1902.] NATURAL SCIENCES OF PHILADELPHIA. 251 



the latter. There are three arteries given off from the arch of 

 the aorta, a left subclavian, left carotid and an innominate, the 

 latter dividing into right carotid and right subclavian, the disposi- 

 tion of the great blood vessels being the same, therefore, as in man. 

 In lemurs, the innominate gives off the i-ight subclavian and both 

 carotids ; in the hedgehog among the insectivores the arch of the 

 aorta gives off two vessels, each of which subdivides into subclavian 

 and carotid, while in the bats the vessel subdividing into the two 

 carotids arises from the arch separately from the subclavians. 



Gexito-Urixary Organs. 



PLATE XI. 



The right kidney lies higher, that is nearer head than the left ; 

 only one IMalpighian pyramid is present. There was nothing excep- 

 tional in the ureters and bladder. The scrotum is well developed 

 and contained the testicle and epidydimis. There was nothing 

 peculiar about the vas deferentia. The spermatic vesicles, per- 

 fectly distinct, were large, extending beyond the base of the blad- 

 der. The prostate gland was also much developed, and emljraced 

 the dorsal surface of the urethra. The Cowper's glands were also 

 large. The penis is pendent, and there appeared to be two suspen- 

 sory ligaments. The gland is surrounded by a circular hump con- 

 sisting of connective tissue, and apparently not connected in any 

 way with the corpora cavernosa. 



The author not having had the opportunity of dissecting a female 

 Galeopitliecus cannot give any account of the female generative 

 apparatus, and must therefore limit himself to offering a resume of 

 the observations made by Leche upon that part of its economy. 

 According to that author,^' there is nothing especially noticeable 

 about the ovaries, except that they are enclosed like the hedgehog in 

 wide-mouth peritoneal sacs, their diaphragmatic ligament extending 

 to the posterior surface of the diaphragm. The uterus, however, 

 is bifid, and the two uteri open by distinct openings into the 

 vagina, in which respect Galeopitliecus agrees with Chiropiera and 

 differs from Insectivora. Among the latter it is said that in 

 Tupaia nana there is a slight indication of a double uterus. The 

 external generative organs resemble, however, those of the lemui*s, 



i» Op. cit., p. 68. 



