581 



the primitive division of the metacarpals of these digits continues along their distal half. The 

 intercondyloid perforation of the humerus is reduced to a minute foramen. 



Mns. South. 



3497. The skeleton of the Javan Chevrotain (Moschus javanicua). 



The vertebral formula is : 7 cervical, 13 dorsal, 6 lumbar, 4 sacral, and 1 1 caudal. The 

 diminutive size of the canines indicates the female sex. 



Presented by Sir Stamford Raffles, P.Z.S. 



3498. The skeleton of the Kanchil Chevrotain (Moschus Kanchti). 



The vertebral formula is : 7 cervical, 13 dorsal, 6 lumbar, 5 sacral, and 13 caudal. Eight 

 pairs of ribs directly join the sternum, which consists of seven bones and an ensiform cartilage. 

 From the length of the canines, this was probably a male and an aged animal, if we may judge 

 from the bone-tendons, which have extended from the ossified origin of the sacro-lumbalis 

 and longissimus dorsi into the substance of those muscles. The metapophysis leaves the 

 diapophysis at the eighth vertebra, and attains the zygapophysis at the tenth vertebra. The 

 diapophysis is a mere ridge on the eleventh dorsal ; it is a tubercle in the twelfth, and becomes 

 a distinct triangular process on the thirteenth dorsal. The intercondyloid perforation of the 

 humerus has been very minute. The broad suprascapular cartilage is partially ossified. 



Purchased. 



3499. The skeleton of a young Pigmy Chevrotain (Moschus pygmteuz). 



The vertebral formula is : 7 cervical, 14 dorsal, 6 lumbar : only two vertebrae are, as yet, 

 anchylosed to form a sacrum, and these are succeeded by eleven other vertebrae, but the end of 

 the tail is wanting. The seventh lumbar shows, by its long and anteriorly-produced diapo- 

 physes, that it is not the homologue of the first sacral of the other Chevrotains detached, 

 but that a supernumerary trunk-vertebra with a pair of free ribs has actually been superadded. 

 This may be an individual anomaly or variety, like the cases of the thirteenth dorsal or the 

 sixth lumbar vertebra occasionally developed in the Human subject. In this specimen all 

 the deciduous grinders are retained, with the first true molar on each side. The first and 

 second milk-molars in the upper jaw have three subcompressed, pointed, conical cusps, the 

 middle one being the largest. The third upper milk -molar has two pairs of thicker conical 

 cusps like the true molar that is behind it. In the first milk-molar of the lower jaw the 

 anterior of the three cusps is obsolete; the second lower milk-molar has the three compressed 

 pointed cusps like its homotype above ; the third lower milk-molar has three pairs of cusps 



resembling the last true molar. 



Hunterian. 



3500. A mutilated skull with the bones of the feet of the Napu Chevrotain (Moschns 

 Napu). 



The small canines indicate the female sex. The characters of the crowns of the permanent 



series of teeth are well shown. 



Presented by Sir Everard Home, Bart., V.P.R.S. 



