Hyphydrics ovatus. — Common in stagnant water. Rainham, etc. 

 Cd'lavibzcs veisicolor. — In ditches, scarce. Rainham. 



,, incEqiialis. — In ditches, common. Rainham. 



, confluens. — ^Rare. In small pond at Upnor Sand-pit. 



„ impressopiinctaUis, — In ditches at Rainham. Fairly common. 

 Hydroporiis pictus. — Common. Fresh water ditches. Snodland, etc. 



,, dorsalis. — Stagnant water. Rather common. 

 » ,, Ihieahcs. — Rather common iu fresh water ditches. Rainham. 



„ angustatus. — Rather common in fresh water ditches. Rainham. 



,, pahist7-is. — Stagnant water. Common everywhere. 



,, eyythrocephalus. — Ponds at Chattenden. 



,, tnemnonhis. — Damp places. Sweeping at Chattenden. Rare. 



„ pubescens. — Pond near Keeper's House, Chattenden. Common. 



,, planus. — Pond near Keeper's House, Chattenden. Common. 



,, Iitu7-at7is. ' -Vond near Keeper's House, Chattenden. Common. 

 Agabus didyvitis. — Pond at Chattenden. Rare. 



,, 7ieb2closus. — Pond Upnor Sand-pit. Rare. 



,, conspersiis. — In brackish ponds. Not rare. 



,, sturmi. — In brackish ponds. Common. 



,, chalconohis. — Ponds at Chattenden. 



,, bipustnlattis. — Ditches, ponds, etc. Common everywhere. 

 Ilybhis atcr. — In ponds at Chattenden. Rare. 



,. obscurus. — Fresh-water ditches. Snodland, etc. 

 Copelahcs agilis. — ^Fresh-water ditches. Rainham. Common. Spring 



and Autumn. 

 Rhantus pidverostis. — Stagnant Water. Snodland and Rainham. Scarce. 



,, notahis. — Ponds. Chattenden. etc. Scarce. 

 Colymbetes fusais. — Ponds and Ditches. Everywhere common. 

 Dytiscus ptincUdatus. — Rainham Marshes. (Esam). 



,, marginalis. — Common in ponds in all districts. 



,, circumflex2is. — Ponds. Woodland Farm, etc. (Chaney). Rare. 

 Aciluis salcatus. — Ponds near Keeper's House, Chattenden. 



Gyrinid^. 

 Gyi'inus natatoi-. — Common on all our Ponds. 



,, elo7igaUis. — Ditches at Rainham, etc. 



Hydrophiud^. 

 Hydrobius fuscipes. — Wet Ditches, Puddles, etc. 

 Anac(S7ia liinbata. — Wet Places. Common. Higham, etc. 



,, globtchis. — Wet Places. Common. Higham, etc. 

 Philydrus testacetis. — Stagnant Water. Rare. Rainham, etc. 



,, maritiimis. — Brackish Waters. Occasional. 



,, nigricans. — Brackish Waters. Occasional. 

 Cymbiodyia ovalis. — Stagnant Water. Rainham, etc. 

 Enochrus bicolor. — Stagnant Water. General. 

 Laccobius ;/nn7<i7(s. — StSLgna.nt water. General. 



,, bipicnctaUis. — Stagnant water. Occasional. 

 Berosus hiridiis. — Brackish ditches. Rainham. Sparingly found. 



,, affinis. — Brackish ditches. Rainham. Sparingly found. 

 Limnebins pappos2is. — Wet places. Common. 



,, t}iL7icatelhis. — Banks of ponds. Scarce. 

 Chata7-th/-ia seDiiiuchoji. — Wet moss and rubbish. Higham. Rare. 



