— 572 — 



Varietas. Pronoti discus maculis brunneis obsoletissimis: alarum vena ulnaris ramos 

 incompletos nuUos gerens. 



Long. 12; pronot. 3; latit. 4,2; elytr. 14 mm. 

 Africa mei'idionalis. 



Genus Chrastoblatta Sauss. 

 1. Chrastoblatta tricolor Sauss. et Zehnt n. 

 Ap. Grandidier, Eist, de Madagascar, Ortb., p. 21; pl, II, fig. t7, $ 



Nigra; antennis annulis 2 luteis, pronoto utrinque margine incompleto lateritio; elytris 

 area basali albida, alis antice infuscatis; tibiis posticis apice constrictis. 



9. Lamina infragenitalis transversa, margine postico subangulato, miniite inciso. — 

 (?. Lamina supraanalis margine postico arcuato. Septimum segmentum ventrale sinuatum, 

 octavum valde irreguläre, tantum in latere sinistro perspicunm, de reliquo complete excisum. 

 Lamina infragenitalis profunde incisa, bilobata, vel irregularis, frequenter in latere dextro 

 incisa. Styli grandes 2 nigri; dexter brevior, basi crassus, apice truncatus, in incisura laminae 

 infra-genitalis exsertus. Sinister longior. arcuatus, basi incrassatus, infra lobum i)erspicuum 

 octavi segmenti exsertus. 



Madagascar centralis. 



Genus Blatta Lin. 



Subgenus Blatta Sauss. 



1. Blatta niadecassa Sauss. et Zehntn. 

 Ap. Grandidier, Eist, de Madagascar, Orth., p. 29, 3. 



Fulvo-testacea, B. germanicae simiilima at minor: pronoto nigro-bivittato . vittis 

 antice et postice incorapletis; alarum venis costalibus parum numerosis; lamina supraanali 

 9 transversa, obtusangulata, c? brevi, truncato-rotundata, band prominula. 



Long. 9 9 mm, S 9,25 mm. 



Madagascar centralis. 



2. Blatta difßcilis n. 



Sat minuta ; tota fulvo-testacea, signaturis fuscis nuUis. l'ronotum pellucidum, disco 

 fulvo. Elytra abdomen superantia, apice subacuminata , margine costali subarcuato; 



