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 INSECTS SELIDOSEMIDJE (continued) Oxhey (H. Rowland-Brown) ; Tring (Elliman) ; Burton Grange, Cheshunt (Boyd) Fairly common and one of the earliest arrivals at 'light.' Mr. Spencer notes slight variations as to colour Gonodontis elinguaria, L. St. Album (A. E. G.) ; Sandridge (Griffith) ; Hitchin (Durrant) ; Hai/eybury (Bowyer); East Barnet (Gillum) ; Busbey (Cults) ; Watford (Spencer, Heaton, Wigg) ; Bushey Heath (Barraud) ; Oxhey (H. Rowland-Brown) ; Hemel Hempstead (B. Piffard) ; Tring (Elliman) ; Bishop Stanford (Mellows, Taylor) ; Cheshunt (Boyd) Generally common throughout the county PoLYPLOCIDj-E Habrosyne derasa, L. St. Albans and Bricket Wood (A. E. G.) ; Sparrows- wick, St. Albans (A. Lewis) ; Hitchin (Durrant) ; Haileybury (Bowyer) ; Hertford (Stephens) ; East Barnet (Gillum) ; Watford (Spencer, Wigg) ; Bushey Heath (Barraud) ; Stevenage (Matthews) ; Bishop Stortford (Tay- lor, Mellows) ; Cheshunt (Boyd) Tolerably common in some locali- ties in certain years Thyatira batis, L. Bricket Wood, Radlett and Cassiobury Park (A. E. G.) ; Knebworth (Durrant) ; Haileybury (Bowyer) ; East Barnet (Gillum) ; Oxhey Wood (Cutts) ; Watford (Spen- cer, Wigg) ; Bushey Heath (Barraud); Wilstone reservoir (Elliman, Le Quesne) ; Gryme's Ditch (Foulkes) Sometimes comes freely to ' sugar.' The Rev. H. Harpur Crewe reared ' two from larvas on raspberry, July, Herts ' (Zoologist, xi. 4,037) Palimpsestis duplaris, L. Brictet Wood (Cottam, A. E. G.) ; Hitchin (Dur- rant) ; Watford (Cottam) Rare or, F. Bricket Wood (Cottam, A..~E.G.y, Hemel Hempstead (A. E. G.) ; Sand- ridge (Griffith); Knebworth (Durrant) ; Haileybury (Bowyer) ; Hastoe (Elli- man) Two specimens have been taken at Haileybury. Rev. H. Harpur Crewe reared ' one from a larva beaten off oak in July, Herts ' (Zoologist, xi. 4,037) Polyploca diluta, F. Bricket Wood (Cot- tam, A. E. G.) ; Sandridge (Grif- fith) ; Knebworth (Durrant) ; Hailey- POLYPLOCID^: (continued) bury (Bowyer) ; Oxhey Wood (Cutts); Watford (Cottam, Spencer, Wigg) Common at ' sugar ' at Haileybury Polyploca flavicornis, L. Bricket Wood (Spencer) Mr. Spencer found the larva of this moth on a young birch tree at Bricket Wood on May 1 6th, 1896, and the perfect insect emerged dur- ing the following March ridens, F. St. Albans (A. Lewis) ; Haileybury (Bowyer) ; Theobald's and Broxbourne Woods (Boyd) Recorded in the Haileybury School List as taken at ' light,' but not com- mon. Mr. Stockley informs me that it has not been taken lately. It is scarce in Mr. Boyd's neighbourhood. The Rev. H. Harpur Crewe reared ' one from a larva beaten off oak in July, Herts ' (Zoologist, xi. 4,037) SPHINGID.S: Hemaris bombyliformis, Esp. Sandridge (Griffith) fuciformis, L. Haileybury (Bowyer), 'once on Heath,' School List ; Worm- ley (Warner) ; Broxbourne Woods (Boyd) ; Tring (Le Quesne) The Tring specimen is reported by Mr. Elliman to have been taken in the larval state on honeysuckle by Mr. Le Quesne Macroglossa stellatarum, L. St. Albans (A. E. G.) ; Sandridge (Griffith) ; Colney Heath (Pilbrow) ; Hitchin (Durrant) ; Haileybury (Bowyer) ; Hertford (Stephens) ; Southgate (Dymond) ; East Barnet (Gillum) ; Watford (Spencer, Heaton) ; Tring (Hon. L. Walter Rothschild, Elli- man) ; Bishop Stortford (Taylor) ; Bushey Heath (Barraud) ; Stevenage (Matthews) ; Cheshunt (Boyd) ; Roy- ston (A. H. Kingston) This species sometimes occurs in great profusion. This was especially the case in 1893 (vide Transactions of the Hertfordshire Natural History Society, viii. 80). A correspondent reported that at the harvest festival at Colney Heath Church in that year dozens of these insects were attracted by the floral decorations, and their ' humming ' was very noticeable Deilephila porcellus, L. Sandridge (Grif- fith) ; Hitchin (Durrant) ; Haileybury (Bowyer) ; East Barnet (Gillum) ; Watford (Spencer) ; Bushey Heath (Barraud) ; Aldbury Downs (Hon. L. 143