INSECTA. 369 
Sp. Larra ichneumoniformis Fasr., PANZER, Deutschl. Ins. Heft 76, Tab. 
18, &e. 
Bembex Fasr. Prothorax and feet as in the preceding genus. 
Labrum exsert, often triangular, inflected. Mandibles narrow, 
dentated on the internal side. Maxille and labium often extremely 
elongate, inflected. Body elongate, abdomen ovato-conical. 
Sub-genus Bembex Larr., (and Monedula ejusd.) Labrum trian- 
gular. Maxille and labium very long, linear, inflected, forming the 
promuscis. 
Sp. Bembex rostrata, Apis rostrata L., Panzer, Deutschl. Ins. Heft 1. Tab. 
10; Dumeér. Cons. gén. s. 1. Ins. Pl. 30, fig. 10; Later. Ann. du Mus. xiv. 
Pl. 26, figs. g—13; black, felty, with yellow feet, and light greenish 
yellow transverse bands on the abdomen ; 9—10 lines long. The female 
digs holes in the sand, and lays in each of them an egg with a sufficient 
quantity of Diptera (especially Hristalis tenax) for feeding the larva. Most 
of the remaining species are at home in warm regions; but, the species 
quoted occurs occasionally all over Kurope, even in Sweden. 
Sub-genus Stizus Larr., JurtNE. Labrum small, semicircular. 
Maxillee and labium porrect, not inflected, nor elongato-linear. (In- 
termediate lacinia of labium elongato-cordate. Maxillary palps 
somewhat long, extended beyond the apex of maxilla.) 
Sp. Bembex ruficornis Fasr., Lnt. syst., Larra ruficornis ejusd. Syst. Piez., 
Cuv. R. Ani. éd. ill., Ins. Pl. 121, fig. 3; habit. in south of Europe and 
Numidia, &c. 
Sphex Lin. (exclusive of many species). Prothorax continued 
laterally as far as the anterior wings, narrowed forwards, resembling 
a joint or node. Labrum scarcely or not at all exsert. Three com- 
plete cubital cells. Antenne slender, with joimts elongate, often, 
at least in females, convolute or arcuate. Posterior feet very long, 
with tibiz and tarsi spinose. Abdomen adhering to thorax by a 
long petiole. 
* With mandibles edentulous. 
Sub-genera: Pelopoeus Larr., Fasr., Podiwm Fasr., (U'rigonop- 
sis Prrty), Podiwn Larr. (not Fasr.), Ampulex Jur, Later. 
(Chlorion Fapr. in part). 
** With mandibles on inside dentate. 
Sub-genera: Dolichurus Latr., Trirogma Wrstw., Aphlelotoma 
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