1010 MESSES. B. C, A. WINDLE AND E. G. PAESOKS ON [DeC. 19, 



13. The palmaris longus is distinct. 



14. The flexor sublimis digitoruin is absent in Bradypus, feeble in 



Cholcepus. 



15. The flexor profundus digitorum has no palmar sesamoid. 



16. The pronator quadratus is very small. 



17. The supinator longus is usually double. 



18. The extensor minimi digiti becomes an extensor brevis 



digitorum and often rises from the carpus or metacarpus. 



19. The extensor ossis metacarpi pollicis is inserted into the 

 trapezium. 



20. The supinator brevis is inserted into the upper third of the 

 radius. Sometimes it is bilaminar in Gholcepus. 



21. The caudo-femoralis is fused with ectogluteus. 



22. Pectineus is sometimes double in Bradypus. 



23. The adductor cruris (gracilis) is double. 



24. The semitendinosus has only an ischial head. 



25. The flexor cruris lateralis (biceps) always has the short femoral 

 head. 



26. The tenuissimus is absent. 



27. The extensor longus digitorum has a condylar origin and is 



inserted into the metacarpal bones. 



28. The extensor brevis digitorum has a fibular origin in Bradypus, 

 tarsal in Cliol(eptis. 



29. The peroneus longus never runs across the sole, sometimes 

 it has a femoral origin, sometimes the muscle is absent 

 altogether. 



30. The peroneus brevis is sometimes absent. 



31. The gastrocnemius has no fabella). 



32. The plantaris is often absent. 



33. The flexor brevis digitorum rises from the calcaneum. 



34. The tibialis posticus is single. 



35. The accessorius pedis is present. 



Mtemecophaghdvt:, 



1. The sterno-maxillaris is present. • 



2. The sterno-glossus is present. 



3. The rectus thoracis lateralis is present. 



4. The splenius colli is absent or very slightly developed. 



5. The rhomboid has no occipital origin. 



6. The subclavius is absent, 



7. When there is a coraco-brachialis it is only the long head 



which is present. 



8. The flexor brevis cubiti (brachialis anticus) does not rise 

 from the neck of the humerus, 



9. The extensor cubiti (triceps) has more than one scapular 



head. 



10. The flexor carpi radialis reaches the metacarpus, 



11. The palmaris longus is usually indistinct or absent. 



12. The flexor sublimis digitorum has only one tendon. 



