170 Proceedings of the Biological Society of Washington. 



Armillaria sp., and Clitocybe sp., Great Falls, Va., Sept. 8, Oct. 9, (C. H. 

 Popenoe). (Alexander Mem. 38.) harvae in Boletus felleus, Bradley 

 Hills, Md., (Alexander, Mem. 38). 

 Ula elegans O. S. Larva in Fomes sp., Gloversville, N. Y., Sept. 15 

 (Alexander, Mem. 38). Alexander also mentions two European species 

 of Limnobia and one European species of Ula as occurring in polypores 

 and agarics in Europe. 



Order Thysanura. 



Papirius pini Folsom. Feeding on s])ores of Amanatopsis vaginata, 

 Lactarius sp., and Russula sp., Monmouth Jc, N. J., July 26. 



Achorutes armatus Nic. Feeding on spores of Russula crustosa, Mon- 

 mouth Jc, N. J., August 6. 



Order Thysanoptera. 



Trichothrips ulmi Fab. Found during summer and winter in many parts 

 of New Jersey, under bark of decayed trees an'd in and on various poly- 

 pores such as Polyporus versicolor, P. gilvus, P. beiulinus, P. hirsutus, 

 Lenzites betulina and Fomes applanatus. At Monmouth Junction, N. J., 

 July 21, various stages were observed feeding on the ends of the tubes 

 of Fomes lobatus. They were feeding in groups and had kept the tubes 

 from growing. The surrounding tubes which had not been eaten grew 

 normally and this resulted in slight depressions wherever the insects 

 had congregated and fed for any length of time. At the same place 

 on July 21, specimens were observed feeding on the mycelial filaments on 

 the upper surface of young sporophores of Stereum fasciatum. 



ACARINA. 



Family Oribatidae. 



Galumna depressa Banks. In Hydnum sp., Monmouth Jc, N. J., July 21. 

 Carabodes nigra Banks. In Hydnum sp., Monmouth Jc, N. J., July 21. 



Family Tyroglyphidae. 



Tyroglyphus lintneri Osborn. Attacking mushrooms, Jamesport, L. I., 

 N. Y. (Lintner, 48th Rept. N. Y. St. Mus. p. 392). In this report 

 mention is made of Rhizoglyphus rostroserratus being destructive to 

 Agaricus campestris grown in the vicinity of Paris, France. 



Tyroglyphus heteromorphus Felt. Observed feeding on a black smutty 

 fungus which developed upon decaying carnation roots. Black spores 

 were observed within their semitransparent bodies (Felt, 11th Rept. 

 N. Y., 1896, p. 254). 

 Dr. Nathan Banks writes that there are a great many species of Oribatidae 



and a number live in fungi, the Carabodes usually in hard fungi. 



We are indebted to Dr. Nathan Banks for identifying the Oribatidae, 



to Mr. C. A. Frost for miscellaneous indentifications in the Coleoptera, to 



Mr. Chas. Dury for his help with the Cisidae, to Mr. Chas. Macnamara 



for determining the springtails and to Mr. A. C. Morgan who identified 



Trichothrips ulmi Fabr. 



