HYDROCANTHAEI. 



19 



ILYBIUS Ericks. 



Colymbetes Marsh, fyc. 



I. ater Degeer. Fair. Erichs. Europe. B. M. 



Aube, Icon. v. t. 14. f. 4. British Islands. 



C. fenestrates Payk. Oliv. in. t. 3. 



f. 27. a. 

 quadrinotatus ? Steph. 



I. oescueus Harsh. Steph. Europe. - B. M. 



C. quadriguttatus Lacorcl. Erichs. British Islands. 

 Aube Icon. x. t. 14. f. 5. 



I. SEXDENTATUS ScModte. 



Dan. El. 



I. QUADROIACULATUS Allbe. 



I. biguttulus Germ. Aube. 

 fenestratus Say {not Fabr) 

 fenestralis Say ? 



Denmark. 



North America. 



N. America (U. States). B.M. 



Edward Doubleday, Esq. 

 Ent. Club. 



Europe. 



I. fenestratus Fabr. Erichs. Aube 

 Icon. v. t. 14. f. 6. 

 D. seneus Panz. F. I. G. 38. f. 16. British Islands 

 Dyt. lacustris Fabr. 



I. sub-Sneus Erichs. 

 fenestratus Gyll. 



B.M. 



Lapland. 

 Europe. 



I. Peescotti Mannerh. Aube. 

 Icon. v. t. 15. f. 1. 



I. confusus Aube. 



I. picipes Kirby. 



Faun. Boreali-Ainer. p. 71. 



I. guttigee Gyll. Sahib. Erichs. 

 Aube, Icon. v. t. 15. f. 2. 



I. angustior Gyll. Sahib. Erichs. 

 Aube, Icon. v. t. 15. f. 3. 



B.M. 



J. R. Crowe, Esq. 



Russia (St. Petersburg). 



N. America (U. States).B.M. 

 (St. Martin's Falls, Albany 



River. G. Barnston, Esq. 



N. America. B. M. 



Eev. W. Kirby. 



(St. Martin's Falls, Albany 



River. G. Barnston, Esq. 



N. Europe. B. M. 



(British Islands). 



N. Europe (British Islands). 



