AUSTRALIAN F0SS0RIAL WASPS. 43 



has not yet been taken at Perth. Mr. Giles took dilatatus on 

 Leptospermum blossom, which the present species does not seem 

 to frequent, most of my specimens having been taken on the 

 wing, or resting on Eucalyptus leaves. 



There is no tubercle at the base of the second ventral segment 

 of the male as there is in dilatatus, and the mesopleurae of the 

 female do not show a small dorsal surface as in that species. 



Zaspilothynnus dilatatus Sm., subsp. spiculifer, nov. 



A pair received by me from Southern Cross, "W. Australia. 



The male differs from Perth specimens in having a short but 

 distinct apical spine on the hypopygium, and black legs. 



5 . Nigra, mandibulis fusco-ferrugineis ; segmento dorsali 

 primo punctato, secundo transverse circa 12-carinato; tibiis 

 intermediis incrassatis. 



Long. 12 mm, 



5 . Head subrectangular, more than half as broad again as 

 long; shining, sparsely punctured. Pronotum broader than the 

 head, sparsely and finely punctured, the anterior margin very 

 shallowly emarginate, with a row of large punctures, from each 

 of which springs a long hair. Mesopleura? showing a very small 

 dorsal surface on each side at the basal angles of the scutellum. 

 First dorsal segment punctured, with a transverse groove before 

 the recurved apical margin ; second dorsal segment with about 

 twelve transverse carinas, all low, except the two nearest the 

 apex, the basal carina? A r ery low and indistinct. Pygidium not 

 constricted at the base, obliq\iely truncate posteriorly, with 

 arched carina? at the base and on the basal portion of the surface 

 of the truncation jyhich is broadly ovate. Fifth ventral segment 

 obliquely striated. 



Hah. Southern Cross, W. Australia. $ 5 * n C0 P- 



This is in both sexes very near Z. dilatatus Sm., but the male 

 differs in the presence of an apical spine on the hypopygium and 

 in the colour of the legs ; the female in the sculpture of the basal 

 dorsal segment and of the fifth ventral segment, in dilatatus the 

 former is finely transversely striated, with punctures between 

 the striae, the latter longitudinally striated instead of obliquely 

 as in the present form, in which also the stria? on the first dorsal 

 segment are obsolete leaving only the punctures. 



This species is remarkable in showing a small dorsal surface of 

 the mesopleura? on each side at the base of the scutellum. This 

 point is one of the chief characters of the subfamily Rhagi- 

 gasterina?, in which, however, it is much more strongly developed. 



Zaspilothynnus rugicollis, sp. n. (PI. I. figs. 3, 4.) 

 $ . Niger ; rugosus ; albopilosus ; abdomine punctato ; pronoto 



angulis anticis acute producto : alis subhyalinis, venis nigris. 

 $ . Rufo-ferruginea ; abdomine nigro ; segmento dorsali primo 



transverse rugoso, apice transverse carinato, segmento dorsali 



