600 report — 1878. 



with the intermediate layer of muscles (e.g. man, lemurs, phalanging marsupials). 

 It may be derived, however, from the plantar layer, and thus be associated with the 

 adductors (e.g. lion, dog, leopard, puma, otter, and other digitigrade carnivora). 



Lastly, in many adult animals, the relation of the intrinsic muscles to the 

 metatarsus, both as regards their origin and position, corresponds with transitory 

 conditions in the foot of the human embryo.* 



3. On the Gill Skeleton of Selache Maxima. By A. Macalistek. M.J). 



The author directed the attention of the section to a fine specimen of the gill 

 skeleton of this shark in the Museum of the University. The remarkable dentinal 

 gill-rakers are preserved in situ, and the different portions of the cartilages of the 

 palato-pterygoid, hyoid, and branchial arches are shown united. These are from a 

 large shark cast ashore last year at Kinsale, but, unfortunately, much mutilated 

 before it came into the hands of Mr. Cullen, the museum assistant of the Uni- 

 versity. 



SATURDAY, AUGUST 17, 1878. 

 The Department did not meet. 



* This paper will be found in an extended form in the ' Journal of Anatomy and 

 Physiology ' (Oct, 1878). 



