102 ILLUSTRATIONS OF SOME SPECIES OF 
& Mandibules bidentées, chapéron trés-avancé entre les mandibules. 
* Labre découvert et saillant. 
t Labre bilobé 5 : G. Agriomyia, Guér. 
++ Labre arrondi. 
o Machoires non ciliées 4 leur base. G. Thynnus, F. 
00 Machoires trés-ciliées 4 leur base. G. Thynnoides, Guér. 
** Labre recouvert par le chapéron. 
+ Premier cellule cubitale sans appendice. G. Anthobosca, Guér. 
Tf Premier cellule cubitale ayant un appendice. G. Elaphroptera, Guér.* 
Rhagigaster, Guér., composed of a single species from Port Jackson. Rh. unicolor. 
Telephoromyia, Guér., composed of a Patagonian species. 
Tachypterus, Guér., consists of a single species, T. fasciatus, from Kangaroo Island, on the 
coast of New Holland. The genus is evidently identical with Psamatha (See ante, p. 20), 
which name must accordingly sink into a synonyme. Tachypterus chalybeeus (ante, pl. 
54, fig. 5), forms a second species in the genus. 
Agriomyia, Guér., consists of a single species, A. maculata, from New Holland. 
Thynnus, Fabricius. M. Guérin describes or notices 18 species of this Australian group. 
1. T.dentatus,Fab. 2. T.zonatus,Guér.,n.sp. 3. T. variabilis, Kirby. 4. T. affinis, 
Guér. n. sp. 5. T. obscuripennis, Guér. n. sp. 6. T. rufiventris, Guér. n. sp. 7. T. 
annulatus. K. 8. T. Australis, Bdv. Voy. Astrol. 9. T. flaviventris, Guér. n. sp. 
10. T. emarginatus, Fab. 11. T. abdominalis, Fab. tf 12. T. integer, Fab. + 
13. Scolia 7-cincta, Fab. ?? 14. Tiphiaradula, Fab.?? 15. Myrmecodes flavo-gutta- 
tus. Latr. (Q of T. variabilis?) 16. T. apterus. 9 Enc. Méth. 17. T. pedestris, 
Fab.? 18. T. Grayii, Guér., (Myrmecodes australis, Leach, Gray, Griff, An. K.) 
Thynnoides, Guér.—Three new species, T. fulvipes, Guér.; T. rubripes, Guér. ; and 
T. pugionatus, all from Australasia. 
Diamma, Westw., (see ante, pl. 54, fig. 6.) In addition to D. bicolor, the true type of 
the genus, M. Guérin describes a second species, D. ephippiger, from Kangaroo Island, 
but it is not congenerous with the former, being in fact a female of the genus Rhagi- 
gaster. He also suggests that B. apterus, Fab., also belongs to the genus. 
Anthobosca, Guér.—A single species from Port Jackson. (Myzene Australasia, 
Guér. Atlas, pl. 8, fig. 10.) 
Anodontyra, Westw.—A single species from Chili. 
Ornepetes Gueér.—Also a single species from Chili. 
Elaphroptera, Guér.—Composed of South American species. 
Ammodromus, Guér.—Composed of the female of South American species. 
In the “‘ Magasin de Zoologie” for 1842, M. Guérin has made 
numerous additions to our knowledge, both of the species and 
structural characters of these insects, adding the following new 
species :— 
Rhagigaster hemorrhoidalis (Swan River.) 
Agriomyia marginilabris, affinis, Westwoodii, abdominalis, and Spinolz, all from Australasia. 
* “ Nous n’avons pas fait entrer dans ce tableau les deux genres provisoires, Diamma et 
Ammodromus ; ils se composent de femelles qui entreront probablement dans les genres déji 
connus, quand on les aura mieux observées, et qu’on aura surpris leur accouplement.” 
+ This species belongs to the family of the bees, and is allied to Crocisa. 
} The cylindric abdomen with a recurved apical spine, unites this species with the genus 
Rhagigaster of Guér. 
