150 THE ENTOMOLOGIST. 



Tenthredinid. A female of the present species — var. bimacidatus, 

 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 Bombi/x rubi when I received it on 21st of the preceding 

 month from Eev. 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 FeHxstowe, 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. Iceviventris. — 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 Sg- 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 Moulton, 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. 



