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Distribution. — England and Ircland (R. S. ?>.). Belgium, on 

 Orchids in a propagaling liouse at Ihe Erussels Botanical Gardeiis, 

 Jidy 1908, and a single spécimen from Chamcvodorea fragraus, 

 December 1907. 



Genus LEUCOTHRIPS Rkuter, 1904 



2. — Leucothrips nigripennis Reuter, liMVi. 



Leucothrips nigripennis (Reuter) | 7|. 



A small and very distinct species described by Prof. Reuter 

 from Ihe hot-house Ferns Pteris serrulata, P. cretica major and P. 

 Vincetii. Although I had repeatedly searched for Leucothrips, it 

 was only in October 1908 that I first had the pleasure of tlnding it, 

 when it occured to me in numbers on Davallia, a genus of Fern 

 allied to Pteris, at the Brussels Botanical Gardens. 



Distribution. — Finland (Reuter). Belgium, common on 

 Davallia, in the large Fern House at the Brussels Botanical 

 Gardens, October 2nd. 1908. 



Genus EUTHRIPS Targioni-Tozzetti 



3. — Euthrips orchidii (Moulton), 1907. 



Euthrips orchidii (Moulton) [5], p. 52, pi. II, fig. 15-18. 



This small and pretty species has only recently been described by 

 Mr. DuDLEY Moulton from four spécimens coUected by Mr. 0. E. 

 Bremner, from Orchids in a greenhouse at Fruitvale, Alameda 

 County, California, U. S. A. 



In March and June, 1908, I found single spécimens on Chanur- 

 odorea fragrans in the large Palm House, Brussels Botanical Gardens, 

 and in October of the same year I was fortunate enough to find a 

 colony of it on a species of Ficaria,\\h\ch was in close proximity to 

 the C. fragrans, as well as several exainples from -varions kinds of 

 Palms. The maie and the eaiiier stages of E. orchidii are as yet un- 

 known, but as I hâve now discovered the species in England I hope, 

 in the near future, to describe the larval and pupal stages at least. 



E. orchidii is a small species (0.8 mm. to 0.9 mm.) and about 

 four times as long as the breadth of the mesothorax. The gênerai 

 color is lemon-yellow, with the antennae and legs lighter. The wings 

 do not reach to the tip of abdomen; the upper pair are brown in 

 color, with two liglit areas, one at tip and the other near base. Ali 



