108 I May, 



"Ova of L. favioolor, Ju\y lUli, 1903.— * * * The eggs wore thrust 

 beneath the flakes of wood that had been raised in the lower surface of the lids of 

 tlie chip boxes in which they were laid, in small masses. Tliey are practically 

 sliapeless, mere transparent skins surrounding the young larva, which can be dis- 

 tinctly seen moving its head and mandibles. I fnund that it was impossible to 

 detach a sirgle egg witliout rupturing it, so I could only judge of the size in com- 

 parison with a scale instead of actually measuring one. As near as I could judge 

 they were between 4 and 5 mm. in diameter, and are probably nearly circular when 

 laid; now, however, tliey are much wrinkled and shrunken, taking the impression 

 of the surfaces between which Ihey liave been forced, but those portions that have 

 not come in contact with the sides of the crevice, or another egg, are covered with 

 a delicate but sharply cut cell pattern. 



{To be continued). 



LIST OF BRITISH DOLICROPODIDJL, WITH TABLES AND NOTES 



BY G. H. VEEBALL, F.E.S. 



{Continued from page 83). 



T. sp.? : Col. Terburj caught three males and two females of a 

 Thrypticus at Nairn earl}' in July, 190i, which are certainly distinct 

 from T. hellus, as they are very much larger, being in fact as large as 

 Medeterus truncarum. Their size also prevents their being T. smaraq- 

 dinus Gerst., while T. divisus Strobl. is now considered only a synonym 

 of T. hellus ; as however I have doubts as to the correctness of this 

 synonymy, I do not venture at the present time to give a name to the 

 Nairn species. 



The genus Thri-pticus may be easily distinguished from greenish 

 Medeterus by the parallel cubital and discal veins. 



19. RHAPSIUM Meig. 

 B. longlcorne Fall. : I have taken this very distinct species in the 

 New Forest not uncommonly, and also at Frant (in Sussex or Kent), 

 while in Scotland it has occurred freely in Arran and at Kannoch. 



20. MACH^RIUM Hal. 

 M. maritimce Hal. : a very widely distributed and common sea- 

 coast species, distinguished by its brilliant pale green colour and by 

 its long peculiarly shaped antennae. 



21. PORPHYROPS Meig. 

 Although we have at least fourteen well distinguished species of 

 this genus in Britain, only one (P. spinicoxa) can be considered at all 

 common. 



