PREFACE. 



And the last two plates represent, of the colours of life, the 

 details of the soft parts of the Cuttle-fish from which the bone, 

 figured on plate 188, was extracted, also uufigured before. 



The succeeding Decades will illustrate as many different genera 

 as possible, and deal first, usually, with species of some special 

 interest, and of which good figures do not exist, or are not 

 easily accessible. 



Frederick McCoy. 



2nd July, 1889. 



