A continental species . 



Lyrop*, ill , has filiform antenna . and the mandibles ham a tooth » Ithin. 



Lurni, l-'at... differs from Lyropa in the mandibles not having a tooth within. 



The others have only two complete cnbital i ells. 



Dinetut, Jur., has both cubital o IN sessile, and the mandibles :> dentate within. 



Misrophus, Jur., has the second cnbital cell petiolated, and the Inside of the mandibles nol toothed. 



C. The Nyssonieru bave the labrum more or leu completely hidden, the maxillae and labium not 

 forming a proboscis; the mandibles without a uotch at the base within ; the load of ordinarj lize, and 



the abdomen gradually attenuated and never, peduncle.!. 



