ON THE GEOGRAPHICAL DISTRIBUTION OF 

 DERMAPTERA. 



M. Branner de Wattenwyl, in his Essay on the Geographical 

 Distribution of the Blattariae, has divided the globe into these sixteen 

 regions :— 



1. North and Central Europe. 



2. South Europe. 



3. North Africa, Mediterranean coast. 



4. West Africa, coast of the Atlantic. 



5. South and East Africa, coast of the Indian Ocean. 



6. West Asia, Asia Minor, Arabia, Persia. 



7. North Asia, Siberia. 



8. Central Asia, China. 



9. Hindostan, with Ceylon. 



10. East Indies not in British possession, Islands or Australasia. 



11. Australia. 



12. Polynesia, New Zealand. 



13. South America, towards the Pacific. 



14. South America, towards the Atlantic. 



15. Central America. 



16. North America. 



Nine of these, the Nos. 1, 2, 3, 6, 7, 8, 9, 15, 16, are northward of the 

 equator ; two, Nos. 11 , 12, are south of the equator ; and five, Nos. 4, 5, 10, 

 13, 14, are on both sides of the equator. Some small islands of Polynesia 

 north of the equator are exceptions. 



The regions which the genera inhabit are indicated by the numbers 

 after the names of the genera in the following list: — 



BLATTARI/E. Fam. 2. Polyphagia. 



Polyphaga 2, 3, 5, 6, 8, 9, 14, 15 



Fam. 1. Blaberid-E. Latindia 14 



Blabera 13—16 Tarraga 14 



Monochoda 14 Sisapona 14 



Monastria 14 Laxta 1 1 



Petasodes 14 Ergaula 10 

 Libisoca 15 



