HYMENOPTERA. 



315 



Abdomen closely punctured, the apical margins of the segments 

 with uninterrupted silvery fascise. 



Hab. Australia. 



This species resembles the P. Westwoodii, but differs in having 

 a carina in the channel of the metathorax, and in the sculpture ; 

 the neuration of the wings appears to be the same. 



10. PiSON VESTITUS. B.M. 



Female. Length 5^ lines. — Black : the face covered with sil- 

 very pubescence, intermixed on the elypeus with longer fuscous 

 hairs ; the posterior margin of the prothorax covered with golden 

 pubescence; the meso- and metathorax without pubescence, 

 the latter in fresh examples would probably have a covering of 

 pale pubescence; the mesothorax closely punctured, the scu- 

 tellum less closely so ; the metathorax shining and finely punc- 

 tured, with a slightly impressed channel, in which is a carina 

 that extends to the verge of the truncation ; the latter trans- 

 versely sulcate, and having a deep depression above ; wings fus- 

 cous, the two recurrent nervures uniting with the nervures of 

 the petiolated second submarginal cell; legs simple, without 

 spines or cilia. Abdomen shining, the apical margins of the 

 segments with fasciae of golden pubescence. 



Hah. Australia. 



11. PiSON SpiNOLiE. B.M. 



Pison Spinoloe, Shuck. Trans. Efit. Soc. ii. 76. 4 ? . 



Pison Australis, Sauss. Mem. Soc. Phys, Geneve, xiv. 11 . t. f. 2 $ ? 



Hah. Sydney; Van Diemen's Land. (Type in Coll. F. Smith.) 



P. Australis is said to differ from P. Sjnnolce in being smaller, 

 in wanting the carinse on the mandibles, and in having horizontal 

 striae on the metathorax, instead of oblique ones as in P. Spi- 

 nolce. On examining the typical specimen of P. Spinolce and 

 referring to the description, it is found that the carina is not on 

 the external face of the mandible, but on the upper surface, so 

 that when the mandibles are closed, it is not visible. The size 

 of the species varies greatly ; the metathorax of the typical spe- 

 cimen is only obliquely striated at the base ; on the truncation, 

 or posterior part, it is transverse. 



12. Pison (Pisonitus) ruficornis. B.M. 



Female. Length 3 lines. — Black : the face densely covered 

 with silvery pubescence which has a faint golden tinge; the 



