March, 1919.] REVIEW. 



Masarix.e and Euparaginje) According to Dr. Bequaekt. 



107 



The author describes an elaborate mite-chamber at the base of 

 the second dorsal segment of Nortonia bisuturalis, and in connection 

 therewith he gives an account of mite-chambers in Hymenoptera in 

 general, recounting amongst others, two or three North American 

 species in which he has observed them. 



Numerous excellent text-figures of anatomical parts, by the au- 

 thor, and maps of distribution add to the value of the work. 



