324 xMr. R. Slielford's Studies of the Blattidae. 



Africa" (British Mus., type oi scripta ; Oxford Mus., ^o?'- 

 'man's example)) Lake N'gami (C«s^e/?iaw), (British Mus., 

 type of consjnciia ; Oxford Mus.) ; S. W. Ab^rica, Amboland 

 (G. Scliinz), (Senckenberg Mus.) ; German S.W. Africa, 

 Otjosondu (Berlin Mus., type of strididans). 



21. G. aicriviUn, Borg. 



Gyna aurivillii, Borg, Bih. Svensk. Vet.-Akad. 

 Handl., xxviii, Afd. 4, No. 10, p. 20, L^l. II, f. 5 (1902). 



Tliis is very close to the preceding species, but tlie eyes in the 

 ^ are closer together and in both sexes the tegmina have no 

 rufescent macula on the disc of the tegmina, there is however a 

 conspicuous piceous spot between the radial and mediastinal veins 

 which is reduced or absent in caffrorum. The fusing of the lyrate 

 markings on the vertex is a variable character. 



{^. Total length 27 mm.; length of body 23 mm.; length of 

 tegmina 24 mm. ; pronotum 8'4 mm. x 9"4 mm. 



Kamerun (Stockhohii Mus., type ; Berlin Mus.). 



22. G. hycdina, sp. n. 



9 . Clear testaceo-hyalinc, head and antennae, abdomen and legs 

 rufo-castaneous. Eyes close together on vertex (less than 1 mm. 

 apart). Pronotum anteriorly and posteriorly faintly striate, lyrate 

 markings on disc castaneous and fused together. Tegmina moder- 

 ately broad, immaculate, mediastinal field at base, mediastinal and 

 anal veins castaneous. Wings with costal margin suffused with 

 flavid, ulnar vein with 17 rami, 11 being incomplete. Supra-anal 

 lamina deeply bilobate, sub-genital lamina of tlie usual form. 

 Formula of apical spines of the femora, -J, |, \ ; no genicular spine 

 on front femora. 



T(jtal length 24 nun. ; length of body 17'8 mm. ; length of 

 tegmina 20 mm. ; pronotum G'9 mm. x 8 mm. 



Congo Free State, Iringui (Musee du Congo) ; Vic- 

 toria Nyanza, Bugala, Sesse Archipelago [E. Bcujoii), 

 (Genoa Mus.). 



Readily distinguished by the peculiar hyaline appear- 

 ance of the pronotum and tegmina; also by the apjiroxi- 

 mation of the eyes, an unusual feature in the females of 

 this ffenus. 



