Ml-. K. Vj. Turner on Fossoruil Jlijmenoptera. 543 



? . Fusco-UMTUginous, more or less stained with black, 

 especially on tlie apical ahdominal segments. 



Head closely and not very finely punctured, broader ante- 

 riorly than long, much narrowed posteriorly, tlio aiitenna? 

 inserted tar apart, the trout j)roduced between tliem and 

 subtul)erculate on each side. Pronotuni convex, distinctly 

 margined laterally, nearly half as lon<T again as the greatest 

 breadth ; scutellum longer than broad ; dorsal surface of the 

 median segment about half as long as the ])ronotum, very 

 sparsely ]»unctured. Second dorsal segment coarsely trans- 

 versely rugulose, ^\ith a transverse carina near the base and 

 another at the apex ; the dorsal segments punctured, more 

 closely on the apical segments. Sixth dorsal segment with a 

 carina from the base almost reaching the apex, not com- 

 pressed, rounded at the apex, the edges of the ventral segment 

 jiroduced upwards and forming marginal carinjc along the 

 apical half of the dorsal segment. 



Length 9 mm. 



Hah. Eaglehawk Neck ; February. Ferntree, Mt. Wel- 

 lington ; January. 



Both sexes are very near P. moniUcornis, but the male 

 differs in the presence of yellow markings, in the colour of 

 the legs, in the ahsence of a carina at the base of the clypeus, 

 and in the greater development of the spines on the hypo- 

 pygium. The female differs in the longer pronotum, which 

 is also subcarinate longitudinally on the posterior half in 

 monilicortiis, also in the margins of the sixth ventral 

 segment. These differences I think are specific, though the 

 species are very closely related. 



P sammothynnus depressus, Westw. 

 Thxivnus {Agriomyia) dt>2)ressus, AVestw. Arc. Er.t. ii. p. 107 (1844). 



There is a specimen of tliis species in the British >Museum 

 taken by Commander Walker at Hobart. The type was 

 taken at Albany, W.A. 



Genus Astiienotiiynnus, Turn. 

 Kei/ to the Tasman'ian Species. 



Legs nnd nhtlomen black marked -with pale yel- 

 low : liypopygitini sliglitly broadened from 

 the bat-e nnd truncate nt the apex, with a 

 median spine J. irtsfuxodi, Uuer. 



