102 I\Ir. "B. r. Uv:u-ov on 



of a lighter sliadc than the fascia ; lateral lohcs reddish 

 l)iowii, darker along the \ii)|)cr margin. ]"]lvtra pale huft" 

 l)asally and hyaline apically. with the la'incipal veins reddish 

 brown. Wings hyaline, with the principal veins somewhat 

 reddened basally and pale hnlT elsewhere. Hind femora 

 on the ontside brownish biitl', with the lower part of tlie 

 externo-niedian area yellowish (corresponding to the lateral 

 fascia on the head, pronotum, and pleurae) ; the inside with 

 a deep brack fascia along the basal two-thirds of the lower 

 niar-iin, which emits several brown transverse faseiie. llind 

 tibiie of the general colour, beneath with the base and ajtex 

 black ; tlie spines with the tips brown. 



2 (type). 



mm. 



Length of bodv 57 



„ bead 7 



„ pronotum 8 



„ elytra 25 



„ Liud fenicra. ... 20 



The unique type-specimen of this interesting insect was 

 taken by Mr. F.\le Klerk at Pretoria in April 1921, and 1 

 have much pleasure in dedicating it to the collector. 



Subfamily Locustix^. 

 2. G^daJeus gracilis, Sauss. 



1884. Qi\daleus] niyrofasciatus var. (jracilis, Sau^jsurc, Prod. (Edipod. 

 p. 116. no. 8. " 

 (Edaleus niyrofasciatus, auctorum (uec De C!eir), ex parlim. 



This is one of the most common species of (lulaleus in 

 South Africa, and it is quite distinct from the Talaiarctic 

 (). nii^rofasci(it/is,()\\\n'^ to tlie more slender habitus^ smaller 

 head, and, especially, the shape of the })ronotum, which in 

 (). niyrofasciatus is rectangular behind, wiiile in O. gracilis 

 it is obtusely rounded ; this form of the hind pronotal 

 margin is intermediate between that in O. nigrofasciuliis aud 

 (). senegalensts, in which the pronotum is widely rounded 

 behind. Some more slender specimens of O. niyrofasciatus 

 arc very much like O. gracilis, but always easily se])aralcd 

 l)y the shape of pronotum, and 1 believe that I am quite 

 correct in restricting the name gracilis, api)lied by Saussure 

 to both Palaearctic and South African slender specimens, to 

 the latter only, and I am sure that O. gracilis is a quite good 

 species, though very closely related to O. nigrojusciulus. 



