I46 DESCRIPTION OF A NARWAL. 



2. Monodon microcephalus. Small-headed Nar- 

 wal. 



Le Narwal microcephale. Narwalus microcephalus. 

 La Cepede, Hist. Nat. des Cet. pi. v. fig. 2. 



P- 159- 



Body of a conical shape : head blunt, and equal to 

 one-tenth of the whole length : the ridge ex- 

 tending from the tail to the middle of the 

 back : tail divided ; lobes pointed. 



Plate VI. 



Fig. 1. Represents a side view of the Monodon 

 microcephalus. 



Fig. 2. The under-side of the animal, a. The 

 sulcus containing the organs of generation, b. 

 The anus. 



Fig. 3. a. The arytenoid cartilages, forming 

 the valvular tube, which enters the nares, and 

 through which the animal breathes, b. A lateral 

 view of the thyroid cartilage, c. A side view of j 

 the back part of the cricoid cartilage, d. A por~ 

 lion of the trachea. 



Supplement. 

 Since the above account was written, I have 

 been able to collect a few more particulars con- 

 cerning the Small-headed Narwal, which I shall 

 take the liberty to communicate. 



In La Cepede's account of the Small-headed 

 Narwal, he mentions, that it was found in the 



