580 PROF. M. WATSON ON THE [JunC 20, 



extremely accurate account of that anatomist. Only in one or two 

 unimportant points did the viscera of my specimen differ from those 

 of Mr. Flower's example. In the latter the small and large intes- 

 tines measured respectively 9 feet 6 inches and 1.5 inches in length, 

 while in my own specimen they measured 10 feet 2 inches and 

 17 inches in length. In my specimen the prostate gland was of much 

 larger size than in Mr. Flower's specimen. As described by him 

 that gland measured, if I understand the figures correctly, three 

 quarters of an inch in length and one inch in breadth ; while in my 

 specimen the gland was heart-shaped, the apex of the gland point- 

 ing backwards, and measured one inch in length and two inches in 

 its greatest breadth at the base. Similarly in my specimen the anal 

 glands were each twice as large as those described by Flower. The 

 difference in size of the prostate and anal glands in the two speci- 

 mens is probably due to difference in age. I have before shown* 

 that in Hycvna crocuta these organs only attain their full size in 

 aged specimens ; and the same remark is probably applicable to PrO' 

 teles cristatus. 



In every other respect (with the exception of the brain, which 1 

 did not examine) I found that the viscera accurately corresponded 

 with the excellent description of Professor Flower. 



In a previous communication - I pointed out that in Hycena 

 crocuta the external and internal iliac arteries present a somewhat 

 unusual arrangement, inasmuch as they come off as distinct trunks 

 from the abdominal aorta. In Proteles cristatus these arteries 

 present the same peculiarity. 



Hitherto, so far as I can ascertain, the muscular anatomy of Pro- 

 teles has not been investigated. "With the view of supplementing 

 this deficiency I have carefully compared the muscles of Proteles 

 with those of Hyana crocuta. The following notes indicate the 

 points in which the muscular system of the former differs from that 

 of the latter animal. It will be understood, where no mention is 

 made of a muscle, that in Proteles the arrangement is identical with 

 that which obtains in Hyana crocuta. 



In instituting this comparison I have availed myself of the paper 

 on the anatomy of Hycena crocuta contained in the ' Proceedings ' of 

 the Society for the year 1879 ^. 



Muscles of the Head and Neck. 



The sterna- cleido-mastoid exactly resembles that of Hycena, but 

 diifers from that of Viverra civetta, in which the " sterno-mastoid 

 is quite distinct from the cleido-mastoid "'', 



^ Proc. Zool. Soc. 1878, p. 419, footnote, and P. Z. S. 1881, p. 519. 



2 Proc. Zool. Soc. 1879, p. 79. 



^ Watson and Young, " On the Anatomy of Hyana crocicta," Proc. Zool. 

 Soc. 1879, p. 79. 



^ "On the Myology of Viverra civetta," by A. H. Young, M.B., ' Journal of 

 Anatomy,' vol. xiv. This paper is taken as my authority on the myology of 

 the Civet in making the comparison of the muscular anatomy of Proteles and 

 Viverra. 



