of the Genus Leucospis. 17 



typical structure ; in Hindostan the species, as represented by L. 

 atra, hardly differ from the Mediterranean type, except in colour, 

 and the same may be said of L. ornata in South Africa. In West 

 Africa the only one known species is very peculiar, and in Aru 

 Island the species differ less from those of Europe than in New 

 Caledonia ; but the greatest variation occurs in Mexico, in the West 

 Indies, and in South America, and the principal group in the latter 

 continent may be divided into at least four subgroups. One of these 

 has been named Metallopsis, but is hardly sufficiently different from 

 Leucospis. Polistomorpha forms a very distinct genus. 



Leucospis Algirica. Fosm. Nigra, sat angusta, scapo subtus, protho- 

 racis margine interrupto scutellique fascia flavis ; abdomen fasciis 

 quatuor flavis, l a lata, 2 a angusta, 3 a arcuata, 4 a apicali ; pedes flavi, 

 femoribus anterioribus nigris apice flavis, femoribus posticis nigris 

 flavo late marginatis. 



Female. Black, rather narrow. Antennae with the scape yellow 

 beneath. Prothorax with a yellow margin, which is interrupted on 

 each side of the fore border. Scutellum with a broad yellow band. 

 Epimera of the metathorax yellow. Abdomen sessile, subfusiform, with 

 four yellow bands ; first band broad ; second narrow, much interrupted ; 

 third ai'ched ; fourth apical, vertical. Oviduct reflexed to the base of 

 the abdomen. Legs yellow ; anterior femora black, with yellow tips ; 

 hind femora black, broadly bordered above with yellow. Wings cine- 

 reous, brownish along the costa and at the tips. Length of the body 

 4| lines ; of the wings 7 lines. 



Algeria. In Mr. Saunders's collection. 



Leucospis Canadensis. Mas. Nigra, pallido pubescens ; antennae scapo 

 subtus flavo ; prothorax gutta transversa antica, lateribus margineque 

 postico flavis ; mesothorax parapteris et epimeris flavo notatis, scutello 

 fasciato ; abdomen basi rufum, fascia antica lunata fasciis duabus pos- 

 terioribus strigaque apicali flavis ; pedes femoribus apice tibiisque flavis, 

 femoribus posticis basi flavo guttatis, tibiis anterioribus fusco vittatis, 

 tarsis pallide rufescentibus, alis luriclis. 



Male. Black, thickly punctured, with pale pubescence. Scape of 

 the antennae yellow beneath. Prothorax bordered with yellow behind 

 and on each side, and with a transverse yellow dot in front. Meso- 

 thorax with a yellow stripe on each of the paraptera ; scutellum with 

 a yellow band. Pectus with a clavate oblique yellow streak on each of 

 the epimera. Abdomen red at the base ; first segment linear, with a 

 lunate yellow band, narrower than the rest of the abdomen, which is 

 fusiform, and has two yellow bands and a short apical longitudinal 

 yellow streak. Femora yellow at the tips ; hind femora with a yellow 

 dot at the base and with several very minute teeth beneath ; tibiae 

 yellow ; anterior tibiae striped with brown on the outer side ; tarsi pale 



vol. i. c 



