316 HYMENOPTERA. 



mandibles and antennae ferruginous, the tip of the latter 

 fuscous. The mesothorax and scutellum very closely and deli- 

 cately punctured ; the metathorax obliquely and coarsely striated, 

 having a central longitudinal channel and an abbreviated carina 

 at the base ; the truncation coarsely rugose, with a deep central 

 longitudinal furrow ; the wings hyaline and iridescent, the ner- 

 vures testaceous, the stigma fuscous, the tegulse pale testaceous ; 

 the legs ferruginous, the coxae and femora dusky. Abdomen : 

 the basal margin of the second segment depressed; the apical 

 margin of the first segment narrowly, that of the second more 

 broadly, and the four apical segments rufo-testaceous. 



Hob. Australia (Maclntyre River). 



13. PISON WESTWOODII. B.M. 

 Pison Westwoodii, Shuck. Trans. Ent. Soc. ii. 77. 6 ? . 



Hab. Van Diemen's Land. 



14. PISON TASMANICUS. 



Male. Length 4^-5 lines. Black : the head and thorax sub- 

 opake; the face covered with silvery pubescence; the head, 

 thorax and legs with a long thinly scattered griseous pubescence ; 

 the metathorax obliquely striated, the carina which usually runs 

 down the central channel obsolete; wings fusco-hyaline, the 

 apical margins of the wings with a fuscous border ; the first re- 

 current nervure entering the first submarginal cell at its extreme 

 apex, the second received by the third submarginal cell at its 

 extreme base ; the intermediate and posterior tibiae with a few 

 short scattered spines ; the apical margins of the segments of the 

 abdomen with fasciae of silvery pubescence. 



Hab. Van Diemen's Land. 



Very probably the male of P. Spinola. 



15. PISON OBLIQUUS. 



Female. Length 4 lines. Black : the head and thorax opake, 

 the face covered with silvery pubescence; the metathorax 

 obliquely striated, the central channel nearly obsolete, shallow, 

 and with the striae crossing the depression ; the truncation trans- 

 versely striated ; the wings subhyaline, their apical margins with 

 a fuscous cloud ; the apical margins of the segments with in- 

 distinct bands of silvery pile ; probably, in fine examples, the 

 bands are distinct. 



Hab. Van Diemen's Land. (Coll. W. W. Saunders, Esq.) 

 The neuration of the wings is the same as that of P. Spinolce. 



