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 tibiz 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. 
Hab. 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 
oa Thorax subquadrate, the anterior angles acute, the 
ateral 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. 
Hab. Brazil (Rio Tapajos; Para). (H.W. Bates.) 
This species is closely allied to the M. tuberculata of Fabricius, 
but differs in having the abdomen pale, and the tubercles den- 
ticulated. 
232. MuTILLA FISSICEPS. B.M. 
Female. Length 3-33 lines.—Head black, wider than the 
thorax, the face above the insertion of the antennz 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 tibize furnished exteriorly with a row of spines. Ab- 
domen black, the extreme base ferruginous ; the second segment 
has two large oblong ferruginous macule, the four apical seg- 
ments fringed with silvery pubescence. 
Hab. 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 
