A HISTORY OF HERTFORDSHIRE Anisosticta i g-punctata, L. Wihtone, very common, at the reservoir ; Hertford (Stephens) Adalia obliterata, L. . bipunctata, L. / * Mysia oblongoguttata, L. Hertford (Ste- phens) Coccinella xo-punctata, L. ~ n-punctata, L. j- Tring 7-punctata, L. J Halyzia 1 6-guttata, L. Tring, rare 14-guttata, L. Tring 1 8-guttata, L. Hertford (Stephens) - conglobata, L | r . 22-punctata, L. J Micraspis sedecimpunctata, L. Aldbury, scarce ; have only seen this insect on Aldbury Owen Scymnus pygmaeus, Fourc. Aldbury, not common frontalis, F. Tring suturalis, Thunb. Tring, rare ; once found in moss under some fir trees testaceus, Mots. Tring, rare ; a small variety of this species at the roots of Thymus serpyllum haemorrhoidalis, Herbst. ,,- capitatus, F. / minimus, Rossi. Tring, of frequent occurrence in the garden Platynaspis luteorubra, Goeze. Hertford (Stephens) Chilocorus similis, Rossi. Tring. I once witnessed an extraordinary swarm of this insect in a plantation consisting chiefly of ash, when there must have been scores of the insect crawling on some of the trees ; this was in April bipustulatus, 111. Hertford (Stephens) Exochomus quadripustulatus, L. Wihtone, one example only, on a willow Rhizobius litura, F. Tring Coccidula rufa, Herbst. Tring, common, at the reservoirs ENDOMYCHID.E Mycetaea hirta, Steph. Tring, not com- mon, in refuse Alexia pilifera, Mull. Aldbury, in dead leaves Lycoperdina bovistae, F. Aldbury, rare. This insect is by no means confined to puff-balls, for I once found a num- ber in a very putrid lamellated fungus growing in a wood near Tring (in Bucks), and have had a similar experi- ence elsewhere Endomychus coccineus, L. Aldbury and Tring, common, under bark of beech ; Stubbing!, Pavis and Aldbury Outers woods EROTYLID.E Dacne humeralis, F. Tring, rare, in de- caying beech tree rufifrons, F. Tring PHALACRIDJE Phalacrus corruscus, Payk. Tring caricis, Sturm. Wihtone and Putten- ham, very common, on Carices, be- side the Collateral canal, in May Olibrus corticalis, Panz. Tring, fairly common asneus, F. "j bicolor, F. > Tring Eustilbus testaceus, Panz. J atomarius, L. Miswell, one only, in a hedgerow MICROPEPLID^E Micropeplus porcatus, Payk. Aldbury staphylinoides, Marsh. - . margaritas, Duv. J "** Brachypterus gravidus, 111. Aldbury, on Linaria vulgaris - pubescens, Er. j urticae, F. J Cercus pedicularius, L. Puttenham and Wihtone, on Carices, by the Collateral canal ; Baldock (Wood) bipustulatus, Payk. Little Tring rufilabris, Latr. Little Tring and Wil- stone Epurasa decemguttata, F. Near Hadley Wood, in cossus burrows (Newbery) aestiva, L. Tring melina, Er. Wihtone, scarce, on flowers at the reservoir florea, Er. Tring deleta, Er. Tring Park, in fungus on a tree obsoleta, F. Tring pusilla, Er. Tring, scarce augustula, Er. Tring, one under bark of beech ; Felden (Piffard) Omosiphora limbata, F. Wihtone, two found at the base of an old ash tree, in April Nitidula bipustulata, L. Aldbury rufipes, L. Aldbury, rare Soronia grisea, L. Little Tring, rare, under elm bark ; New Barnet (Newbery) Omosita colon, L. Tring, New Barnet discoides, F. / (Newbery) Pocadius ferrugineus, F. Tring Pria dulcamaras, Scop. Tring and Wil- stone, frequently found on Solanum dulcamara 98