HYMENOPTERA. 57 



278. MUTILLA L^TA. 



Female. Length 5 lines. — Black, head quadrate, wider than 

 the thorax, cheeks unarmed, the posterior angles of the vertex 

 acute; the flagellum rufo-testaceous beneath, on the vertex a 

 round patch of silvery pubescence. Thorax short, slightly con- 

 tracted posteriorly ; the mesothorax has on each side a spot of 

 silvery pubescence which is sometimes united to a spot on the 

 sides of the metathorax. Abdomen : the second segment deco- 

 rated with four ovate ferruginous spots, two touching the basal 

 margin, and two larger ones towards the apical margin ; the four 

 apical segments clothed with silvery pubescence, having a denuded 

 line down the centre ; the abdomen, legs, and entire insect beneath 

 sprinkled with long glittering silvery hairs. 



Hab. Columbia. (Coll. W. W. Saunders, Esq.) 



279. MUTILLA SIMULANS. B.M. 



Female. Length 4i lines. — Black, the head having a large patch 

 of silvery pubescence on the vertex. Thorax subovate, narrowed 

 posteriorly; an elongate-ovate patch of silvery pubescence on 

 each side of the mesothorax, placed obliquely before the scutel- 

 lum ; also a line of similar pubescence on each side of the meta- 

 thorax, slightly separated from the ovate spots; the thorax 

 beneath silvery, the legs having a thin scattered long silvery pu- 

 bescence, the intermediate and posterior tibise spined externally. 

 Abdomen : the second segment has on each side, touching the 

 base, an ovate yellow macula, and a second pair placed trans- 

 versely towards the apical margin ; the fourth and fifth segments 

 have a central patch of silvery pubescence ; a similar patch is 

 placed, on each side, at the extreme lateral apical margins of all 

 the segments ; beneath, the margins ciliated with silvery hairs. 



Hab. Venezuela. 



280. MuTiLLA Antiguensis. 7^ B.M. 



Mutilla Antiguensis, Fabr. Ent. Syst. ii. 367. 2; Syst. Piez. 

 p. 429. 3. 



Oliv. Ency. Meth. viii. 56. 6. 



St. Furg. Hym. iii. 604. 13. 

 Mutilla erythrina. Say, Bost. Journ. i. 297. 4. 



Hab. Island of Antigua ; Mexico. 



281. Mutilla arachnoides. B.M, 



Female. Length 5^ lines. — Black, densely pubescent, that 

 on the head ochraceous. Thorax and legs covered with ochra- 

 ceous pubescence, the former having a large rounded patch of 

 black on the disk ; the abdomen is also covered with ochraceous 



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