34 HYMENOPTERA. 
their base, the third submarginal and third discoidal cells have 
each a small hyaline spot; the metathorax black, and rounded 
posteriorly. Abdomen black; the basal segment, the apical 
margin of the second, and the third and fourth segments clothed 
with a rich golden pubescence. 
Hab. Madras. 
179. MuTILLA OPTIMA. 
Female. Length 3 lmes.—Head, thorax and legs ferruginous ; 
the pubescence on the face silvery, that on the vertex gold- 
coloured; tips of the mandibles piceous. Thorax subovate, 
narrowed behind, thinly sprinkled with golden hairs, and having 
at the sides a few long black and also a few white ones; the 
legs have a glittering silvery pubescence; the spies which 
arm the intermediate and posterior tibiz externally, and also 
those at the apex of the joimts of the tarsi, black; the calcaria 
pale testaceous. Abdomen black ; the basal joint red and having 
a spot above, a second ovate spot at the base of the second 
segment, and a third at its apex in the middle, and a larger 
one on each side, of bright glittering silvery pubescence; the 
third segment has a central spot of the same colour and brilliancy ; 
beneath, rufo-piceous at the base, and having the apical margins 
of the second and third segments frmged with silvery-white pu- 
bescence. 
Hab. India. (Coll. W. W. Saunders, Esq.) 
180. MuTILLA OPULENTA. B.M. 
Male. Length 6% limes.—Black, the eyes emargmate, the 
mandibles, scape and labrum ferruginous; the head and thorax 
clothed with bright pale golden pubescence, a stripe of the same 
beneath the wings; the tegulz, legs, and nervures of the wings 
ferruginous, the latter fusco-hyaline, their base hyaline. Abdo- 
men: beneath and also the extreme base rufo-piceous ; the apical 
margins of the segments, except the sixth and seventh, have a 
broad fascia of bright golden pubescence ; the pubescence on the 
two apical segments black. 
Hab. India. 
181. MuTILLA PULCHRINA. B.M. 
Female. Length 53-6 lines.—Head and thorax red, deeply 
longitudinally rugose; the antennze and legs nigro-piceous, the 
pubescence on the latter golden-yellow; the thorax armed 
on each side, before the middle, with a stout tooth, behind 
