

504 THE ZOOLOGIST. 



injurious they certainly are to flour stores. These larvae swarm 

 in all places where flour and meal are kept, and often do great 

 damage to biscuits, especially those which are taken to sea. 



A Zoological Atlas (including Comparative Anatomy) ; with Prac- 

 tical Directions and Explanatory Text. For the use of 

 Students. 249 coloured figures and diagrams. By D. 

 M' Alpine, F.C.S., Lecturer on Biology and Natural 

 History, Edinburgh. {Invertebrata.) Edinburgh and 

 London : W. & A. K. Johnston. 1881. 



The first part of this Atlas, containing the Verteb7 % ata has 

 already been noticed in 'The Zoologist' (anted p. 892). The 

 second part just published deals with the Invertebrata, and 

 contains carefully drawn figures of the external and internal 

 structure. This is so much more varied than is the case with 

 the Vertebrates, that the number of typical forms is necessarily 

 much greater. To keep the size of the work within due limits 

 the author has been obliged to make a selection, and has given 

 a preference to such genera as are required for the Practical 

 Examination of the University of London. In that examination 

 not only has the candidate to dissect specimens placed before 

 him, but also to examine and describe prepared specimens, and 

 the first four plates in this Atlas may be regarded as preliminary 

 exercise in seeing and describing. They are introduced to show 

 how the lower forms may be studied, and how by the use of what 

 the author calls " Life-History Diagnoses" the student may take 

 in at a glance the chief features of their life. 



As regards the explanatory text, the brief introductory 

 description of the animal usually gives those characters which 

 are best observed in the living state, and which show its relations 

 to its surroundings, while the remainder of the text describes the 

 figures, dealing with the various parts of the animal in detail. 

 The clearness with which these details have been drawn renders 

 the Atlas on the whole a useful aid to practical anatomy. 



W'KST, NI'.WMAS ANH Ci)., wa.NTKKS, 54. UATToK HARDEN, LONDON, B.C. 



Or 1 



