Another typical hothouse form of wide distribution ; there is a 

 single carded specimen in the British Museum, taken by Mr. C. O. 

 VVaterhouse at Acton. I would here take this opportunity of expres- 

 sing my gratitude to him for his kindness in allowing me to examine 

 this and many more interesting species of Thrips. 



Distribution. Vienna (Heeger and von Frauenfeld), Finland 

 (Reuter), Bohemia (Uzel), St. Petersburg (Regel), Germany (Jordan 

 and Bohls) and North America (Pergande and Hinds).* 



Thrips communis, TJzel. 



Thrips communis, Uzel, Hon. der Ordn. Thysanoptera, p. 176, pi. vi, fig. 100, 

 1895. 



I have beaten a large number of this small insect from the bitter- 

 sweet (Solatium dulcamara) and potato plant (Solatium tuberosum), 

 Shalwell, Hart, and Blaydon, Co. Durham. This and the following 

 species are apparently attached to the leaves and flowers of the 

 So lanacece. 



Distribution. Bohemia (Uzel). 



Thrips major, Uzel. 

 Thrips major, Uzel, Mon. der Ordn. Thysanoptera, p. 179, 1895. 



Taken in company with, and in the same localities as, T. communis, 

 also at Hay don Bridge, Northumberland, October. 



Distribution. Bohemia (Uzel). 



It must be acknowledged that there is some considerable difliculty 

 in the identification of the species of certain genera, notably Thrips 

 sensu strictu and Eitthrips (Physopus). I have gone very carefully 

 into the identification of the species herein noted and not only do 

 they agree (so far as I may be allowed to judge) with Uzel's pub- 

 lished descriptions, but the habitats of the different forms are 

 identical. 



Prof. Uzel has very generously promised me co-types of a num- 

 ber of his species, which will be invaluable in the working out of my 

 own captures, as well as in settling the determination of some of 

 Holiday's species which (owing to meagre descriptions) have not as 

 yet been satisfactorily classified. 



The Groves, Winlaton-on-Tyne : 

 November 20th, 1907. 



* In November of this year (1907) I discovered both H. fenwralit, Rent., and P. dracana: 

 Heeger, in large numbers in Brussels and Antwerp, Belgium.— R. S. B. 



