ANIMAL MECHANICS. 399 



The muscular type of the shoulder joint in the Canidae is 

 shown in the following Tables : — 



Muscular Type of Greyhound — Shoulder Joint. 



Muscle. 



" Master 

 Magrath." 



Average 

 Grey- 

 hound. 



Scapular. 



1. Trapezius clavicularis, . . 



2. Cleidomastoideus, .... 



3. Trapezius inferior, .... 



4. Trapezius superior, . . . 



5. Omo-Atlanticus, .... 



6. Serratus magnus, .... 



7. Bhomboideus, 



Per- 

 centage. 



1.93 



T 



1.05 



1.38 1 

 I. 17 1 

 2.02 

 9.28 

 4- 2 4 



Per- 

 centage. 



I.48 

 I 27 



2.40 

 I.98 

 9.38 

 3.86 



Abductors. 









4. 22 

 2. 29 



7' 35 

 5.i5 

 0. 22 



4.40 

 2.46 

 7.71 



5.51 

 O.30 



Flexors. 







9. Tricipiti accessorius, . . . 

 4. Latissimus dorsi, .... 



18.70) 

 0.38} 

 4. 16 



11.40 



22.67 

 4.40 

 9.29 



Extensors. 









1.84 

 1-34 



2.40 

 1 . 40 



Adductors. 







2. Pectoralis major, .... 



0. 21 

 21.07 



O.23 

 18.86 



j IOO 



IOO 



Total weights, . . 



O'A. av. 

 63-45 



!"di7av. 

 47 94 



In the following Table, I have placed the percentages of 

 groups of muscles, of various Canidae, arranged in the same 

 manner as in the corresponding Table for the Felidae: — 



