Ml. It. I]. Tiinicr on Fosson'al llijincaojitt'ra, 7.") 



()l)liiin{;ly striated, dorsal surface of tlio median se^iiuMit 

 coarselv obliquely striated at the sides, not distinctly mar- 

 gined; mcsopleurie horizontally striated on the u|ij)er, 

 ol)li(|uely on the lower portion. First abdominal segment 

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

 second se<;inent, ventral segments without cilise. Tore tarsi 

 not eiliate, intermediate til)i:e with two apical spines, on(^ 

 distinctly lunger than the other, hind tibi.'e feebly serrate at 

 the apex. Neuration as in spriji, 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. 



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



This is nearest to spri/i, 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 seutellum, aiul in the colour of the legs and aljdomen. 

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

 present species. 



Arpactus pretiosus, sp. n. 



(S . Niger; clypeo, scapo subtiis, segmcnto dorsali secuiulo fascia 

 apicali iu medio anguste intcrrupta, f'emorilnis anticis sulitus 

 til)ii3(iue anticis supra llavis ; tarsis intermcdiis et posticis flavo- 

 maculatis; scapo subtus, segmento abdoraiuali primo, tcgulis, 

 tibiis iutermediis et poaticis basi tarsisque ferrugiiieis; alis 

 hyalinis, veiiis fuscis. 



Long. 7"5 mm. 



J . Eyes convergent towards the clypcus, separated at 

 the base of the autcnme 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 tliorax punctured ; a frontal sulcus 

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

 seutellum fovcolate ; mesoplcuric horizontally striated on tlu> 

 upper |)art, obliquely rugosc-striate on the lower, the carina' 

 as in ci/iafus. Seutellum finely longitudinally rugosc-striate ; 

 postscutellum arid ijasal area of the median segment mon- 

 coarsely longitudinally striated ; dorsal surface of the median 

 segmentcoarselyreticnlatcatthesidesatul distinctly margined. 

 Abdomen very finely and closely punctured, the first segment 

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

 the eiliic at the apex of the fourth and lifth ventral segments 



