HYDROCANTHARI. 19 



ILYBIUS Erichs. 

 Colymbetes Marsh, $-c. 



/ I. ATER Degeer. Fabr. Erie/is. Europe. B. M. 



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



C. fenestratus Payk. Oliv.ui. t. 3. 



f. 27. a. 

 quadrinolatus ? Steph. 



I. OBSCUBUS Marsh. Steph. Europe. B. M. 



C. quadriguttatus Lacord. Erichs. British Islands. 

 Aube Icon. v. t. 14. f. 5. 



I. SEXDENTATUS Schiodte. Denmark. 



Dan. El. 



I. QUADRIMACULATUS Aube. North America. 



I. BIGUTTULUS Germ. Aube. N. America (U. States). B.M. 



fenestratus Say (not Fabr.) Edward Doubleday, Esq. 



fenestralis Say /> Ent. Club. 



YI. FENESTRATUS Fabr. Erichs. Aube. Europe. B. M. 



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



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

 Dyt. lacustris Fair. Lapland. 



I. SUBJENEUS Erichs. Europe. B. M. 



fenestratus Gyll. j. E. Crowe, Esq. 



I. PRESCOTTI Mannerh. Aube. Russia (St. Petersburg). 



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



I. CONFUSUS Aube. N. America (U. States). B.M. 



(St. Martin's Falls, Albany 



River. G. Barnston, Esq. 



I. PICIPES Kirby. N. America. B. M. 



Faun. Boreali-Amer. p. 71 . Kev. w. Kirby. 



(St. Martin's Falls, Albany 



River. G. Barnston, Esq. 



I. GUTTIGER Gyll. Sahib. Erichs. N. Europe. B. M. 



Aube, Icon. v. t. 15. f. 2. (British Islands). 



I. ANGUSTIOR Gyll. Sahib. Erichs. N. Europe (British Islands). 



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



