Head dark brown. Antennæ longer than the insect; the sixth joint being furnished with a small tuft of hairs. Thorax brown, very rough and uneven, occasioned by the many bumps or swellings on it; two of which, like thick spines, are situated on the sides. Scutellum small. Elytra brown, and full of small pustules. In the middle are two oblong black streaks, placed next the suture. Legs brown, femora very thick. Tarsi yellow underneath, and pilose; those of the fore-legs being very hairy. {70}PLATE XXXVI. [Illustration] BLATTA NIVEA. Plate XXXVI. fig. 1. ORDER: Orthoptera. SECTION: Cursoria. FAMILY: Blattidæ, _Leach_. GENUS. BLATTA, _Linn. &c._ BLATTA NIVEA. Alba, capite antennisque flavis thoracis dorso margineque interno elytrorum flavescentibus. (Long. Corp. lin. 12.) SYN. Blatta Nivea, _Linn. Syst. Nat._ 1. 2. _De Geer Ins._ 3. _t._ 44. _f._ 10. _Herbst. Arch. t._ 49. _f._ 8. _Fabr. Ent. Syst._ 2. _p._ 8. HABITAT: New York (_Drury_). "In America insulis" (_Fabr._). Head and antennæ yellow. Thorax and abdomen pale green. Wings and wing-cases of a transparent white; the latter having a yellow streak on the anterior margin, which seems to extend along the margin of the thorax. Legs, and the under side of the abdomen, pale yellowish green. The family Blattidæ, corresponding with the Linnæan genus Blatta, may be regarded as containing one of the most obnoxious assemblages of our insect enemies. Of this family, this and the two following figures represent different species. The observations upon the economy of this family, published by our author in the preface to this work, present the most complete account of the ravages and obnoxious qualities of this tribe which has hitherto been published. They are as follows:--