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 

 thu'd 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. 



Hab. 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 c? . 

 Hab. Australia (Swan River). 



152. Mutilla strigosa. B.M. 



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

 a thinly scattered glittering pale pubescence, interspersed with a 

 few long black hairs ; the iiagellum 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 



c2 



