Mr. E,. E. Turner on Fossorial Ilymenoplera. 75 



obliquely striated, dorsal surface of tlio mediau segment 

 coarsely obliquely striated at the sides, not distinctly mar- 

 gined ; mesopleuree horizontally striated, on the upper, 

 obliquely on the lower portion. First abdominal segment 

 sliort and broad, fully half as broad at the apex as the 

 second segment, ventral segments without cilise. Fore tarsi 

 not ciliate, intermediate tibiee with two apical spines, one 

 distinctly longer than the other, hind tibiae feebly serrate at 

 the apex. Neuration as in spryi, but the second abscissa of 

 the radius is very short, not more than one-eighth of the 

 length of the third. 



$ . Second ventral segment not angular at the base ; 

 pygidial area elongate-triangular. Apical joint of fore tarsi 

 very large and stout as in most females of the group. 



Hub. Yallingup, S.W. Australia ; December. 



This is nearest to spryi, but differs in the lesser develop- 

 ment of the characters of the apical joints of the flagellum, 

 in the tubercle between the antennae, in the sculpture of 

 the scutellum, and in the colour of the legs and abdomen. 

 The second cubital cell is also shorter on the radius in the 

 present species. 



Arpactus preiiosus, sp. n. 



cJ . Niger; clypeo, scapo subtus, segmento dorsali secuiulo fnscia 

 apicali iu medio angiiste interrupta, femoribus anticis subtus 

 tibiisque anticis supra flavis ; tarsis intermcdiis el posticis flavo- 

 maculatis ; scapo subtus, segmento abdomiuali primo, tegulis, 

 tibiis intermediis et posticis basi tarsisque ferrugiiieis ; alis 

 hyaliuis, veuis fuscis. 



Long. 7'o mm. 



J . P]yes convergent towards the clypeus, separated at 

 the base of the antennae by a distance nearly half as great 

 again as the length of the scape ; apical joint of the flagellum 

 distinctly but not strongly curved, a little longer than the 

 penultimate. Head and thorax punctured ; a frontal sulcus 

 reaching the anterior ocellus ; the suture at the base of the 

 scutellum foveolate : mesopleuroe horizontally striated on the 

 upper part, obliquely rugose-striate on the lower, the carinso 

 as iu ciliatus. Scutellum finely longitudinally rugose-striate ; 

 postscutellum and basal area of the median segment more 

 coarsely longitudinally striated ; dorsal surface of the median 

 segment coarsely reticulate at the sides and distinctly margined , 

 Abdomen very finely and closely punctured, the first segment 

 short, fully half as broad at the apex as the second segment j 

 the cilise at the apex of the fourth and fifth ventral segments 



