A HISTORY OF ESSEX COLLETIDX (continued) Prosopis confusa, Nyl. brevicornis, Nyl. pictipes, Nyl. ACUTILINGUES ANDRENIDJE Sphecodes, Latr. gibbus, L. subquadratus, Smith spinulosus, v. Hag. puncticeps, Thorns. pilifrons, Thorns. - similis, Wesm. - rubicundus, v. Hag. - ferruginatus, Schenck. - hyalinatus, Schenck. variegatus, v. Hag. dimidiatus, v. Hag. affinis, v. Hag. Hal ictus, Latr. rubicundus, Christ. xanthopus, Kirb. leucozonius, Schrank. quadrinotatus, Kirb. - sexnotatus, Kirb. - cylindricus, Fabr. - albipes, Kirb. - subfasciatus, Nyl. - villosulus, Kirb. breviceps, Saund. punctatissimus, Schenck. nitidiusculus, Kirb. minutissimus, Kirb. tumulorum, L. - smeathmanellus, Kirb. - morio, Fabr. - leucopus, Kirb. Andrena, Fabr. albicans, Kirb. pilipes, Fabr. bimaculata, Kirb. - rosse, Pz. - v. trimmerana, Kirb. - v. spinigera, Kirb. - nitida, Fourc. cineraria, L. fulva, Schr. - clarkella, Kirb. nigroaenea, Kirb. gwynana, Kirb. v. bicolor, Fabr. angustior, Kirb. praecox, Scop. varians, Rossi ambigua, Perk. - helvola, L. - fucata, Smith - nigriceps, Kirb. tridentata, Kirb. denticulata, Kirb. ANDRENID.S: (continued) Andrena fulvicrus, Kirb. fasciata, Nyl. hattorfiana, Fabr. cetii, Schr. cingulata, Fabr. albicrus, Kirb. chrysoceles, Kirb. - coitana, Kirb. - fulvago, Christ. - humilis, Imhoff. labialis, Kirb. minutula, Kirb. nana, Kirb. dorsata, Kirb. similis, Smith - wilkella, Kirb. afzeliella, Kirb. Cilissa, Leach haemorrhoidalis, Fabr. leporina, Pz. Dasypoda, Latr. hirtipes, Latr. Nomada, Fabr. obtusifrons, Nyl. solidaginis, Pz. sexfasciata, Pz. succincta, Pz. lineola, Pz. alternata, Kirb. jacobaeze, Pz. ruficornis, L. bifida, Thorns. borealis, Zett. ochrostoma, Kirb. armata, H. SchfF. ferruginata, Kirb. fabriciana, L. flavoguttata, Kirb. furva, Pz. APID.S Epeolus, Latr. productus, Thorns. rufipes, Thorns. Ceratina, Latr. cyanea, Kirb. Chelostoma, Latr. florisomne, L. campanularum, Kirb. Ccelioxys, Latr. rufescens, Lep. elongata, Lep. acuminata, Nyl. Megachile, Latr. maritima, Kirb. St. Osyth, Soutbend willoughbiella, Kirb. circumcincta, Lep. - ligniseca, Kirb. - centuncularis, L. versicolor, Smith 104