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8. Ephemeridae from South Africa. By ESBEN PETEBSEN. 

 (With 12 Text Figures.) 



ONLY a few species of Ephemeridae are known from South Africa, 

 and therefore I hope that this small contribution to our knowledge 

 of the fauna may be of some interest. The material reported on 

 belongs, with a single exception, to the South African Museum. 



List of the species known from South Africa : 



1. Elassoneuria tr/meniana, MacLachlan. 



2. Polymitarcys capensis, nov. sp. 



3. Hexagenia fulva, nov. sp. 



4. Atalophlebia tabularis, Eaton. 



5. Adenoplilcbia dislocans, Walker. 



6. Adenophlebia ivestermanni, nov. sp. 



7. Tricorythus discolor, Burmeister. 



8. Caenis, sp. A. E. Eaton mentions in his " Eevisional Mono- 

 graph of Eecent Ephemeridae" (Trans. Linn. Soc., Lond., 1888, 

 pp. 142 and 308) an undescribed species of that genus from Cape 

 Town. 



9. Centroptilum bifasciatum, nov. sp. 



10. Cloeon africanum, nov. sp. 



11. Cloeon, sp., undescribed. A. E. Eaton, Trans. Ent. Soc., 

 Lond., 1871, p. 103 ; Trans. Linn. Soc., Lond., 1888, p. 186. 



12. Ecdyurus peringueyi, nov. sp. 



13. Ecdyurus, sp., undescribed. A. E. Eaton, Trans. Linn. 

 Soc., Lond., 1888, p. 309. 



GEN. ELASSONECJBIA, Eat. 

 ELASSONEURIA TRIMENIANA, MacLachlan. 



Oligoneuria trimeniana, MacLachlan, Ent. Monthl. Mag., vol. iv., 

 1868, p. 177-178 ; A. E. Eaton, Trans. Ent. Soc., Lond., 1871, p. 56, 

 pi. hi., 9-9. 



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