PREFACE. 



THE study of Biology in the University of Dublin 

 has been within the last few years greatly en- 

 couraged by the introduction of Natural Science 

 into the Undergraduate Course, and by the exten- 

 sion of the means of practical instruction in Zoology 

 and Botany. 



In teaching Zoology and Comparative Anatomy, 

 I have found that Students desire to have a text- 

 book in their hands to enable them to learn the 

 terminology of the science, and by giving them a 

 connected view of the varieties of animal forms, 

 to assist them in remembering the practical instruc- 

 tion of the class-room. 



There are in English many good works <m sprrinl 

 provinces in Animal Morphology, and this Manual 

 i> not intended to supplant such books, but to lit 

 Students tor the profitable perusal of such works 



lose of Rolleston, IIuxl"-.-, l-'lou-er, 



