30 SJOSTEDTS KLLIMANDJARO-MERU EXPEDITION. 17: 2. 



Usambara: Mombo (June). One female. Previously recorded from Mozambique 

 and Nyassaland. 



Farn. 



Blattidte. 



The old-world genera of Blattidse with the posterior metatarsus longer than 

 the remaining joints and the tibial spines in three rows may provisionally be distin- 

 guished as foUows: 



1. Tegmhaa of J" reduced, sonietimes very short, wings present or abvsent; of 

 ? reduced, sometimes quadrate, never squamiforni. 



Blatta L. 



Type Orientalis L. 



2. Tegmina and wings of cj" longer than body, no scent-glands opening on l^*- 

 abdominal tergite, inesonotum and metanotum with short backwardly directed pro- 

 cesses. Tegmina of ? quadrate, wings absent, penultimate tergite not concealed by 

 antepenultimate tergite. 



Cartoblatta gen. n. 



Type pulchra sp. n. 



3. Tegmina and wmgs of cT longer than body, scent-gland opening on l^'' ab- 

 dominal tergite, mesonotum and metanotum with long backwardly-directed processes. 

 Tegmina of ? squamiforni, wings absent, penultimate tergite almost concealed by 

 antepenultimate tergite which is depressed and declivous. 



Pseiuloderopeltis Keauss. 



Type antennata Sauss. 



4. Tegmina squamiform in both sexes, in $ penultimate tergite not concealed 

 by antepenultimate tergite, which is not declivous. 



Stylopyga Fisch. 

 Type rhombifolia Stoll. 



5. Tegmina and wings longer than the body in both sexes; pronotum trape- 

 zoidal, anterior border arcuate, sides deflexed. 



Periplaiieta Burm. 



Type americana L. 



6. Closely allied to Peri'planeta but the pronotum elliptical, the anterior border 

 truncate, sides not deflexed. 



Houialosilpha Stal. 

 Type ustnkHa Burm. 



It is not easy to separate females of Stylopyga from females of Psexidoderopellis, 

 the declivous 6*1^ abdominal tergite almost entirely hiding the 7'''> tergite is perhaps 

 the most distinctive feature of the latter genus, giving the insects a peculiar truncate 



