FIELD NOTES ON BKITISH SAWFLIES. 173 



ance with it is confined to the field, and that it is to Mr. Morice's 

 kindness and to that of Rev. E. N. Bloomfield and Miss Chawner 

 that I owe the identification of all my specimens. 



The Lydidae are divided into three subfamilies — the Lydini, 

 Cephini, and Xyelini (for which the suffices -ides, as in the 

 Tenfchredinidffi s.s., would be more uniform) — and all the species 

 of the first division appear to be of uncommon occurrence. The 

 late Mr. Alfred Beaumont has given me a single Neurotoma Jlavi- 

 ventris, labelled "York, Hawkins, 1893," and on June 3rd, 1898, 

 I beat from white poplar in Bentley Woods, near Ipswich, the 

 only two females of Pamphilus sylvarum I have ever seen, though 

 the same spot was constantly worked from 1892 to late in 1904. 

 Beaumont also gave me P. balteatus and P. hortorum, both of 

 which he captured at Gosfield, in Essex, in June, 1902 ; and the 

 late Mr. A. J. Chitty took P. depressus at Pamber Forest at the 

 beginning of June, 1904. I have, in like manner, once in 1894 

 taken two P. sylvaticus in the Bentley Woods, but never seen it 

 there again. The Cephini, as a whole, are much commoner, and 

 I have them all. Macrocephus linearis has thrice occurred to me 

 at Eockland and Surlingham Broads, in Norfolk, by sweeping 

 the marsh herbage in very boggy places, and in a high dry pas- 

 ture on an oxeye daisy to the east of Yarmouth, in the Isle of 

 Wight, in June ; my single M. satyrus was captured by Beaumont 

 at Lyndhurst, in the New Forest, June 5th, 1897. Of Cephus, 

 C. pallidipes is, perhaps, the rarest, or at least most local ; in 

 Suffolk it has only occurred to me from June 17th to July 5th, 

 at Barnby Broad, Henstead, Tuddenham Fen, and Moulton, but 

 in the middle of last June I found it in countless multitudes on 

 the Eed Cliff at Sandown, as well as at Yarmouth, Parkhurst ; 

 and, in the New Forest, at Matley Bog. C. pygmmis, with its 

 curious parasite Collyria calcitrator, Grav., is abundant about 

 cornfields everywhere from the end of May to September 24th, 

 though C. pilosulus, which is much mixed with it, is confined, in 

 my experience, to June, and is much less common. Janus 

 cynosbati was captured at Brandon, in Suffolk, by Chitty early in 

 June, 1903, and Beaumont took Calavieuta filiformis at Oxshott 

 on May 23rd, 1897. The distinct Tracheitis tahidiis I have 

 always found on the flowers of Heracleum sphondylium in June 

 and July ; it was especially common at Moulton in 1899, and 

 has also turned up at Boxford, Claydon, and Bentley Woods, 

 where I have thrice beaten the rare Xyela julii from the branches 

 of Pinus sylvestris between April 9th and May 11th. Beaumont 

 records it from Oxshott on May 3rd (Ent. Mo. Mag. 1897, 

 p. 257). 



Of our five species of Siricidse — or should I say six ? [cf. Ent. 

 Record, 1908, p. 63) — Xiphydria prolongata has once occurred to 

 me in plenty at Mildenhall, in Suffolk {cf. Ent. Mo. Mag. 1899, 

 p. 190), and both Sirex gigas and S. noctilio {juvencus, Brit. Cat.) 



