174 THE ENTOMOLOGIST. 



are not uncommon, especially in 1898 {cf. Ent. Mo. Mag. 1898, 

 p, 213). Both the latter species are now known to be indubit- 

 ably indigenous, and both are preyed upon by the handsome 

 ichneumon Rhyssa persnasoria, Linn., several females of which 

 were flying round holes whence I cut both sexes of S. gigas in 

 fir-poles at Horning Ferry, in the Norfolk Broads, in June, 1901. 

 Several species of this family are, however, introduced. Leonard 

 Jenyns took Sirex duplex, Shuck, {cceruleiis, Fab.) commonly 

 among spruce-firs at Fulbourne in June and July, 1837, and 

 Mr. Eobert Godfrey sent me on June 22nd, 1907, a live male of 

 Tremex coliimba, Linn., three of which had just emerged from a 

 several -year-used maple beam in Glengowan Print Works, which 

 had constantly been in boiling starch at a temperature of 

 70° Fahr. I possess S. noctilio from Leamington and Westgate- 

 on-Sea. 



I have met with but a small percentage of the Cimbicidse, 

 and have given a detailed account of Cimbex connata, with a 

 mention of the subterranean pupation of C.femorata (Ent. Mo. 

 Mag. 1905, p. 214). I possess three species of the involved genus 

 Trichiosoma, of which one — the common hawthorn species, T. 

 liLcorum, Linn., I believe it to be — has the abdomen quite dull 

 throughout, with distinctly brown pilosity, and the other two 

 somewhat metallic abdomens, with distinctly grey pilosity, with 

 or without rufescent markings. Those with the upper margins 

 and whole under side of the abdomen red are T. silvatica of 

 Mr. Morice's table, and that without such markings is un- 

 doubtedly T. latreillei. Both of these seem rare ; I have but a 

 pair of the former from " larvae on birch in Scotland " (Peachell) 

 and "New Forest, 1892" (Gulliver), and only one of the latter, 

 which I beat from white poplar in the Bentley Woods, June 10th, 

 1895. I have given a long account of the parasitism of Spilo- 

 cryptus cimhicis on T. "oxyacanth(B," with a figure of the latter's 

 pupa ('British Ichneumons,' ii. 273), and pointed out that the 

 colour of the tibiae is purely sexual {cf. Ent. Mo. Mag. 1904, 

 p. 127). I first bred them from their powdery larvae at Epsom 

 College in 1889. The glorious Ahia sericea occurs in August at 

 Tuddenham Fen, Barnby Broad, and Henstead Marsh, in Suffolk, 

 and not rarely on flowers of Angelica sylvestris in Matley Bog, in 

 the New Forest, where A. fas data is then abundant; I have 

 found the latter also at Bentley Woods, and first took it at Help- 

 ston Heath, near Peterborough, in August, 1889. Arge seems 

 to be an uncommon genus ; I have only met with A. ustulata in 

 Suffolk and A. ccerulescens in the New Forest in any quantity. 

 Even A. cyanocrocea has occurred to me but twice — in 1894, and 

 on Chcerophyllum flower early in June, 1904 ; while a single 

 A.fuscipes was beaten from birch bushes in Assington Thicks, in 

 Suffolk, in the middle of May, 1902. A. rosce was not met with 

 till the end of August, 1905, when I found many larvae feeding 



