Specimens of this species denuded of their white bands would approach the _A. unicolor_ of Latreille; but that insect is described as having the anterior wings black; in the present species both pairs are of the same smoky colour, not approaching black. Fam. MUTILLIDAE. Gen. MUTILLA. 1. Mutilla sexmaculata, _Swed. Nov. Act. Holm._ viii. 286. 44. [Symbol: female]. Mutilla fuscipennis, _Fabr. Syst. Piez._ 436. 35. [Symbol: male]. _Hab._ India (Punjaub, &c.), China, Java, Celebes. 2. Mutilla unifasciata, _Smith_, _Cat. Hym._ pt. iii. p. 38. _Hab._ India, Celebes. 3. Mutilla rufogastra, _St. Farg. Hym._ iii. 629. 51. [Symbol: male]. _Hab._ India, Celebes. 4. MUTILLA VOLATILIS. _M._ nigra, rude punctata et pubescens; capite abdomineque nitidis, alis fusco-hyalinis. _Male._ Length 5-6 lines. Black. Head and thorax very coarsely punctured; head and disk of the thorax punctured; the metathorax opake, with a central abbreviated channel and covered with large shallow punctures; the eyes notched on their inner margin; wings fuscous and iridescent; the tegulae smooth and shining. Abdomen shining and rather finely punctured; the basal segment narrow and campanulate; the margins of the segments thickly fringed with silvery-white hair; the cheeks, sides of the thorax, and beneath the legs and abdomen with scattered long silvery-white hairs. _Hab._ Celebes. Fam. SCOLIADAE, _Leach._ Gen. SCOLIA, _Fabr._ 1. Scolia erratica, _Smith_, _Cat. Hym. Ins._ pt. iii. p. 88. 10. Scolia verticalis, _Burm. Abh. Nat.-Ges. Halle_, i. 37. 61. _Hab._ India, Sumatra, Celebes. 2. Scolia aurulenta, _Smith, Cat. Hym. Ins._ pt. iii. p. 102. 80. (nec _Fabr._). _Hab._ Philippine Islands, Celebes. 3. Scolia fimbriata, _Burm. Abh. Nat.-Ges. Halle_, i. p. 32. 24. _Hab._ Java, Celebes. 4. Scolia dimidiata, _Guer. Voy. Coq. Zool._ ii. pt. 2. p. 248. _Hab._ Senegal, Celebes. 5. SCOLIA TERMINATA. _S._ nigra, clypeo mandibulisque flavis, thorace flavo variegato, alis hyalinis, abdomine flavo quinque-fasciato, apicisque marginibus flavis. _Male._ Length 5 lines. Black; the clypeus, labrum, and mandibles yellow; the former with a triangular black spot in the middle; the latter ferruginous at their apex. The posterior margin of the prothorax, the tegulae, a transverse curved line on the scutellum, and a spot on the postscutellum yellow; the anterior and intermediate tarsi, tibiae, and knees, and the posterior tibiae outside, yellow; a black line on the intermediate tibiae beneath, and the apical joints of the tarsi fuscous; wings hyaline, the nervures ferruginous. Abdomen brightly prismatic; the margins of all the segments with a narrow yellow fascia, those on the second and third segments terminating at the sides in a large rounded macula; the fascia very narrow or obliterated on the sixth segment; the fasciae on the second and third segments continued beneath. _Hab._ Celebes.