HYMENOPTERA. 27 



the thorax black ; the entire insect has a thinly scattered gri- 

 seous pubescence, most dense on the legs and on the margins of 

 the abdominal segments beneath, the tarsi rufo-testaceous ; the 

 third and two following segments have a patch of silvery pubes- 

 cence in the centre above, and the apical segment is obscurely 

 red and finely longitudinally aciculate. 



Hob. Western Australia (Perth). 



150. MUTILLA INSTABILIS. B.M. 



Female. Length 3 .lines. Black, head rugose, the tubercles 

 at the base of the antennae and the mandibles ferruginous, the 

 latter sometimes obscurely so. Thorax : sometimes the disk is 

 ferruginous, but more frequently black ; thickly covered with 

 deep elongate punctures, those on the posterior portion of the 

 disk very large and subconfluent ; the tarsi ferruginous. Abdo- 

 men densely covered with large deep longitudinal punctures ; 

 the second segment above ferruginous, the margins black, the 

 apical segment aciculate above. 



Hab. Australia (King George's Sound ; Swan River). 



151. MUTILLA MOROSA. B.M. 

 Mutilla morosa, Westw. Arc. Ent. ii. 19. 12. t. 54. 1 <? . 



Hab. Australia (Swan River). 



152. MUTILLA STRIGOSA. B.M. 



Female. Length 4i lines. Black, the head rugose and having 

 a thinly scattered glittering pale pubescence, interspersed with a 

 few long black hairs ; the flagellum beneath and the mandibles 

 ferruginous. Thorax ferruginous, its anterior margin black; the 

 disk deeply longitudinally strigose ; the legs black, the knees 

 and base of the tarsi rufo-testaceous. Abdomen shining, longi- 

 tudinally rugose, the apical margins of the segments fringed with 

 glittering pale golden pubescence ; the apical segment obscurely 

 ferruginous and longitudinally aciculate. 

 Hab. Australia (Swan River). 



153. MUTILLA LUTARIA. B.M. 



Female. Length 5 lines. Rufo-testaceous, head and thorax 

 coarsely punctured, the abdomen more finely so ; the entire insect 

 clothed above with golden pubescence ; the scape of the antennae, 

 eyes and mandibles black ; the femora fuscous ; the tarsi and 

 the tibiae externally very spinose, the spines black ; the extreme 



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