10 PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 71 



the disk is broadly margined laterally with yellowish and narrowly 

 so posteriorly, the disk with two broad longitudinal maculations con- 

 verging at the ends, almost meeting anteriorly, the space between 

 them slightly maculate. Abdomen infuscated above, with the pos- 

 terior half of the lateral margins of most segments yellowish, beneath 

 a little lighter; tip of abdomen mutilated; cerci long and broadly 

 flattened, distinctly segmented, the segments nine in number, the 

 terminal one twice as long as broad, the basal three transverse and 

 the rest subquadrate. 



Legs absent except the posterior femora and tibiae and the basal 

 four segments of one tarsus; hind femora strongly armed beneath, 

 the color light yellowish with numerous minute fuscous specks; 

 tarsi black at insertions of the spines. 



Tegmina exceeding the tip of the abdomen; discoidal sectors four 

 or five in number and longitudinal; costal veins not clavate, about 

 ten in number and very long. Wings very short, no more than one- 

 half as long as the tegmina but with well developed venation; ulnar 

 vein simple; costal veins five or six in number, mostly once forked 

 and but slightly clavate. 



Measurements. — Length, pronotum, 2.5 mm.; tegmina, 7 mm.; 

 width, head, 2 mm.; pronotum, 3.5 mm.; tegmina, 2.75 mm. 



Eolotype. — Female, Buitenzorg, March. In National Museum. 



Type.— C&t. No. 29136, U.S.N.M. 



This species seems most nearly allied to the Blatella alliena of 

 Brunner from Burma but appears to differ in various characters from 

 that somewhat larger form. 



BLATELLA PALMERI, new species 



Description, male (female unJcnown). — Conforming with the diag- 

 nostic features of the genus in which it is placed in having discoidal 

 sectors of the tegmina longitudinal, the ulnar branch forked, with the 

 posterior branch itself forked, and the anterior femora armed beneath 

 with a complete row of spines, those toward the apex of the femora 

 shorter. The wing, however, has a very conspicuous apical triangle, 

 almost as board basally as the anterior field of the wing but not 

 attaining the apex of that field and with the outer margin sinuate, 

 thus excluding this roach from the subfamily Ectobiinae where this 

 triangle is apically rounded and either clearly as broad as the anterior 

 field of the wing or attains the apex of that field, usually both. 



The general color is dark reddish brown, the surface polished. 

 Head uniformly dark brown, the eyes somewhat lighter; antennae 

 fuscous, slightly lighter basally. Pronotal disk polished, without 

 furrows or other inequalities, the sides of the disk light yellowish and 

 the center very dark reddish brown without variegation; this dark 

 central portion touches the posterior margin of the disk for its entire 



