23^ [November, 



Nematus monticola, Thorns., Hymen. Scand., i, 147, 77. I have 

 taken this seemingly rare species in Clydesdale. 



Nematus Marshalli, Cam., Ent. Mo. Mag., xii, p. 9. This species 

 is most closely related to iV. myosotides, Fab., but may be known from 

 that common species by its body being shorter, and broader compared 

 to its length, the antennae are distinctly longer than the body, the ab- 

 domen is not much longer than the head and thorax and only black at 

 the base, and the wings are much darker coloured. 



Here is a puzzle for those interested in antiquarian Entomology. 

 According to Thomson, pajypilosus, Hetz., is identical with N. myoso- 

 tides, Fab., but that determination cannot be correct, for the latter 

 feeds on clover, while papjyilosics is a willow feeder of totally different 

 habits and coloration. The description of the larva agrees very well 

 with iV. pavidus, Lep., sec. Zad., but I cannot make the description of 

 the imago fit very well with the latter, unless it is the ^ that De Geer 

 describes. 



Nematus belhis, Br. & Zad., I. c, pi. 6, fig. 13 (I87G) ; Andre, 

 Species d. Hymen., i, p. 155 (1880), = N. haccarum, Cam., Ent. Mo. 

 Mag., xi, p. 189, January, 1876. Brischke and Zaddach only figured 

 the larva and gall, and I was only made aware of the identity of the 

 two when I received types this year from Herr Brischke. The imago 

 was first described by Andre I. c. 



I have, during the last year or two, been re-investigating the gall- 

 making Nemafi, and have come to the conclusion that there are only 

 three good species which form round berry-shaped galls on willows, 

 namely, viminalis, Lin., sec. Vollenhoven ; haccarum, Cam., = hellus, 

 Br. & Zad. ; and herlacece, Cam. This determination only refers to 

 the species of which the habits are known ; for it is quite possible 

 that some of the species described by Thomson, and whose habits are 

 still unknown, may also form round galls on willows. 



It is very much to be wished that the Revision so well commenced 

 by Brischke and Zaddach of the Pala^arctic Nemati would be com- 

 pleted ; but a revision, to be of any real value, would require to 

 be based on collections from different parts of Europe, and es- 

 pecially on type specimens. These insects are so closely allied, that 

 determinations made from many of the descriptions are pretty much 

 guess work. Forster's species especially, notwithstanding the length 

 of his descriptions, are very difiicult to make out ; and as most of 

 them are founded on males alone, cannot be identified without an ex- 

 amination of his types. 



