362 Savage and Wyman 



is distinct from everything unless it be Helix Jigera. The 

 character of the surface and skin is the same in both, and the 

 base is nearly the same. I have seen very depressed specimens 

 of Helix ligera, but none approaching this. It may, however, 

 be subject to still further reductions in the height of the spire, 

 until it reaches the depression of the present shell. If it 

 should be the same, it will exhibit very extraordinary variation 

 in this respect, from a high conical to a planulate form. It re- 

 sembles Helix suppressa externally in everything except size. 



Art. XXX. — observations ON THE EXTERNAL CHARACTERS 

 AND HABITS OF THE TROGLODYTES NIGER, Geoff. By Thomas 

 S. Savage, M. D., Corresponding Member of the Boston Society of 

 Natural History — AND ON ITS ORGANIZATION, by Jeffries VV^y- 



MAN, M. D. 



The specimens belonging to the Chimpanzee, Black Ourang, 

 or Simia troglodytes of naturalists, from which the following 

 descriptions are in part drawn, were presented to the Boston 

 Society of Natural History by Thomas S. Savage, M. D., a 

 missionary stationed at Cape Palmas, West Africa. To the 

 enlightened zeal and liberality of Dr. Savage the society is 

 also indebted for numerous other rare and valuable zoological 

 specimens, especially of insects, from the same region. The 

 specimens belonging to the Chimpanzee, consist of the skeleton 

 nearly entire, the head covered with the integuments, the or- 

 gans of respiration, and of generation of the male and female, 

 and the anterior and posterior hands, all from adults ; also, an 

 entire specimen of a young male subject. Dr. Savage has 

 transmitted notes of his own observations relative to the habits 

 and external characters of this wonderful race of animals, 

 which will be found in the following pages.* 



* Dr. Savage's notes are divided into two parts : the first consisting of " observa- 

 tions on the external characters ;" and the second, of " facts relative to the habits of 

 the Chimpanzee.'' These will be distingnished from the remarks, which have been 

 added, by inverted commas. The measurements have been reduced to a tabular 

 form to facilitate comparisons. j. w. 



