48 HYMENOPTERA. 



rowed posteriorly, thinly sprinkled over, as well as the head, 

 with long black hairs ; the legs have a scattered pale glittering 

 pubescence, the intermediate and posterior tibiae armed exteriorly 

 with a row of ferruginous spines. Abdomen longitudinally ru- 

 gose, the second segment having two large ovate punctured 

 yellow spots, the margins of the segments fringed with a loose 

 pale golden pubescence ; beneath, the margins of the segments 

 ciliated with pale glittering hairs. 



Hah. Brazil (Tapajos). (H. W. Bates.) 



231. MUTILLA DENTICULATA. B.M. 



Female. Length 3 lines. — Pale rufo-testaceous, irregularly 

 mottled with darker stains, very closely covered with large punc- 

 tures ; the head wider than the thorax, the eyes very large and 

 prominent. Thorax subquadrate, the anterior angles acute, the 

 lateral margins denticulated, as well as those of the metathorax. 

 Abdomen : the second segment having on each side a large den- 

 ticulated tubercle; parallel with these at the extreme lateral 

 margins is a black stain, in the middle of which is an elevated 

 carina. 



Hah. Brazil (Rio Tapajos ; Para). (H. W. Bates.) 



This species is closely allied to the M. tuherculata of Fabricius, 

 but differs in having the abdomen pale, and the tubercles den- 

 ticulated. 



232. MUTILLA FISSICEPS. B.M. 



Female. Length 3-3| lines. — Head black, wider than the 

 thorax, the face above the insertion of the antenna? produced, 

 forming a large transverse elevation, which is deeply notched in 

 the middle ; the basal portion of the scape and the mandibles in 

 the middle ferruginous. Thorax short, subquadrate, ferruginous, 

 the lateral margins crenulated, the metathorax rounded at the 

 sides, usually more or less fuscous ; legs dark rufo-testaceous, 

 the apical joints of the tarsi ferruginous, the intermediate and 

 posterior tibiae furnished exteriorly with a row of spines. Ab- 

 domen black, the extreme base ferruginous ; the second segment 

 has two large oblong ferruginous maculae, the fom* apical seg- 

 ments fringed with silvery pubescence. 



Hah. Brazil (Rio Tapajos). 



233. MUTILLA POLITA. B.M. 



Male. Length 3 lines. — Black, the eyes ovate; head, pro- 

 thorax and metathorax clothed with silvery pubescence ; the legs 



