120 Di'. li- C L. Perkius on Aculeate 



punctures and tie interstices distinctly punctulate. Meso- 

 notum shining (more so in the male), with very sparse and 

 feebly impressed punctures of larger size and a finer jjunc- 

 turation, which is also indefinite or very feeble, clothed like 

 the head with short, erect, black hair. Propodeum smooth 

 and shallowly punctured, widely channelled and rugose down 

 the middle, its posterior lateral angles dentate or spinose. 

 Abdomen clothed with excessively short hairs, the apical 

 margin of the petiole raised or reflexed. Wings shining 

 fuscous, brassy in some lights, 



^ ? . Length to apex of second abdominal segment 

 9-14 mm. 



Hub. Cairns, Queensland, 



Abispa, Mitch. 



The antennae in the male of this genus are remarkable 

 for being only 11 -jointed and quite simple. The Australian 

 Alastor likewise has eleven joints in the male, but only 

 eight of these are apparent, the three terminal ones being 

 extremely minute and more or less sunk in a cavity of the 

 eighth joint. Sometimes they are so small as to appear as 

 a mere tubercle, even under a very strong lens. The eight 

 apparent joints are, most of them, unusually lengthened, 

 giving the antennae a characteristic appearance. 



Abispa odyneroides, sp. n. 



General colour the same as that cf Odynerus abifipoides, 

 described below, but the mandibles are darker, reddish, the 

 yellow in the sinus of the eye does not continue down to fill 

 up the space between the clypeus and supraclypcal plate, 

 but is continued upwards nearly to the top of the eyes, the 

 pronotum is entirely black, 



Clypeus very deeply and Avidely dentately emarginate, 

 Antenn?e (c?) 11-jointed, the third subequal to the fourth 

 and fifth together. Head in front with dense reddish hair, 

 Mesonotum dull, veiy rugosely i)uncturcd, clothed \vith very 

 short, erect, dark hairs, those on the scutellum pale; post- 

 scutellum trideutate, the lateral spines short, blunt and 

 obscure, the median one erect and sharpish ; propodeum 

 rugose from the very dense puncturation, the hind angles 

 hardly prominent, in some aspects subrcctangular. Basal 

 abdominal segment shallowly, but distinctly and rather 

 evenly punctured, the whole surface of the abdomen very 

 dull from the sericeous dark tomeutose clothing. Trans- 

 verse sulcature of second ventral segment deep, the costa? 



