7-1 jMr. R. E. Turner o?i Fossorial Ilymenoptera. 



Mesonotum shallowly punctured ; a distinct foveolatc 

 transverse groove at the base of the scutellum. Scutellura 

 and postscutellum closely longitudinally striated ; basal 

 area of median segment strongly obliquely striated, the 

 sides of the segment coarsely rugose. Abdomen narrowed 

 at the base, the first segment about half as broad at tbe 

 apex as the second, seventh dorsal segment small, broadly 

 rounded at the apex ; second ventral segment not angular 

 at the base. Ventral segments without cilije of long hairs. 

 Fore tarsi not ciliated, intermediate tibiae with one long 

 apical spine, the second s])ine very short and slender, hind 

 tibiae feebly serrate. Second abscissa of the radius very 

 short, about one quarter of the length of tbe third, first 

 transverse cubital nervure bent sharply outwards near the 

 cubitus and emitting inwards a short spurious vein, both 

 recurrent nervures received by the second cubital cell far 

 apart. Cubitus of the hind wing originating at a distance 

 beyond the transverse median nervure about half as great 

 again as the length of that nervure. 



Hah. Mordialloc^ Victoria [Spry). 



This belongs to the ciliatus group, differing from most 

 species of that group in the structure of the antenuse and 

 in the absence of long cilite on the ventral segments. 



Arpactus obesus, sp. n. 



cJ . Niger ; scapo subtus, pronoto linea utrinque ; segmentis dorsali- 

 bus primo tertioqiie fasciis apicalibiis interruptis, secundo macula 

 apicali utriuque, femoribus anticis subtus, tibiis anticis, tibiis 

 intermediis et posticis basi, tarsis anticis, tarsisque iiitermediis et 

 posticis articulis 4 basalibus dimidio basali flavis ; alia hyalinis, 

 venis fuscis. 



5 . Mari similis ; segmentis dorsalibus tertio quartoque fascia con- 

 tinua apicali, quiuto macula parva flavis ; flagello subtus fusco- 

 ferrugineo. 



Long., 6 7 mm., § 8 mm, 



(J . Eyes convergent towards the clypeus, separated at 

 the base of the antennae by a distance more than half as 

 great again as the length of the scape ; anneal joint of the 

 flagellum strongly curved, no longer than the penultimate, 

 which is subtuberculate at the base. Posterior ocelli nearly 

 twice as far from each other as from the eyes ; a small 

 tubercle between the antennae ; a shallow frontal sulcus 

 reaching the anterior ocellus. Head and thorax punctured, 

 tbe groove at the base of the scutellum foveolate ; post- 

 scutellum longitudinally, basal area of the median segment 



