R. Shelford, New Blattidae. 125 



neous. Antennae testaceous. Pronotum as in ' N. cinerea but the 

 central lyrate marking differently arranged and dark castaneous. 

 Tegmina as in N. cinerea but just exceeding the apex of the ab- 

 domen, radial vein not marked at base. Abdomen above testa- 

 ceous speckled with castaneous, with lateral blotches of castaneous ; 

 supra-anal lamina sub-quadrately produced, posteriorly emarginate ; 

 abdomen beneath testaceous with a broad castaneous band on 

 each sternite except the last, where the band is replaced by a 

 round spot ; a lateral castaneous blotch on each sternite. Sub- 

 genital lamina as in N. cinerea. Legs testaceous, formula of apical 

 spines f, T , |. 



Total length 15,5 mm; length of body 15 mm; length of 

 tegmina 11 mm; pronotum 5 mm X 6 mm. 

 1 $, Cameroons (L. Conrad t). 



I have examined a good series of N. cinerea from all parts 

 of the world and find that the species is quite constant in the form of 

 markings on the pronotum and in the colouration of the abdomen; 

 the West African form has these markings dark castaneous instead 

 of pale castaneous, but they correspond in shape and arrangement 

 with the markings on the pronotum of forms from other parts of 

 the world. I have therefore little hesitation in separating this 

 small form as a distinct species. 



Nauphoeta bicolor n. sp. 



cj. Head dark castaneous, nitid, ocelli and palpi testaceous. 

 Eyes further apart than length of l st antennal Joint ; antennae 

 fuscous ; Vertex projecting beyond the anterior margin of the 

 pronotum. Pronotum castaneous , sides deflexed , posteriorly 

 scarcely angulate ; two circular impressions on posterior half of 

 disc and a few scattered punctures. Scutellum hidden. Tegmina 

 testaceous scarcely extending beyond apex of abdomen, seriately 

 punctate between the veins, radial veins piceous only at its 

 extreme base. Wings suffused with castaneous. Abdomen casta- 

 neous, the disc beneath rufescent ; supra-anal lamina quadrately 

 produced, posteriorly emarginate ; sub-genital lamina as in the 

 two preceding species. Cerci short, acuminate. Legs castaneous, 

 formula of apical spines f, T , •£, genicular spines very small, none 

 on front femora. 



$ Similar, but tegmina not quite reaching apex of abdomen ; 

 no impressions on disc of pronotum ; supra-anal lamina more 

 deeply emarginate. 



S Total length 27 mm ; length of body 24 mm ; length of 

 tegmina 18,8 mm ; pronotum 7 mm X 10 mm. 



