10 ARKIV FÖR ZOOLOGI. BAND 12. N:0 17. 



paper), and might easily be mistaken for that species, from 

 which it differs by the black basal fascia to the connexival 

 segments, the almost impunctate and glabrous venfcer, the 

 medianly shorfcer sixth female ventral segment, and the strac- 

 ture of the two female genital segments. 



In this genus the female genital segments give good spe- 

 cific characters and are of very unusual shape in some species. 



22. Platymeris biguttata L. 



Njoro. • 



In his description of P. Rhadamanihus Gerstäcker 

 compares it only with P. giittatipennis Stål, from which it 

 is quite distinct, but does not at all compare it with P. bi- 

 guttata from which it is not specifically distinct, differing 

 only by the somewhat shorter and less acute lateral spines 

 to the scutellum. The spöt on the corium and the annula- 

 tion of the femora are in this species sometimes yellow, so- 

 metimes red, and the annulation to the liind femora is some- 

 times lacking. The specimen from Njoro is in all structural 

 details identical with the typical form. 



23. Platymeris flavipes n. sp. 



Supra nigra, subtus fusco-nigra, corio macula magna 

 flava ad marginem apicalem notato, segmentis tribus primis 

 connexivi supra et subtus fuscis, supra in medio plus minusve 

 flavescentibus, tribus ultimis supra et subtus luride testaceis, 

 ad apicem quarti et quinti plus minusve infuscatis; antennae 

 fusco-testaceae, articulo primo (sterigmate basali exoepto) 

 fusco-nigro; rostrum fusco-ferrugineum; pedes ochreo-flavi, 

 coxis et trochanteribus, basi femorum posticorum summoque 

 apice femorum omnium fuscis. Caput cum r östro (articulo 

 primo hujus densius) ferrugineo-pilosum, articulo primo an- 

 tennarum apicem capitis haud superante, secundo pronoto 

 pauUo longiore. Pronotum pauUo latius quam longius, parce 

 breviuscule nigro-pilosum, lobo antico inermi et tubercuUs 

 destituto, sed sculpto, angulip apicalibus rotundatis, lobo po- 

 stico antico fere sesqui longiore, dimidio postico disci, lateribus 

 exceptis, in longitudinem rugoso, anguHs lateraUbus leviter 

 prominuhs, distincte angulatis sed in spinam non productis. 

 Scutellum parce nigro-pilosum, apice in spinam breviusculam 

 suberectam recurvum, spinis lateralibus brevissimis, tuber- 



