Mr. R. Shelford's Studies of the Blattidae. 307 



3. Posterior margin of pronotum not 

 bordered with flavo-testaceous. 

 4. Disc of pronotum immaculate . . M. margincdis, Sauss. 

 4'. Disc of pronotum with two ochr- 



eous maculae M. soror, Sauss. 



3'. Posterior margin of pronotum bor- 

 dered with flavo-testaceous. 

 4. Tegmina laterally margined with 



flavo-testaceous M, paima, Shelf. 



4'. Tegmina uniform castaneous . . M. hosei, sp. n. 

 Species of doubtful position 31. ixillipcdpis, Serv. 



1. M. magna, sp. n. 



(J and $ . Castaneous, nitid. Head sordid testaceous, vertex, a 

 band between the antennal sockets, a ^-shaped band at base of 

 clypeus, castaneous. Antennae with basal joint testaceous, remain- 

 der castaneous. Pronotum with sides deflexed, posteriorly truncate. 

 Tegmina and wings exceeding apex of abdomen. Supra-anal lamina 

 ( (J ) quadrate, fimbriate, margins entire, ( $ ) triangular, apex widely 

 emarginate. Cerci very long, acuminate. Genital styles {$) very long 

 and slender. Coxae and front legs testaceous, mid femora rufo- 

 testaceous with castaneous lines, mid-tibiae and tarsi and hind legs 

 castaneous. Posterior metatarsus a trifle shorter than remaining 

 joints, its pulvillus large. 



$ and $. Total length 40-41 mm. ; length of body, 34-35 mm. ; 

 of tegmina, 30-31 mm. ; pronotum 10'5 mm. x 15 mm. 



Borneo, Sarawak {Slielford) (Oxford Mus., $ and % 



types). 



The species bears a close superficial resemblance to 

 Periplancta valida, Br., the type of which I have seen, but 

 can readily be distinguished by the structure of the tarsi. 



2. M. convexa, Walk. 



Feriplaneta convexa, Walker, Cat. Derm. Salt. Brit. 



Mus., Suppl. Blatt., p. 152 (18C9). 

 Methana rnfesccns, Kirby, Ann. Mag. Nat. Hist., ser. 7, 



xii, p. 374 (1903). 



^ . Rufo-castaneous, nitid. Head rufo-castaneous or piceous ; 

 mouth-parts testaceous. Tegmina and wings not extending much 

 beyond the apex of the abdomen. Supra-anal lamina produced, 

 quadrate, margins entire, apex not emarginate. Sub-genital lamina 



X 2 



