Bibliographical Notices. 131 



for chapters on general subjects ; and, perhaps as a consequence, 

 vol. iii. contains no illustrations. 



We are glad to see that Mr. Tatt has adopted a suggestion made 

 by some of his critics, and has given a somewhat fuller table of con- 

 tents, which will much facilitate the use of the book. One further 

 suggestion we might make, with regard to the terminal Index, that 

 when the same insect (say " meridionalis 4;rtr.,Lasiocampa,"onp. 550, 

 col. 2) is referred to under several pages (23 in the instance quoted, 

 and sometimes more in other cases) the page where the notice of the 

 insect begins, or where it is described, might be placed first, which 

 Mould frequently obviate the waste of time involved in turning up 

 every page till that most likely to be required is reached. 



Volume iii. contains the "conclusion" (? continuation) of what 

 Mr. Tutt calls the " Sphingo-Micropterygid Stirps," and includes the 

 Lachiieides, Dimorplikles, Attacidcs, and part of Sphvu/idcs, the 

 entire volume being devoted to 13 species only, viz. Pachygastria 

 tiifoln, Lcmocam/)a fjuercus, Macrothylacia ruhi, Cosmotriche potaioria, 

 Gitstropaclia iUcifolia^ Eatrlclin quercifolia, Diinorpha versicolora, 

 ISatarnla pavonia, Mimas iilue, Smeriiithus ocellata, Amorplui 

 popall, and IJemaris fucifonnis and tityus. Of course every species 

 will not require to be treated at the same length as Lasiocampa 

 quercus, which occupies (as a species) no less than 6ij of Mr. Tutt's 

 closely-printed pages ; but we tremble to think of the number of 

 volumes and the number of years which will be required to deal 

 Avith over 20u0 species of British Lepidoptera on the same scale. 

 On pp. 55-57, 246, 247 we have a list of 47 named varieties of 

 L. quercus and aberrations, all but 13 named by Mr. Tutt himself. 

 Is not this rather overdoing it? Much attention, too, is paid to 

 gynandromorphism, hybridism, &c. in this and other species. 



Turning to more general matters, the abstracts given of different 

 sy&tems of classificaliou of groups, often taken from old or scarce 

 books, will be most useful to all students who have not access to 

 the best entomological libraries. Mr. Tutt seems to aim at making 

 liis book a huge compendium and cyclopaedia of all that has been 

 published on the species of which ho treats ; and it will be of great 

 value to generalizing entomologists, who will be able to sift from it 

 a great amount of valuable information in furtherance of their 

 species studies. A large amount of information is given respecting 

 foreign species, especially those of Continental Europe and North 

 America; and also on parasites, and various other topics inci- 

 dentally connected with the main subject of the Avork. 



We are sorry to find that there is only a meagre list of new sub- 

 scribers since the last volume ; but as the work is necessarily too 

 costly for many entomologists, and must become increasingly so with 

 the publication of each volume, we would wish to emj)hasize its 

 great value as a book of reference for public Natural History or 

 Entomological Libraries, especially at a distance from London, or the 

 University towns, which alone possess full series of the books to 

 which Mr. Tutt's work is largely an abstract — not that we do not 

 also fully recognize the large amount of material due to the original 

 observations of Mr. Tutt and his coadjutors, Avhich is published here 

 for the firbt time. AV. F. K. 



