A HISTORY OF ESSEX Colchester DYTISCIDJE (continued) Hydroporous discretus, Fairm. Birdbrook (Power) pubescens, Gyll. planus, Fabr. lituratus, Fabr. Agabus biguttatus, Ol. paludosus, Fabr. nebulosus, Forst. conspersus, Marsh. femoralis, Payk. Walthamstow (Fow- ler, Brit. Col.) abbreviates, Fabr. Hainault (J. S. Nor- man) HYDROPHILID^: (continued) Limnebius truncatellus, Thorns. 'I sturmii, Gyll. Colchester chalconotus, Pz. bipustulatus, L. Ilybius fuliginosus, Fabr.) fenestratus, Fabr. Epping (E. Double- day) ater, De G. 1 ,-, , , ,., , J- Colchester obscurus, Marsh. J Copelatus agilis, Fabr. ] p . Rhantus exoletus, Forst. V A? r ui j c ' , (E. Doubleday) pulverosus, Steph. J notatus, Berg. North Woolwich (West) adspersus, Fabr. Epping (E. Double- day) Colymbetes fuscus, L. Colchester Dytiscus punctulatus, Fabr. Epping (Lew- cock) marginalis, L. "j circumflexus, Fabr. J- Colchester Acilius sulcatus, L. J GYRINID.S: Gyrinus elongatus, Aub6. Harwich (Fow- ler, Brit. Col.) marinus, Gyll. Colchester HYDROPHILID.S: Hydrophilus piceus, L. North Woolwich Hydrous caraboides, L. J (West) Hydrobius fuscipes, L. Colchester oblongus, Herbst 1 T> o , i r Lssex coast raracymus nigroaeneus, Sahl. J Anacasna limbata, Fabr. "| globulus, Payk. Colchester Philhydrus testaceus, Fabr.J maritimus, Thorns. Essex coast nigricans, Zett. melanocephalus, Ol. coarctatus, Gredl. Cymbiodyta ovalis, Thorns. Helochares lividus, Forst. Laccobius sinuatus, Mots.] alutaceus, Thorns. J- Colchester - bipunctatus, Fabr. J Berosus luridus, L. Epping (E. Doubleday) affinis, Brulle Rainham (Fowler, Brit. Col.) spinosus, Stev. Essex coast Colchester Donyland papposus. Muls. - Colchester West Ham Colchester nitidus, Marsh. Spercheus emarginatus, Schall. (Billups) Helophorus rugosus, Ol. nubilus, Fabr. intermedius, Muls. Walton-on-Naze (Fowler, Brit. Col.) aquaticus, L. Colchester dorsalis, Marsh. North Woolwich (West) aeneipennis, Thorns. Colchester affinis, Marsh. Northey Isle (Janson) brevipalpis, Bedel. Hydrochus angustatus, Germ. I Octhebius marinus, Payk. Colchester pygmaeus, Fabr. bicolon, Germ. rufimarginatus, Steph. Birdbrook (Ent. xvii. 1 60) exaratus, Muls. Essex coast aeneus, Steph. Birdbrook (Power) asratus, Steph. Southend (Ent. xvii. 1 60) punctatus, Steph. Essex coast Hydraena testacea, Curt. Epping (Fowler, Brit. Col.) riparia, Kug. Colchester nigrita, Germ. Epping Cyclonotum orbiculare, Fabr. 1 Sphaeridium scarabaeoides, Fabr. V Colchester bipustulatum, Fabr. Cercyon littoralis, Gyll. Essex coast depressus, Steph. North Woolwich (West) haemorrhous, Gyll. haemorrhoidalis, Herbst obsoletus, Gyll. flavipes, Fabr. lateralis, Marsh. melanocephalus, L. unipunctatus, L. quisquilius, L. nigriceps, Marsh. > Colchester pygmaeus, 111. terminatus, Marsh. analis, Payk. lugubris, Payk. Megasternum boletophagum, Marsh. Cryptopleurum atomarium, Fabr. STAPHYLINID.S Aieochara ruficornis, Grav.] fuscipes, Fabr. j- Colchester - lata, Grav. brevipennis, Grav. Southend (Fowler, Brit. Col.) 122