79 



As mentioned, the specimens are, however, so alike in colouras well as in» 

 every other respect that I cannot possibly believe them to be specifieally 



Fourtli and fiftb toes of two specimens of Hylambates aubryi, sbowing- 

 the different development of tbe web in tbis species. 



distinguisbable. In addition to this they live at the same place, and 

 belong to the same collection in which they represent the'most different 

 types. In other specimens from this same collection the differences in 

 the development of the web are less pronounced showing intermediate- 

 forms between the two extremities drawn above. 





