1899.] THE MYOLOGY OF THE EDENTATA. 1013 



19. The supinator brevis is inserted into nearly the whole of the 



radius. 



20. The caudo-femoralis is separable from the ectogluteus with 



difficulty. 



21. The adductor cruris is single or double. 



22. The semitendinosus always has a caudal head, though the 



ischial may be present or absent. 



23. The femoral head of the flexor cruris lateralis is present. 



24. The tenuissimus is absent. 



25. The femoral origin of the extensor longus digitorum is feeble 



or absent. 



26. The extensor brevis digitorum sometimes rises from the 

 fibula. 



27. The peroneus longus has no femoral origin and its tendon 



passes across the sole. 



28. The gastrocnemius has no fabellae. 



29. The plantaris is absent. 



30. The flexor brevis digitorum rises from the calcaneum. 



31. The tibialis posticus is double. 



32. The accessorius pedis is present and fleshy. 



Obtcteropodid^. 



1. The sterno-facialis is well-marked and extends back (caudal- 



wards) superficially to the pectorals to form a sternalis as in 

 Erinaceus and Bathyergxis, 



2. The sterno-maxillaris is absent. 



3. The rectus thoracis lateralis is absent. 



4. The splenius colli is absent. 



5. The rhomboideus has an occipital origin. 



6. The subclavius is lai'ge. 



7. The clavicular deltoid is a separate muscle and is inserted into 



the radius. 



8. The coraco-brachialis longus alone is present. 



9. The flexor longus cubiti has only a glenoid head. 



10. The flexor brevis cubiti rises from the neck of the humerus. 



11. The extensor cubiti has more than one scapular head. 



12. The flexor carpi radialis reaches the metacarpus. 



13. The palmaris longus is indistinct or absent. 



] 4. The flexor sublimis digitorum has four complete tendons. 

 1.5. The flexor profundus digitorum has no palmar sesamoid. 



16. The pronator quadratus extends over the whole length of the 

 forearm. 



1 7. The supinator longus is present. 



18. The extensor ossis metacarpi pollicis is inserted into the 



trapezium. 



19. The supinator brevis is iuserted into the upper half of the 

 radius. 



20. The caudo-femoralis is fairly distinct. 



21. The obturator internus has an intra-pelvic portion. 



