Aculeate Hymenoptera. 239 



legs very pubescent, the intermediate and posterior tibiae 

 coarsely rugose outside and spinose, tlie tarsi very 

 spinose ; wings dark fuscous, with reflections of pui-ple 

 anel violet. Abdomen : shining, sparingly and finely 

 punctured ; the margins beneath, and at the sides, fring- 

 ed with black pubescence. 



Hab. Moreton Bay. 



In the British Museum. 



2. Dimorphoptera nigripennis. 



Male. Length 7^ lines. Black : with dark brown wings. 

 Head ovate ; slightly shining, and closely punctured ; 

 the face and cheeks thinly covered with erect griseous 

 pubescence ; the antennee rather stout, extending to the 

 apex of the scutellum ; the mandibles bidentate. Thorax 

 as long- as the abdomen, and thinly sprinkled with short 

 griseous pubescence ; closely punctured ; the tibiae and 

 tarsi with short griseous pile ; wings very dark brown, 

 palest at their apical margins. Abdomen oblong-ovate, 

 smooth and shining, having violet reflections in certain 

 lights. 



Hab. Australia. 



This is the only example of a supposed male of this 

 genus that I have seen ; it is in the National Museum ; 

 it differs from the male of Myzine, in the short semi- ovate 

 form of the abdomen, and in being destitute of the spine 

 at the apex. 



3. Dimorphoptera morosa. 



Female. Length 10 lines. Black and shining, with 

 dark fuscous wings. Head narrower than the thorax, 

 shining on the vertex, the face coarsely punctured ; 

 mandibles very obscurely ferruginous towards the tips ; 

 the clypeus, cheeks, and posterior margin of the vertex 

 with cinereous pubescence. Thorax : the pro thorax and 

 scutellum coarsely punctured, the former thinly clothed 

 with cinereous pubescence ; the mesothorax shining, 

 and with a few scattered punctures ; the tibife and tarsi 

 strongly spinose, the calcaria at the apex of the tibise 

 white; wings dark fuscous. Abdomen shining, and with 

 fine scattered punctures ; the apical segment covered 

 with short rigid spines. 



Hab. Australia (Melbourne ?). 



In the British Museum. 



