18 HYMENOPTERA. 



and two impressed lines on each side, touching the posterior, but 

 not extending to the anterior, margin ; the metathorax covered 

 with large shallow punctures and rounded at its lateral margins ; 

 wings dark brown, and having a purple iridescence. Abdomen 

 shining, finely and distantly punctured, its extreme apex slightly 

 ferruginous. 



Hab. Sierra Leone. (The Rev. D. F. Morgan.) 



115. MUTILLA PYTHIA, B.M. 



Female. Length 6i lines. Head and abdomen black, thorax 

 ferruginous ; head coarsely rugose, swollen behind the eyes, the 

 hinder angles rounded ; the margin of the vertex, cheeks, and 

 parts of the mouth have a thin griseous pubescence, the front 

 sprinkled with erect short black hairs. Thorax oblong-quadrate, 

 very coarsely longitudinally rugose ; the lateral margins of the 

 metathorax denticulate; the intermediate and posterior tibiae 

 have externally a double row of short spines, the legs thinly 

 clothed with a pale glittering pubescence. Abdomen thinly 

 clothed with black pubescence ; the three basal segments have 

 on their apical margins a fascia of glittering yellowish -white 

 pubescence ; the second segment beneath is transversely elevated 

 in the middle and armed with three blunt teeth. 



Hab. Port Natal. 



116. MUTILLA CEPHEUS. B.Mi 



Female. Length 6 lines. Head and abdomen black, thorax 

 ferruginous, the head and thorax very coarsely rugose, the head 

 rather wider than the thorax, rounded behind ; thorax oblong- 

 quadrate, slightly narrowed behind ; the legs have a sparing pale 

 glittering pubescence, that on the tarsi beneath brown. Abdo- 

 men longitudinally rugose, the basal segment has on each side 

 an oblique patch of glittering yellowish-white pubescence ; the 

 third segment is covered with pubescence of the same colour in- 

 terrupted in the middle. 



Hab. Port Natal. 



117. MUTTLLA ACHERON. B.M. 



Male. Length 10 lines. Entirely black, the eyes emarginate, 

 the head much narrower than the thorax ; the mesothorax having 

 a central longitudinal carina and two shorter ones on each side ; 

 the metathorax widened posteriorly, and having in the middle a 

 longitudinal grooved carina, on each side of which is an irregular 

 reticulation; wings deep brown-black, having a violet irides- 

 cence ; the first submarginal cell has a curved transverse hyaline 



