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 on special 

 provinces in Animal Morphology, and this Manual 

 is not intended to supplant such books, but to fit 

 Students for the profitable perusal of such works 

 as those of Rolleston, Huxley, Flower, &c. 



