]72 [August, 



than in vestalis. The yellow thoracic band is never reduced by melanism 

 as it often is in vestalis. 



Ps. disthictus lias been talcen by the Eev. F. D. Morice at Rugby, 

 and by myself at Colinton, near Edinburo-h. The specimens figured 

 were bred at Dover in a nest of Bumhua Ivcormn from a female sent me 

 by Mr. H. L. Orr from the neighbourhood of Belfast. Ps. disthictus 

 is probalily a fairly common insect in many places in the north of 

 England, in Scotland, and the north of Ireland, and it is probably 

 parasitic on Bomhus lucornm, which it resembles in the quality and 

 yellow tint of the coat. I have taken only one specimen, a giant male, 

 at Dover. Ps. vestalis, on the other hand, is parasitic on B. terrestris 

 and resembles the latter in the quality and yellow tint of the coat, and 

 seems to be abundant in the south and east of England, and to 

 disappear altogether in the north. — F. W. L. S. 



Fig. 3. — Trich'thrijjs longisefis, Bagnall ( x 20, drawn from the 

 unique specimen [type] mounted in balsani). 



The smallest British species of Trichothrips, which in the form of 

 its mouth " cone " occupies with T. ciespitis, Uzel, a main division of 

 the genus that may ultimately be treated as distinct. 



The single specimen was tahen in moss, Gibside, Co. Durham. 

 Another species allied to the polyporus-feeding T. j^edicularis, viz., 

 T. pro])inquus, Bagn., from the Derwent Valley, was described in 

 the same paper.* Further examples of T. propinquvs have been 

 taken l:)oth in the Derwent Valley and in a wood near Edinburgh, 

 occurring under Cortieium growing on old beeches. It has not been 

 foundin Pohjstictus versicolor, which is the polyporus usually frequented 

 by T. pedicidarius. — E. S. B. 



Figs. 4, 5. — Megathrips nohilis, Bagnall (4(^, 5 $ , x 12. Drawn 

 from brachypterous carded specimens) . This species was described in 



1909 (Ent. Mo. Mag., XLV, pp. 130, 131) from brachypterous speci- 

 mens of both sexes taken by Dr. Sharp in April and May, 1896, in 

 dried sedge refuse, Wicken Fen, together with its larva), and also with 

 larvae and imagines of a recently recorded British species, Cryptothrips 

 dentipes. Rent. The macropterous female of M. nohUis was taken in 



1910 by Mr. Donisthorpe, whilst Mr. C. B. Williams, who is studying 

 the group, last year found this species in the same habitat together 

 with a distinct and interesting new Enthrips (AnapTiothrips). 



This year it has been sent me by Mr. C. J. C. Pool from the 

 same locality. 



* Tran.s. Nut. Hist. Soc. Nd. and Dliain, n.s. iii, pt. 3, December 1910. 



