A HISTORY OF HERTFORDSHIRE PlERID.ffi (continued) C. hyale in the county (Transactions Hertfordshire Natural History Society, vii. 1 88 and viii. 77). During the past year, 1900, it has again oc- curred in some profusion. Among the records for that year are those of the Hon. L. Walter Rothschild, M.P., who writes : ' This autumn I have taken several Colias hyale within the county limits, though my brother and I and the Museum staff captured the bulk of some fifty we took nearer Halton, on the Bucks side of the border.' The same observer reports that C. edusa was taken near Tring windmill, and that Mr. A. T. Goodson captured a specimen of var. helice. Mr. A. Cottam's observations printed above were also made during the past season. Both species were fairly abundant at New Farm near St. Albany C. hyale being perhaps the commoner, as seems to have been the case throughout the county. I observed C. edusa flying in St. Peter's Street in September Gonepteryx rhamni, L. St. Albans, Bricket Wood and Els tree (A. E. G.) ; Sand- ridge (Griffith) ; Hitchin (Durrant) ; Haileybury (Bowyer) ; Throcking (Rev. C. W. Harvey) ; East Barnet (Gillum) ; Watford (Heaton, Wigg); Tring (Elliman) ; Bushey Heath (Bar- raud) ; Stevenage (Matthews) ; Cheshunt (Boyd) ; Rickmansworth and Oxhey (H. Rowland-Brown) ; Royston (A. H. Kingston) Euchloe cardamines, L. St. Albans, Bricket Wood, Harpenden Common and Brocket Hall (A. E. G.) ; Sandridge (Grif- fith) ; Haileybury (Bowyer) ; Hitchin (Durrant) ; Hertford (Silvester) ; Watford (Spencer, Heaton, Wigg) ; Tring (Elliman) ; Bushey Heath (Bar- raud) ; Stevenage (Matthews) ; Ches- hunt (Boyd) ; Bishop Stortford (Mel- lows) ; south and west Herts, gener- ally distributed (H. Rowland- Brown) Leucophasia sinapis, L. Haileybury (Bow- yer) ; Bishop Stortford (Mellows) The latter correspondent writes : ' I took one in the grounds of the Nonconformist Grammar School in 1894, but know of no others having been taken there ' Pieris napi, L. Common throughout the county PIERID.S (continued) Pieris rapae, L. Common throughout the county brassicas, L. Common throughout the county Mr. Elliman observes that P. brassicae occurs more especially near the woods in the Tring district Aporia crataegi, L. One specimen of this insect is recorded in the School List as having been captured at Hailey- bury HESPERIAD^: Hesperia malvae, L. (alveolus, Hb.). St. Albans, Shenley, Bricket Wood and Brocket Hall (A. E. G.) ; Hemel Hempstead (B. Piffard) ; Sandridge (Griffith) ; Knebworth (Durrant) ; Haileybury (Bowyer) ; Hertford, Ben- geo and Brickendon (Stephens) ; East Barnet (Gillum) ; Watford (Spencer, Heaton, Wigg) ; Tring (Elliman) ; Dancer's End and between Aldbury and Ivinghoe (Hon. L. Walter Roths- child) ; Broxbourne Woods (Boyd) ; Oxhey (H. Rowland-Brown) Mr. Elliman reports this species to be common in the Tring district, but more local than H. tages tages, L. Bricket Wood, Aldbury and Shenley (A. E. G.) ; Sandridge (Grif- fith) ; Hitchin (Durrant) ; Haileybury (Bowyer) ; Hertford (Stephens) ; East Barnet (Gillum) ; Watford (Spencer, Heaton, Wigg) ; Tring (Elliman) ; Dancer's End (Hon. L. Walter Roth- schild) ; Norton Green Woods (Mat- thews) ; Broxbourne Woods (Boyd) ; Oxhey (H. Rowland-Brown) Pamphila thaumas, Hufn. (linea, L.). Sand- ridge (Griffith) ; Hitchin (Durrant) ; Haileybury (Bowyer) ; Hertford (Stephens) ; East Barnet (Gillum) ; Grove Wood, Tring (Elliman) sylvanus, Esp. Bricket Wood and Shenley (A. E. G.) ; Sandridge (Grif- fith) ; Hitchin (Durrant) ; Haileybury (Bowyer) ; Hertford (Stephens) ; East Barnet (Gillum) ; Watford (Spencer, Heaton, Wigg) ; Aldbury (Cottam) ; Tring (Elliman) ; Norton Green Woods (Matthews) ; Oxhey (H. Rowland-Brown) comma, L. Roman road, Haileybury (Stockley) ; Berkhamsted Common, one specimen (G. H. Raynor, New- man's Illustrated Natural History of British Butter/lies and Moths, 173); Aldbury Downs (Hon. L. Walter Rothschild, Elliman, Cottam) ; 152