150 THE ENTOMOLOGIST. 



Tenthredinid. A female of the present species -var. himaculatus, 

 Wesm. — emerged between midnight and 10.30 a.m. on June 10th. 

 A second female of the same variety emerged on Oct. 11th, 1899, 

 from its cocoon. The latter had emerged from the body of a 

 larva of Bombijx riibi when I received it on 21st of the preceding 

 month from Rev. C. D. Ash, who took it at Selby, in Yorks. In 

 both these cases the cocoon had no " swing-rope," but were, as 

 in Wesmael's case, in confined quarters, which may, as suggested 

 by Marshall, have accounted for the omission. 



25. filator. — Tostock, in Suffolk, in late September (Tuck) ; 

 Shere (Capron) ; New Forest (Miss Chawner). I have only met 

 with females in quite late autumn, by beating Picea excelsa at 

 the end of October, and once (November 2nd, 1902) I took two 

 from quite inside a dead rabbit. It is said to affect fungi, which 

 is known to often attract carrion beetles. In June, 1907, 1 swept 

 a very large male of this species at Matley Bog, in the New 

 Forest. 



26. cinctellus. — Three ferruginous males in my collection 

 can, I think, be nothing but this species or M. decoloratus, of 

 which a unique German female is alone known ; they were taken 

 by Thornley at Scotton Common, in Lincolnshire ; bred by Miss 

 Chawner in the New Forest, from a cocoon like, but smaller 

 than, that of M. versicolor ; and swept by myself from rough 

 grass in Wicken Fen, June 11th, 1902. They are, however, very 

 untypical. 



27. tenellus. — I swept a single female of this distinct species 

 at Shalfleet, in the Isle of Wight, at the end of last June. 



28. ruhens. — Piffard has given me specimens of both sexes 

 from the coast sandhills at Felixstowe, in Suffolk, and Beaumont 

 took a male in a similar situation at Kilmore, in Ireland, in 

 August, 1898. It is a gregarious parasite of Agrotis vestigi- 

 alis, &c. 



29. IcBviventris. — Females of this small species have been 

 bred by Miss Chawner in the New Forest. The cocoon is 

 cylindrical, dirty white, much more woolly at the anal half, and 

 only 3^ mm. in length. 



30. fragilis. — This species, as I understand it, almost exactly 

 resembles M. punctiventris, but with no tracheal grooves on the 

 post-petiole. It is not uncommon. I have found it at Tudden- 

 ham Fen, Halesworth, Needham, Ipswich, and Moultou, in 

 Suffolk, from May 15th to September 26th ; and W. Saunders 

 also took it at Greenings, in Surrey. 



I shall at all times be most grateful for bred hymenopterous 

 parasites, which I fear lepidopterists do not by any means value 

 at their true scientific worth ; this is quite as great as that of the 

 hosts whence they emerge. 



Monks Soham House, Suffolk : March 25th, 1908. 



