466 Mr. W. L. Distant on Ethiopian Heteroptera. 



five oncliospheres. The latter (without their envelopes) 

 measure 15 /u. in diameter. 



This appears to be only the second species of Davainea 

 met with in this family of birds (Bucerotidte) ; tlie one 

 hitherto described is D. empenis, Skrjabin, 1914*, from 

 Buceros seratogynina. The present species differs from 

 D. emperus in the number of its testes, the absence of the 

 well-developed sphincter-muscle of the genital cloaca, and 

 other details. The scolex uiifortutiately cannot be compared 

 in the two species, as that of D. emperus is unknown. 



XLVI. — Ethiopian Heteroptera : some new Species of Redu- 

 viid;ie belonging to the Gt-nera Pysttala and Platymeris. 

 By W. L. Distant. 



Pysttala. 



Pysttala, Stfil, CEfv. Yet.-Akad. Forh. 1859, p. 187. 

 Platymeris, Lap. ("part.), StSl, ibid. ; Hem. Afr. iii. p. 123 (1865). 



" Thoracis lobo poatico quadrispinoso, antico multispinoso, hem- 

 elytris spinulis armatis." 



Type, P. ducalis, Westw. 



Although Stal subsequently relegated Pysttala. to a section 

 of the genus Platymeris, it is clearly entitled to generic rank, 

 and I am now able to add four more species to it. Of the 

 type, ducalis, Westw., I can only refer to Westwood's figure 

 and description, for the type cannot be traced by Prof. Poulton 

 at Oxford ; and although Westwood stated that another 

 specimen was contained in the British Museum I'rom Sierra 

 Leone, no such example is now to be found in the National 

 Collection. 



Pysttala samwelli, sp. n. 



Head, pronotum, corium, body beneath, and legs black ; 

 membrane dark ferruginous brown, especially on its apical 

 area ; a subquadrate spot near middle of corium, a broad 

 subapical fascia to the femora, and somewhat large marginal 

 spots to the abdomen sanguineous; antennee with the first 

 joint black, moderately stout, not quite reaching base of 

 Jiead, second joint ferruginous, about three times as long as 

 first, third more ochraceous in hue, both second and third 



* C.B. Balit.; Jena (orig.), Ixxv. p. 69. 



