FIELD NOTES ON BRITISH SAWFLIES. 175 



on cultivated rose in the garden of Tuddenham Hall, which pro- 

 duced imagines from semi-transparent, pale yellow, ovate cocoons 

 during the following spring. Lopliyrus (probably) pini is said to 

 have been found on pine at Easton, in Suffolk, but I have never 

 seen it here. Miss Chawner has, however, kindly given me both 

 sexes from the New Forest, and I have also received its flesh- 

 coloured cocoon for identification from Ushaw Moor, near Durham 

 (it was mistaken for that of a moth!). 



Following Mr. Morice's nomenclature, the Nematides is the 

 first subfamily of the restricted Tenthredinidae, and many of its 

 species are very abundant. Cladius pectinicornis is by no means 

 uncommon here from the middle of May to the end of September, 

 when Mr. W. H. Tuck has taken it plentifully about Bury St. 

 Edmunds, but in the Isle of Wight, where it is even commoner, 

 it is abroad quite by the beginning of May. Imagines of 

 Trichiocampus viminaUs have never occurred to me in the field, 

 but their cocoons, composed of gnawed particles of wood and 

 enclosing a transparent pale brown inner layer, are common be- 

 neath willow-bark during the winter ; from three such, found on 

 March 3rd (and still containing larvae), on the under side of a 

 piece of fallen bark at Tattingstone, in Suffolk, there emerged a 

 pair between the 6th and 18th of the following June, and a 

 female on July 14th. From a similar though much flatter 

 cocoon (its shape is doubtless largely regulated by the " elbow- 

 room " at its grub's disposal), composed by a ** larva beaten from 

 oak " on October 20th, 1894, there emerged a female of this 

 species — which invariably feeds on willow — on 28th of the 

 following June! T. ulmi has only occurred to me singly at 

 Leiston, Tuddenham, Lowestoft, and Monks Soham ; while a 

 single T. dreivseni was found in a greenhouse at Ryde, Isle of 

 Wight, on August 11th, 1902. Priophorus padi is one of our 

 commonest species, and may be swept from herbage everywhere 

 from the end of May to that of September ; I have it from 

 Hants, Norfolk, and all parts of Suffolk; but P. tristis is much 

 rarer, and I have only two specimens, both taken early in 

 1895 at Bramford, near Ipswich, and the Bentley Woods, by 

 sweeping. 



Both species of Hemichroa are handsome insects, and neither 

 is common ; H. alni has occurred to me on birch in the Bentley 

 Woods on May 25th ; in a marsh at Rookley, in the Isle of Wight, 

 at the end of June ; and on flowers of Angelica sylvestris among 

 alders at Lackford Bridge, Suffolk, on August 26th. H. crocea 

 is not more abundant at Brandon on June 9th, 1903, and by 

 sweeping in a wood at Freston, near Ipswich, on July 22nd, 

 1904. At Matley Bog, in the New Forest, on June 13th, 1907, I 

 took a single female Leptocercus luridiventris. Dineura nigricans 

 is one of the commonest and prettiest sawflies of the Bentley 

 Woods and Assington Thicks in May and June, when it is 



