LOACH. 



431 



Guikling to occur in the Iguana tuberculata, or common 

 Guana.,* and to which aperture that lamented naturalist ap- 

 plied the term foramen Homianum, in honour of Sir Everard 

 Home, observing that the opening did not afford a passage to 

 any nerve or blood-vessel. This peculiarity in the Loach, it 

 will be observed, is another instance of a relation in structure 

 between the fishes and reptiles, some of which have been 

 already adverted to at page 44. 



The vignette exhibits a magnified representation, four 

 times larger than the natural size. 



* Zoological Journal, vol. i. p. 130. 



