31 r. K. I']. Turner on Fossoriul Jftjmcnoplera. 85 



Nijsson (Acanthostetlms) tasmanicus, sp. n. 



$. Nigra, opaca, dense punctata; mandibulis pedibusque rufo- 

 testaceis ; segmontis dorsalibus 1-5 macula transverBa lateral! 

 utrinque tlavidula ; alls hyaliuis, venis nigris. 

 Long. (3 mm. 



? . Clypcus broadly and shallowly cniar>^inatc at the a|)ex. 

 Antcnnie inserted as near to the eyes as to each other, 

 j;radnal!y thickened to the apex, the apical joint nearly twice 

 as Ion.; as the pennltimatc. ]*]yes separated at the base oH 

 the cly[)cns by a distance cqnal to about twice the length of 

 the scajie, strongly divergent towards the vertex, the i)oste- 

 rior ocelli half as far again from the eyes as from each other. 

 Head closely and rather finely punctured, clothed with siiorc 

 silver pubescence ; a strong longitudinal carina on tiie front 

 between the antenna?, not reaching halfway to the anterior 

 ocellus. Thorax rather more coarsely punctured than the 

 liead ; median segment irregularly rugose-striate, the poste- 

 rior angles produced into stout spines and clothed with 

 silver pubescence. Abdomen closely punctured, but less 

 coarsely than the thorax, second ventral segment more 

 coarstly punctured, apical dorsal segment broadly triangular 

 and pniictui-ed- rugose. Second cubital cell pointed, some- 

 times distinctly petiolate, second recurrent ncrvure inter- 

 stitial with the first transverse cubital nervure. Hind tibiye 

 almost smooth, with a few very short spines. 



Hub. Mount Wellington, 2300 ft. ; Eaglehawk Neck, 

 S.E. Tasmania. February. 



Near A. pu/ictatissiinus, Turn., but differs in the form of 

 the clypeus, the finer puneturation, and the smoother hind 

 tibiae. 



The male is very similar to the female, it has the seventh 

 dorsal segment broadly truncate at the apex, with a spine at 

 each of the apical angles. There is no fringe of long hairs 

 on the ventral segments. 



Subfamily Crabroninje. 

 Kvy to the Australian Species of llhopaliim. 



22. 



1 . First abdominal segment shorter than the 



second 2. 



Fir.it abdominal segment as long as or 

 longer than the second 3. 



2. Head very birge; eyes nearly as lar from 



the posterior marj^in of the head as 



from eacli other Ik. macroccphdfit^, Turn. 



