HuTTON AND CouGHTREY. — On the Eamscleugh Cave. 14 



Q 



runs directly down the outer surface of sliaft of bone, and fades gradually on 

 the posterior aspect of ectocondylar tuberosity. 



Glutceus medius and Glutceus quartus. 

 The remains of these two muscles seem to me to be present in some 

 muscular fibres still attached to the ectotrochanterian tuberosity and part of 

 the depression behind this. 



Glutceus quintus (Mayer). 

 On a plane below, but intermediate to the tuberosity to which Glutceus 

 externus is attached, and the ecto trochanteric tuberosity, is a small depression 

 of about one-third of an inch wide, and into it is inserted a slender tuft of 

 tendon, which I take to belong to the above muscle. 



Obturator internus. 



The ectotrochanteric surface is divided into two portions by a well marked 

 ridge curving from the posterior border of epitrochanteric margin downwards 

 and forwards towards ectotrochanteric tuberosity, slightly above which it 

 subsides. 



The upper moiety of surface thus mapped out is smooth compared with 

 the lower, and presents the appearance of once having been covered by bursal 

 tissue. The lower and posterior moiety is elevated and depressed, likewise 

 roughened for the insertion of muscles. 



Now in the posterior half of the lower surface are two well marked 

 vertical depressions, one situated slightly in front and above the other one. 

 And it is in this anterior one we have remaining a strong tuft of tendon, 

 which, from the direction of its fibres, I believe to have been the Obturator 

 internus.^ 



The posterior and lower one is that in which Professor Owen has located 

 the insertion of the Quadratus femoris. 



lliacus internus. 

 At the lower part of the anterior surface of the neck of the femur, just 

 where it merges into the pretrochanteric surface, is a marked roughness with 

 several of the fibres of above-named muscle still attached to it. 



This is very interesting, as proving conclusively that this slight rough 

 prominence is the representative of the smaller trochanter in mammalia, as 

 had been foreseen by Owen. 



Crurceus, part of Vasti. 

 Arising partly from the under surface of the base of ectotrochanteric 

 tuberosity, partly from the ridge beneath it to the extent of half-an-inch, and 

 partly from the linear ridge of the pretrochanteric face in the vicinity of 



* I am aware that Professor Owen has stated Abductor magnus is inserted into this 

 depression, but he has not had any specimen in which tendon has been left. 



