MEGATHEEIID^. 



97 



The following specimens, with the eccception o/No. 40674 «, were 

 found in association tuith the cranium. 



37649. The mandible, wanting all the teeth. This specimen is 

 {Fig,) figured, under the name of S. leptocej)haIum, by Owen 

 op. cit. pi. viii. figs. 4 (teeth restored) and 5, and ap- 

 parently in pi. ix. figs. 2, 3 (the teeth being restored in 

 fig. 2 ^) ; it is also described and figured by the present 

 writer, op. cit. p. 494, pi. xlix. fig. 1. The diff'erence 

 between this specimen and the mandible of ;S^. hptoceph- 

 alum may be seen by comparing Owen's figure (pi. viii. 

 fig. 4) with the one given by P. Gervais in the ' Mam mi- 

 feres Fossiles de I'Amerique Meridionale,' pi. xi. fig. 1. 



37630. The right scapula. This specimen is relatively wider than 



the corresponding bone of >S^. leptocephalum. 



40674 a. The right humerus. This bone is longer than the humerus 



of the type species (No. 37438), and differs in several 



details, especially the greater vertical depth of the inner 



" portion of the distal expansion, and the greater width of 



the bar over the entepicondylar foramen. 



37631. The right ulna. 



37632. The right radius. This bone is smaller than the radius of 



S. leptocephalum (No. 37439). 



37633. The left radius. 



37634r-42. Several bones of the manus. 



37643. The right calcaneum. This bone differs from the calcaneum 



of the type species (No. 37483) by the deep concavity on 

 the plantar surface. 



37644. The imperfect right astragalus. This specimen is readily 



distinguished from the corresponding bone of the type 

 species by the great prominence of the external trochlear 

 ridge for the tibia, and agrees in this respect with the 

 larger specimen (No. 18620 h) noticed below under the 

 head of the present species. 



37645. A metatarsal. 

 37646-7. Two sesamoids. 



^ In the description of the plate this figure is referred to the upper jaw. 

 PART V. H 



