REVIEWS. 219 



Imperfect exclusion. — Mr. Donisthorpe exhibited a specimen of 

 Argynnis eupfwasyne carrying a portion of the pupa case. Some dis- 

 cussion arose as to the effect of damage to antenna? on the flight of 

 butterflies. 



Eversible glands in beetle larvae. — Dr. Gahan exhibited examples 

 of the larva? of Pkytodecta viminalis, and called attention to the exist- 

 ence in these larvas of eversible glandular structures between the 

 seventh and eighth dorsal segments. Comments were made by Mr. C. 

 B. Williams, who said that he found P. viminalis to be viviparous. 



Biological points in some Hymenoptera. — Mr. Morice exhibited (1) 

 examples of Anthopliora pilipes, of which he had seen no 2 s, and 

 described attempts made by the $ to pair with Js of the Humble 

 Bee ; (2) a $ sawfly, Tenthredopsis palmata, Geoffr., with an abnormal 

 wing neuration, apparently a reversion to a primitive type. 



Exotic Lepidoptera shown. —Mr. Talbot, on behalf of Mr. J. J. 

 Joicey, exhibited examples of Heliconius from Venezuela. Dr. Dixey 

 exhibited Pierince from Central Peru. Comments were made by the 

 President, Prof. Poulton, and Mr. Kosenberg. 



Papers. — Two papers were read (1) by Mr. Donisthorpe on 

 * l Mimicry of Ants by other Arthropods," and the author exhibited a 

 number of examples to illustrate this : comment was made by Prof. 

 Poulton ; (2) by Mr. G. Arrow on " Erotylid Coleoptera." 



Mid-month Meeting. — It was decided not to hold the informal 

 ■meeting arranged for June 15th. 



J^EYIEWS AND NOTICES OF BOOKS. 



Insect Transformations. By George H. Carpenter, D.Sc. 282 

 pages. With 24 plates and 124 other illustrations. Methuen and Co., 

 Ltd. Price 12s. 6d. — Some twenty years ago Prof. Carpenter wrote a 

 work entitled, " Insects ; their structure and Life," the purport of 

 which was more aptly expressed by its secondary title, " A Primer of 

 Entomology." It was a concise outline of the whole subject of the 

 study of insects. The volume before us is an intensive presentation 

 of what was only touched upon in an outline then, viz., " Insect 

 Transformations." 



So much life history matter has been discovered during the past 

 two decades that our author found it a difficult task, he tells us, to give 

 a balanced consideration of both old and new facts adequately to be of 

 service equally to beginners as to older students. This object however 

 he has admirably attained and we feel quite sure that those who read 

 and re-read his previous volume will, as we shall, read and re-read the 

 present work with pleasure and profit. 



Prof. Carpenter begins his task with the detailed study of a few 

 fully developed insects of different types, the grasshopper, the dragon- 

 fly, the butterfly, so that the purpose of the structure and habits of 

 the immature creature may the better be understood " in the light of 

 what is to be the end of its life-history." This chapter is headed 

 " Form, Growth and Change." 



The next two chapters deal with the earlier stages of insects 

 having the titles, 1 " The Open Type of Wing-growth," and 2 " The 

 Hidden Type of Wing-growth," and take up nearly a hundred pages. 

 In the former the immature stages all have " outward and visible wing 



