HuTTON AND CouGHTREY. — On some Moa Remains. 273 



fourth toes. They also possessed a separate semi-sesamoid, there being a fibio- 

 cartilaginous plate of about a quarter inch in thickness interposed between 

 them, and the back of inner trochlea and its tarso-phalangeal joint. (Fig. \, e]» 



From the margins of this fibro -cartilage arises the annular sheath of this 

 digit, and this is partially divided by septse for the tendons. 



The tendons left are : — 



1. About 4 inches of outer slip of flexor perforatus (fig. 1, /) to base 

 of proximal bone of this toe, the stump of inner slip. 



2. A small tendon enclosed in a separate sheath outside the annular 

 ligament, and ending in the outer side of the base of this bone. It lies at the 

 outer margin of the ligamentous substance. What it is I am unable to say. 

 Fig. 1, g indicates its position. 



3. Lying within the annular sheath tendons, that present two strong 

 bundles proximally (fig. 1, h), but are so dishevelled and unravelled distally 

 (fig. 2, h) that it is impossible to difierentiate them into separate tendons, 

 possibly deep flexors, for they are evidently the remains of tendons passing to 

 the distal segments of this toe. 



c. — Tibialis anticus (fig. 2, i) : — 



A mere tuft of the insertion of this tendon is left, but it is clearly defined 

 slightly below and to the side of the anti-interosseal canal, from which it is 

 separated by a bridge of bone. 



The anti-interosseal canal is large, and its bifurcation is deeply situated, 

 fig. 1, h). 

 d. — Extensor longus digitorum pedis, (fig. 1, T) : — 



A portion of the tendon of this muscle is left, (fig. 1, 6), the rest of 

 extensor group of tendons are destroyed. 



Inserted into a depression beneath and in front of ecto-metatarsal tuberosity 

 is a tendon, what it is (?) I do not know (fig. 1, m). 



The scraps marked n in fig. 1 and I in fig. 2 indicate displaced portions 

 of the gastrocnemii. 



For a detailed account of skin and degree of decay see Captain Hutton's 

 part of this paper. 



Had the peculiar distinctness and separation of the tendons going to the 

 second toe anything to do with peculiar motion of this digit in the Moa ? 



References to Plate XIX. 

 Fig. 1 indicates anterior aspect of specimen. 



d, anterior faces of trochlese. 1', inner; 2', middle; 3', outer trochlea. 

 Fig. 2 indicates posterior and inner aspect of specimen. 

 a. hallux ; 5., ungual segment of fourth toe ; c, second segment of third 

 toe ; d.. proximal segment of second toe ; e% refers to the decayed left tarso- 

 metatarsus. 



The remaining references are distributed throughout the description. 



