of New Species of Exotic Hymenoptera. 23 1 



Genus Trigonalys, Westwood. 

 Syn. Sphex p., De Geer ; Ccelius, Serville, olim; Seminota, Spi- 

 nola; Abaslus, St. Fargeau, olim; Trigonalys et Lycogaster, 

 Shuckard. 



Sp. 3. Trigonalys depressa. 

 Sphex depressa, De Geer. (Vid. Monogr. Trans. Ent. Soc. iii. 



p. 273.) * 

 Trigonalys obscura, West. op. cit. 

 Trigonalys bipustidata, Smith, in Annals of Nat. Hist., 2nd 



series, vol. vii. p. 28. 

 Trigonalys compressa, Smith, in Trans. Ent. Soc. New Series* 



vol. i. p. 178, pi. xvi. fig. 2. 

 The parasitic connexion of this species with Polistes lanio has 

 been determined by Mr. F. Smith, in the present volume of the 

 Transactions of our Society. In addition to the specimens in the 

 Collections of the British and Berlin Museums, and that of W. 

 W. Saunders, Esq., I possess a specimen presented to me by J. A. 

 Turner, Esq., of Manchester, the antennae of which are composed 

 of twenty-three joints. Mr. Smith states that Mr. Saunders's 

 individual possesses only twenty. The examination of these 

 different specimens has convinced me that that contained in the 

 Berlin Museum is only a variety of De Geer's species. 



Sp. 7. Trigonalys maculata, Smith. (Plate VII. fig. 4.) 

 Nigra, capite et thorace flavo-maculatis, abdomine flavo fasciato ; 

 antennis fuscis, medio ferrugineis ; pedibus castaneis ; alis 

 fusco parum tinctis, costa lata anticarum obscuriori. 

 Long. corp. lin. 5. Exp. alar, antic, lin. 8. 

 Habitat Moreton Bay, Australasia. In Mus. Britann. and 

 Westw. Communicavit D. Parry. 



Trigonalys maculata, Smith, in Annals of Nat. Hist. 2nd series, 

 vol. vii. p. 28. 

 Caput, thorax et abdomen punctis minutis numerosissimis 

 undique notatum. Caput rotundatum, subdepressum, nigrum, 

 macula elongata ad marginem internum, alteraque ad mar- 

 ginem posticum oculorum ; maculis duabus parvis clypei et 

 duabus ad basin antennarum striolaque in medio interrupta 



* " Sphei (depressa}, nigra, capite lato depresso ; alis exterius fuscis, abdo- 

 mine gibbo ; petiolo depresso, maculis binis flavis." — De Geer. 



