1888.] NATURAL SCIENCES OF PHILADELPHIA. 93 



marked in a number of diverse forms. In many bats a tuft of white 

 color distinguishes this region. In the llama, camel and bison 

 shaggy tufts of hair adorn it. Cynocephahis hamadryas exhibits on 

 both shoulders conspicuous growtlis of hair which extend back- 

 ward. In a specimen of Cohibns gxierza} the shoulder was found 

 furnished with an epaulet of long white hair. In other examples of 

 this species the epaulet extends backwards. B. Ornstein^ describes 

 an instance of trichosis circumscripta, in an adult man in which a 

 clump of hair was found on both shoulders. 



In Quadrumana the colors of the limbs are apt to be differently dis- 

 posed from the arrangement in quadrupeds. In Lemur catta the 

 colors are much like those in lower animals and in all varieties white 

 stockings may be seen in the fore arm and leg. The inside of the 

 limb is apt to be of a lighter color than the outer. 



With this qualification I think I may say that the outer surface 

 and anterior surface of the thigh to a point answering to the prox- 

 imal third or fourth of the tibia is differently colored in Quadrumana 

 from the leg and the foot. This is noticeable in Indris hrevicauda- 

 tus^ and Pr§pithecus verreauxi-coquereli.* 



The manus is commonly black in Quadrumana. In Indris hrev- 

 ieaudatus^ the outer side of the arm is black, while the entire fore- 

 arm is white. 



In the figures of Audebert" the separate color marks of the limbs 

 often correspond to the regions of manus, fore-arm, arm, pes, leg 

 and thigh especially for the outer surfaces. From the well known 

 artistic abilities of Audebert these figures may be accepted as au- 

 thoritative.' 



The xdnar Border of the Foreleg. — The ulnar border of the fore- 

 leg often displays hypernutritive characters. The disposition is not 

 confined to the mammalia. In this class the growth is most likely 

 a survival of the natatorial form of foot and is at best an adaptative 



1 Am. Mus. No. 298. 



2 Arch. f. Anthropologic 1S86, 507. 



3 Am. Mu;. No. 260. 



* Ibid. No. 973. 

 5 Ibid. No 260. 



* L'Histoire Nalurelle des Singes, des Makis, et des Galeopitheques, 1800. 



7 C. F. Maynard (Quarterly Journ. Boston Zool. Soc, 1883, II, 18) states that 

 in the variety of bear ( Ursus Americanus) met with in Florida "brownish lines" are 

 seen "starting from the point of each shoulder and extending down the legs on the 

 inside." This disposition is certainly exceptional. 



