101 





length from 

 Vertex to anus. 



length of 

 arm. 



length of 

 forearm. 



length of 

 thigh. 



length of 

 leg. 



June 14. 1886. 



27,5 cm. 



14 



17 



12 



14 



May 5. 1887. 



40,5 



17,1 



21 



14 



16 



November 1. 1887. 



41,75 



19,2 



22,5 



15,5 



17 



In fche ürst place .the forearm is therefore increasing in length and 

 is the principal cause of the enormous length of the arms in the füll 

 grown individual. 



From my material collected in India and from some measurements 

 of skeletons in the Leyden Museum and in the collections of the Royal 

 Zoological Society of Amsterdam , the same conclusion may he derived. 

 In Hylobates syndactylus that in other respects is very different from 

 the other species of Hylobates, this difference is not the least, as 

 may be seen from some of my measurements. 



Hylobates syndactylus. 





Len 

 to 



gth from atlas 

 apex coccygis. 



Humerns. 



Kadi us. 



Femur. 



Tibia 



Specimen Amsterdam. 





24,5 



17,2 



18,1 



13,4 



11,7 



Specimen Amsterdam. 



Specimen Amsterdam. 

 (189). 





40 

 39,9 



26,5 

 27 



28,2 

 30 



20,5 

 20,3 



17,8 

 17,2 



Specimen Leyden. 





41 



29 



32,2 



22 



19 



Specimen Amsterdam. 



(167) in spirit. 

 Specimen Amsterdam. 



(121) in spirit. 



from Vertex to apex 

 coccygis. 



28,5 

 53 



11 



28 



11 

 29 



8,25 

 19,5 



8,25 

 18,75 







Hylobates leuciscus. 









frort 



atlas to apex 

 coccygis. 











Specimen Leyden. 





18 



13,4 



13,5 



10,6 



10,2 



Specimen Leyden. 





28,2 



18,4 



22,1 



15,6 



13,2 



Specimen Amsterdam. 





30,5 



22,6 



26,2 



19,8 



17,5 



Specimen Leyden. 





31,1 



22 



26 



20,5 



18,4 



Semnopithecus. 



Semnopithecus melalophus Raffles. . 



(Sem. ferrugineus, Schlegel). 

 Sumatra: near Singkarah; ad 9- (110) ad. cf (111). Kotta Saninear 

 Solok; young cT (166), a skeleton 9 (119) and a skull 9 



. 



