Mr. R. Shelford's Studies of the Blattidm. 277 



On referring to the Banksian cabinet I found two specimens 

 belonging to distinct species under the name Blatta hrasi- 

 liensis ; one measured in total length 18 ram., and had the 

 abdomen fuscous beneath, the other measured 25'1 mm., 

 and had the abdomen beneath rufous with pale disc. The 

 former specimen corresponds the more closely to the diag- 

 nosis of Fabricius and may be selected as the type of the 

 species; the following is a description of it: — 



^ . Dull testaceous. Head with a few small brown macula? on tlie 

 front and face, palpi pallid ; (antennce broken). Pronotum liroadly 

 transverse not covering the vertex, lateral margins broadly hyaline, 

 disc testaceous, unspotted. Tegmina testaceous hyaline, un- 

 spotted ; mediastinal vein unbranched, radial vein with eight 

 costal branches, the two last bifurcate, apex of radial vein ramose 

 and not reaching end of tegmina, anterior ulnar vein bifurcate, 

 the branches becoming ramose, posterior ulnar vein simple, anal 

 sulcus strongly marked, four axillary veins. Wings hyaline, veins 

 testaceous. Abdomen fuscous above and beneath becoming rather 

 paler towards the extremity ; supra-anal lamina produced subquad- 

 rately, testaceous, posterior border slightly emarginate ; sub-genital 

 lamina semi-orbicular, ample, with lai'ge acuminate styles (cerci 

 mutilated, fuscous). Legs testaceous, coxfe with fuscous line on 

 outer l3(n'der ; front femora with ten spines on the anterior margin 

 beneath, extending from the middle to the apex, the middle ones 

 longest, four spines on posterior margin, mid-femora with six spines 

 on anterior margin, three on posterior margin, hind femora with six 

 spines on anterior margin, four on posterior margin, formula of 

 apical spines i, x? i, of genicular spines 0, 1, 1. 



Total length, 18 mm. ; length of body, 12-2 mm. ; length of 

 tegmina, 15 mm. ; breadth of pronotum, 6"5 mm. 



The other specimen is slightly darker in colour. (^ . Eyes whitish- 

 grey, face testaceou?, a rufo- fuscous stripe on the Irons extending 

 down to the base of the clypeus, thinning out to a line on the vertex. 

 Pronotum more trapezoidal, lateral margins hyaline. Tegmina with 

 two-branched mediastinal vein, radial vein giving off eleven costals, 

 its end ramose, seven axillary veins. Aljdomen rufous beneath witli 

 the disc paler ; supra-anal lamina triangularly produced ; sub- 

 genital lamina narrow, produced, asymmetrical with one acuminate 

 style. Front femora with two spines on anterior margin beneath in 

 the middle, four on the posterior margin (hind femora lost), formula 

 of apical spines, ", I- 1 



Total length, 25'1 mm. ; length of body, 17 lum. ; length of 

 tegmina 21 mm. ; (pronotum crushed). 



