MUTILLA. 211 



slightly narrowed to the apex ; truncate posteriorly, the margin of 

 the truncation with a row of six or eight spines, sprinkled above 

 with erect fuscous pubescence. The basal segment of the abdomen 

 ferruginous, the second with a broad interrupted fascia in the 

 middle, and the third, fourth, and fifth segments with pale yellowish- 

 white pubescence. 



Hab. Brazil, Constancia. 



64. Mutilla insidiosa. 



Female. Length 3-3| lines. — Head and abdomen black, thorax and 

 le^s ferruginous. The antennae and mandibles obscurely ferrugi- 

 nous, the former fuscous above towards the apex, the latter black 

 at the tips. Thorax the width of the head, rather short and fiddle- 

 shaped, very closely punctured, the margins crenulated; legs 

 fusco-ferruginous. Abdomen with the extreme base ferruginous ; 

 the second segment with two large transverse, yellowish-red, united 

 maculae near the apical margin ; the following segments ciliated 

 with short white pubescence above and beneath. 



Hob. St. Paulo and Ega. 



65. Mutilla pectoralis. 



Female. Length 3 J lines. — Head and abdomen black ; the base of 

 the antennae, thorax, and legs ferruginous. The mandibles ferru- 

 ginous, with their tips black. Thorax narrower than the head, 

 very closely punctured and attenuated behind ; above, slightly 

 curved from the front to the apex. Abdomen with the basal seg- 

 ment ferruginous; the second with two oblong-ovate yellowish- 

 white maculae at the base, its apical margin and the following 

 segments covered with similar coloured pubescence. 



Hah. Rio de Janeiro. 



66. Mutilla crenulata. 



Female. Length 4J lines. — Black; the head anteriorly and the 

 thorax above ferruginous, and having short ferruginous pubescence. 

 The head about the same width as the thorax, rounded at the 

 lateral angles of the vertex ; the mandibles ferruginous in the 

 middle. Thorax oblong- quadrate, emarginate at the sides towards 

 the apex, rugose above, and with the margins crenulated. Abdo- 

 men with a narrow longitudinal line from the base to the apex of 

 silvery-white pubescence, crossed by a similar line on the second 

 segment towards its apical margin ; this segment has also a line of 

 the same at the extreme lateral margins ; beneath, the segments 

 are fringed with white pubescence. 



Hab. Venezuela. 



p2 





