Macalister — On the Anatomy of Aonyx. 
547 
Yery slight; the Thebesian valve Jarger; sinus of Eead is not very large. 
The foramen ovale is closed, but in the left auricle the upper edge of 
the crescentic valve is not attached, and allows of a blow-pipe being 
introduced for a short distance. 
MUSCLES OF THE FORE LIMB. 
iscapularis inferior, 0*14 
scapularis superior, 0-14 
clavicularis, . 0*47 
2. Sterno-mastoideus, . . . 0"38 
3. Cleido-mastoideus, . . . 0*19 
4. Omo-atlanticus, . . . 0"17 
5. Rhomboideus, major, minor and 
occipital, .... 0'24 
6. Teres major, . . . .0-12 
7. Latissimus dorsi, . . . 0'27 
8. Subscapularis, . . . 0'38 
9. Pectoralis ) superficial part, . O'S 
major, j deeper, . . 0*87 
10. Deltoideus scapularis, , . 0'06 
11. Deltoideus acromialis, . . 0*06 
12. Deltoideus clavicularis, . . 0'18 
13. Supraspinatus, . . . O'So 
14. Infraspinatus, . . . 0*2 
15. Serratus magnus, . . . 0*71 
16. Biceps humeri (scapularis), . 0*13 
17. Brachiseus, . . . . 0*11 
18. Triceps longus, . . .0*58 
19. Triceps internus, . . .0*15 
20. Triceps externus, . . . 0'33 
21. Triceps accessorius, . . 0'22 
22. Anconeus externus, . .0-04 
23. Anconeus internus, . . 0*04 
24. Pronator radii teres, . . 0*09 
25. Flexor carpi radialis, . . 0 04 
26. Palraaris longus, . . . O'll 
27. Flexor carpi ) olecranal, . 0'13 
ulnaris, j condyloid, . 0*03 
28. Flexor digitorum sublimis, . 0'03 
29. Flexor digitorum profundus, \ ^ 
30. Flexor pollicis longus, j 
31. Pronator quadratus, . . 0*03 
32. Supinator radii longus, . . 0*15 
33. Extensor carpi radialis longior, 0'09 
34. Extensor carpi radialis brevior, 0*10 
35. Supinator radii brevis, . . 0*04 
36. Extensor digitorum longus, . 0*06 
37. Auricularis, . . . . 0'02 
38 Extensor carpi ulnaris, . .0-08 
39. Extensor ossis metacarpi pollicis, 
40. Extensor secundi internodii \ . „ 
pollicis et indicis, ) 
41. Extensor tertii et quarti digiti, 0 03 
MUSCLES OF THE HIND LIMB. 
1. Sartorius, 
. 0-26 
2- Psoas parvus. 
. 0-13 
3. Psoas magnus, 
. 0-16 
4. Pectineus, 
. 0-07 
5. Adductor primus, . 
. 0-33 
6. Adductor secundus, a, > 
* 0-22 
7. Adductor secundus, /3, 5 
8. Adductor tertius. 
. 0-18 
9. Quadratus femoris, 
. 0-03 
10. Obturator externus. 
. 0-13 
11. Obturator internus, 
. 0-07 
12. Agitator caudje, 
. 0-14 
13. Glutgeus maximus, 
. 0-06 
14. Pyriformis, 
. 0-08 
] 5. Gluteus medius, 
. 0-40 
16. Gluteus minimus, 
. 0-07 
17. Gluteus quartus, 
. 0-01 
18. Tensor vagina femoris, . 
. 0-06 
19. Biceps femoris, 
. 0-48 
20. Bicipiti accessorius, 
. 0-10 
21. Semimembranosus, 
. 0-35 
22. Semitendinosus, 
. 0-22 
23. Gracilis, 
. 0-16 
24. Rectus femoris, 
. 0-34 
25. Vastus externus, 
. 0-45 
26. Vastus internus, 
. 0-17 
27. Crurseus, 
. 0-04 
28. Popliteus, 
. 0-08 
29. Gastrocnemius externus, 
. 0-22 
30. Gastrocnemius internus, 
. 0-34 
31. Plantaris, 
. 0-22 
32. Soleus, 
. 0-05 
33. Flexor digitorum longus, 
. 0-06 
34. Flexor hall ucis longus, 
. 0-17 
35. Tibialis posticus, 
. 0-07 
36, Tibialis anticus, 
. 0-23 
37. Extensor hallucis, 
. 0 03 
38. Extensor digitorum longus, 
. O il 
39. Peroneus quinti, 
. 0-04 
40. Peroneus brevis, 
. 0-06 
41. Peroneus longus, 
. 0-06 
N. B. For Figures illustrative of this 
Paper, see Plates xxx. xxxi. and xxxii., 
also explanation thereof. 
R. I. A. PROO. — VOL. I., SER. II., SCraNCE. 
