648 Mr. R. Shelford on the Studies of the Blattidm. 



Tegmina with 19 costals, radial and anterior ulnar veins simple, 

 posterior ulnar 5-ramose. Wings hyaline, costal margin faintly 

 suffused with llavid, mediastinal vein simple, 18 costals the more 

 proximal slightly incrassated, medio-discal area nearly four times 

 broader in the middle than the medio-ulnar area, crossed by about 

 13 transverse venules, a prominent apical triangle, 1st axillary 4- to 

 5-ramose. 1st abdominal tergite produced as a flat narrow process 

 extending nearly to the apex of the abdomen, grooved along its 

 dorsal aspect and slightly spatulate at its extremity; 8th tergite 

 depressed and punctate in the middle, the posterior angles triangularly 

 produced. Supra-anal lamina quadrately produced, apex slightly 

 bilobed, covering the bases of the cerci which are short and situated 

 close together. Subgenital lamina produced, asymmetrical, apex 

 concavely emarginate, two minute styles. Femora moderately 

 armed, front pair with 3 stout spines on the anterior margin 

 beneath, succeeded distally by piliform setae (Type B). 



9 . Similar, eyes less close together on vertex of head. Wings, 

 uniformly suffused with pale flavid. Supra-anal lamina produced, 

 trigonal ; subgenital lamina semi-orbicular, ample. Cerci longer 

 not situated close together. 



Total length ($) 9 mm., (9) 11 mm. ; length of body {£) 8-1 

 mm., (9) 9*6 mm. ; length of tegmina (£) 7 mm., (9) 9*5 mm. ; 

 pronotum ( <$ ) 2 - 9 mm. x 32 mm., (9)3 mm. x 4*5 mm. 



Hah. S.E. and N. Kamertjn {Conradt) (Berlin Mus., 

 types; coll. Bolivar); Biafra, Cabo S. Juan (Escalera) 

 (Madrid Mus. ; Oxford Mus.). 



Ther/anopteryx cmncrunensis, sp. n. 



Differs from T. fantastica by the greater distance apart of the 

 eyes in both sexes, the smaller size of the 9 > the absence of the 

 process of the 1st abdominal tergite in the <$ . Colour and venation 

 as in T. fantastica. Supra-anal lamina {<$) subquadrate, not 

 strongly produced, apex emarginate, ( 9 ) triangular. Subgenital 

 lamina (<^) symmetrical, posteriorly concavely emarginate, two 

 minute styles. Cerci short, fusiform, very broad at base with 8 

 visible joints in ^ , narrower and longer in 9 • 



Total length {£) 8-5 mm., (9)9 mm. ; length of body {£) 7-1 

 mm., (9) 7 mm.; length of tegmina (J) 7 mm., (9) 7 mm.; 

 pronotum 2 mm. x 3 mm. 



Hah. S.E. Kamerun {Conradt) (Berlin Mus., type $ ; 

 coll. Bolivar, type $)• 



