300 THE CANADIAN ENTOMOLOGIST. 



Toward the anterior the plates on the margin become broader and the 

 lateral fringing more marked. The rudimentary lobes appear to form the 

 bases of the plates. 



Marginal spines situated at the b.ise of each lobe and at intervals 

 between the squames. Semi-lunar pores opening in depressions between 

 the lobes. Dorsal pores rather numerous. 



Circumgenital glands in four groups, occasionally five. Anterior 

 laterals 10-14. Posterior laterals 9- r 2. Anterior group, when present, 

 1-2. Anal aperalure some distance below genital aperature. 



Adult male not known. 



Habitat : Abundant on bark of orange tree and on a cultivated vine. 



BOOK NOTICE. 



Bulletin 171. Ontario Agricultural College. 



A most compact and useful publication has just been issued by the 

 Ontario Department of Agriculture, as Bulletin 171, entitled, Insects 

 Affecting Vegetables, by Rev. Prof. Bethune, and Fungus Diseases Affect- 

 ing Vegetables, by Messrs, J. W. East ham and J. F. Howitt, of the Ontario 

 Agricultural College. 



Though the work consists of but 64 pages, including the index, the 

 grower of vegetables will readily find more information about his most 

 dreaded pests and the best means of combating them than in more pre- 

 tentious volumes. The first part, dealing with insects, begins by calling 

 attention to a number of kinds of general feeders, such as aphids, cut- 

 worms, grasshoppers, which attack almost anything that comes in their 

 way ; and then the various vegetables are treated of in alphabetical order, 

 with their special enemies. The attacks of fungus diseases often follow 

 in the wake of insect injuries, and these are referred to in a well-illustrated 

 chapter arranged in the same order as the insects, with treatment recom- 

 mended for each, but, as the authors say, 'Generally speaking, in combat- 

 ing fungus diseases, methods of prevention only are practicable, as once a 

 fungus is within a plant nothing can be done to destroy it." The remain- 

 ing chapters are devoted to Insecticides and Fungicides, how to manufac- 

 ture and apply them to the best advantage. 



The Bulletin should be read and preserved for ready reference by 

 everyone interested in the growing of vegetables. A. F. VV. 



Mailed August 9th, 



