SHELFORD, BLATTODKA. 31 



appearance when viewed from the side. It is probable that the genus Blatta will 

 have to be further subdivided, orieiitalis L., condnna Haan. and a-'^.siiiipvsis Boi.. to 

 take three examples, do not appear to be congeneric. 



Gen. PiU'ainetliau.a nov. 



Differs from Dorijlaca ' Stal in the size of the second pulvillus of the posterior 

 tarsi which covers the whole second joint, and differs from Methana Stal in the 

 reduction of the tegmina and wings wliich do not extend beyond the fifth abdominal 

 tergite. Third antennal joint nearly three times as long as the second. 



riirainetliiuiii rohiista sp. n. 



(PI. 2. fis. 7.) 



?. Dark castaneous, nitid, broadly elliptical. Head castaneous, clypeus and 

 mouth-parts rufo-testaceous, eyes less remote than antennal sockets, antennae fuscous, 

 except the two basal joints which are rufo-testaceous; vertex of head not covered 

 by pronotum. Pronotum broad, trapezoidal, sides deflexed, posterior margin sinuate, 

 castaneous with a central rufo-castaneous mark, or rufo-castaneous with darker 

 castaneous marks. Tegmina short and broad, overlapping considerably, semi-corneous, 

 veins well-marked, mediastinal vein bifurcate, 9 costals, the last three ramose, anal 

 vein deeply impressed, reaching sutural margin at a point one-third from apex. 

 Wings a little shorter than tegmina, flavo-hyaline, apex slightly infuscated. Abdomen 

 piceous above, castaneous below, posterior angles of penultimate tergite strongly pro- 

 duced, its posterior margin slightly produced, sinuate; supra-anal lamina produced, tri- 

 angular, apex emarginate and deeply cleft. Cerci long, subacuminate, of thirteen joints. 

 Legs rufo-castaneous, front femora with a complete row of spines on anterior margin 

 beneath; tibial spines in three rows; posterior metatarsus exceeding remaining joints 

 in length, bi-spinulose beneath, pulvilli of remaining joints large occupying the whole 

 extent of the under surface of the joints. Total length 2.3 mm.; length of tegmina 

 13 mm.; pronotum 7 mm. x 10,i mm. 



Lower Meru (November); 4 ??. 



Gen. Blatta L. 



Blatta proi>iiu|ua sp. n. 



Allied to B. jlavilatem Sauss. but tegmina in both sexes sub-lobiform. 

 (/. Dark castaneous. Head with clypeus flavid, ocelli not visible, antennae 

 rufo-castaneous. Pronotum with a broad semicircular band of rufous on each lateral 



' The type of the genus Doriiluca is hranncri StAi,. a species closely allied to flavicmcta Haan; both 

 species are characterized l)y peculiar maxillary palpi and l)y the small size of the second pulvillus of the posterior 

 tarsi; these are good generic characters. In Biol, t'entr. Anier. Ortli. I, p. 6i). 1893, de Saus.sukf. and Zehntnek 

 re-detixie the genus DorijJacu and transfer to it the apterous species rhomhifoUa Stoll. which is certainly not 

 congeneric with flaricincfa Haan and hmiuiryi Stal. Tiiis procedure is quite unnecessary, rlioiiilii folia is a 

 characteristic species of the genus Sti/lopyi/a. no useful purpose is served by forcing it into a genus that already 

 iiicluiles two species marked by ditferent generic I'hai'acters. 



