HYMENOPTERA. 57 
278. MuTILLA LATA. 
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 44 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 tibize 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. MutitLa ANTIGUENSIS. B.M. 
Mutilla Antiguensis, Fabr. Ent. Syst. ii. 367. 2; Syst. Piez. 
p- 429. 3. 
Oliv. Ency. Méth. viii. 56. 6. 
St. Farg. Hym. ii. 604. 13. 
Mutilla erythrina, Say, Bost. Journ. i. 297. 4. 
Hab. Island of Antigua; Mexico. 
281. MuTILLA ARACHNOIDES. BM, 
Female. Length 54 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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