The Migration and Dispersal of Insects. 



Demy 8vo ; 132 pp. Price 5/- net. 



This book, the only one published on this interesting subject, is of first importance 

 to all students of geographical distribution, and contains the following chapters: 

 1, General considerations. 2, Migration of Coccids and Aphides. 3, Orthoptera. 

 4, Odonata. 5, Lepidoptera. 6, Coleoptera. 7, Diptera. 8, Social insects — 

 Hymenoptera, Tei mites. 9, Final considerations. The vast amount of literature 

 overhauled for the facts, the great labour spent in the arrangement of so much 

 hitherto scattered material, the summary of almost everything that is available that 

 has been written on this interesting subject, have resulted in the collection, in a 

 comparatively small space, of facts that are only otherwise to be found scattered 

 through the periodicals and other publications of the last century, and from rare 

 pamphlets that can only be occasionally purchased at a high price or consulted in the 

 National library ; whilst a large number of hitherto unpublished facts, and the 

 generalisations bearing on the subjects as afforded by the evidence at disposal, make 

 the work of the highest value to all students of the subject treated. 



Monograph of the Pterophorina (out of Print). 



(Demy 8vo., 161 pp., bound in Cloth. A few copies only. Price 10/-). 



This book contains an introductory chapter on " Collecting," " Killing," and 

 " Setting " the Pterophorina, a table giving details of each species — Times ot 

 appearance of larva, of pupa and of imago, food-plants, mode of pupation, and a 

 complete account (so far as is known) of every British species, under the headings of 

 "Synonymy," "Imago," ''Variation," "Ovum," ''Larva," " Food-plants," 

 "Pupa," "Habitat," and "Distribution." It is much the most complete and 

 trustworthy account of this interesting group of Lepidoptera that has ever been 

 published. 



Notes on the Zygaenidae. 



Price 1/-. 



A few copies only. These papers contain a full and scientific account of the svn" 

 onymy, variation, distribution, and habits of several species common to Britain and 

 the Alps. There is also a description of a new apecies hitherto confounded as a var- 

 iety of Zygaena trifolii. 



Stray Notes on the Noctuse. 



(Demy 8vo. Price 1/-). 



This contribution to our knowledge of the Nocttjides should be read by every 

 entomologist It contains detailed information, among others, of the following 

 points : — Varieties and Aberrations— The local races peculiar to Britain — True 

 distinction between Varieties and Aberrations — Types of species — Scientific usaee of 

 the term and its general application — Full notes on the Orrhodias, Lencania straminea 

 and other .species in the British Museum — Identical North American and British 

 species of Noetuse — Representative North American species — The genitalia of Noc- 

 ttjides — Identical Japanese and British Noctua?— Classification of the Noctuae — 

 Arrangement of Genera — Criticism of the various methods of classification which have 

 been introduced into England — Want of relationship between Cymatophoridac and 

 Bryophilidae — Separation of Leucania and Nonagria — Position of the Plusiids as 

 exhibited by our species — The position of the Deltoides among the Nocture, and many 

 other matters of interest with which entomologists should be conversant. 



Insects and Spiders. 



(Crown 8vo. Illustrated. Price l/-J. 



A really good introductory text-book to the study of general entomology. It con- 

 tains 15 chapters, giving structural and characteristic details of the various orders of 

 insects. These are entitled— " General external characters of insects," "Internal 

 organs of insects and their functions." " Metamorphosis in insects," " The earwig," 

 "Locusts and Grasshoppers," " Dragonflies," " Caddisfiies," '• Butterflies and 

 moths," " Beetles," " Flies," " Social Insects — bees, wasps and ants," The " Honey- 

 bee," "Wasps," "Ants," and "Spiders." 



