REVIEWS. 85 



had learnt a few elementary lessons in arithmetic. A little ordinary care 

 would have prevented such oversights as this, which impart an appearance 

 of haste and slovenliness, by no means advantageous to such a work as the 

 present professes to be. 



As for the plates, we do not, on the whole, think them an advance on 

 the prior edition; they are sometimes harshly executed, though these are 

 the exceptions, and occasionally they even have the advantage of their pre- 

 decessors. The desire of economizing both space and price has sometimes, 

 also, we think, carried the author too far e.g., so fine and striking an 

 insect as Aporia cratsegi, and such a rarity as P. daplidice, deserve 

 more than a half-view of the under side (which is all we are favoured 

 with), especially while we have full-sized portraits of much commoner and 

 in no way striking insects, as Pieris Brassicse, &c. On the other hand, 

 we have several interesting figures of gynandromorphous specimens, parti- 

 cularly a most remarkable one of Argynnis paphia, which mingles not only 

 the male and female characters, but those, also, of the type and the 

 variety. Such figures add greatly to the interest of the work. 



Although, therefore, taken as a whole, this book is but a re-issue, it 

 presents many of the features and possesses many of the advantages of a 

 new work; and, in spite of sundry incidental defects, it may be considered 

 as representing the latest, most matured, and, therefore, most valuable 

 opinions of a man than whom few could be found more competent to dis- 

 charge the office which he has here undertaken, and, we doubt not, it will 

 be appreciated accordingly. 



In taking leave we would suggest to Mr. Westwood that he would 

 confer a great benefit on British entomologists if he would subject the 

 remaining volumes of the original work viz., British Moths and their 

 Transformations to the same process of revision and re- issue through 

 which the butterflies have passed. He would find much more to do in 

 that field, of which our knowledge has increased more rapidly, because, 

 probably, there was more to be known consequently, more changes have 

 taken place, and a more complete work than we, as yet, possess, is some- 

 what imperatively called for. We sincerely hope that the success of his 

 recent labours will be such as to encourage him to go through with the 

 re-issue, and that speedily. 



