ON THE ANATOMY OP THE CHINESE WATER-DEER. 313 



53. SUPPLEMENTARY NOTES ON THE ANATOMY p.z.s.1882, 

 OF THE CHINESE WATER-DEER (HYDROPOTES P' 636 ' 

 INERMIS)* 



Ay adult male of this curious Deer having lately passed through my 

 hands, it may be advisable to record my notes on certain of its soft 

 parts, on the condition of which the late Prof. Garrod laid considerable 

 stress in the classification of the Ruminants, but some of which were, I 

 believe, unknown to him, the specimen of Hydropotes described by him t 

 having been a young (in fact still-born) example of the opposite sex. 



As regards the male organs of generation, the rjlans penis is an 

 elongated tapering compressed cone, with the urethral opening sub- 

 terminal, thus closely resembling those of Capreolus, Cervulus, and 

 Elapliodus. There are no traces of Cowper's glands, as is also the case 

 in the first and last of the three genera just named. In these respects, 

 then, Hydropotes resembles most closely Capreolus and Elaphodus, and 

 differs from the Rusine Deer, with which, according to the views of Sir 

 Victor Brooke at one timet, in part indorsed by Garrod , it was sup- 

 posed to have perhaps its closest relations. The large " rtisiform " 

 Spigelian liver-lobe, which was found by the last-named anatomist in the 

 young of Hydropotes, and the presence of which he adduced as supporting 

 those views, is, however, quite absent in the liver of the present speci- 

 )nen. There is a similarly situated " spurious cystic fossa," containing, 

 however, no gall-bladder, only a minute almost atrophied cord, of 

 apparently vascular nature. The caudate lobe is well developed. 



In the rumen of the stomach the villi, where best developed, are pretty 

 uniformly filiform, slightly flattened, but not clavate. The reticulum- P. Z. S. 1882; 

 cells are rather shallow. The psalterium has, as I count, nine primary P- 638< 

 laminae, and is quadruplicate. 



The length of the intestines in the present specimen (the body of 

 which had a total length of 33 inches, including the three-inch-long tail) 

 was 29 feet 2 inches, 21 feet 7 inches being small intestine, the remainder 

 (7 feet 7 inches) colon and rectum. The relative lengths, therefore, of 

 these parts were not very different from those that obtained in the 

 younger individual already described. The caecum was three inches long. 

 There were 2J coils in the colic spiral ; and at the junction of the ileum 

 and ca3cum is a distinct glandular patch, like a largish " Peyer's patch," 



* Proc. Zool. Soc. 1882, pp. 636-638. Read Nov. 14, 1882. 

 t Cf. P.Z. S. 1877, p. 789, and Coll. Papers, pp. 422-425. 

 J P. Z. S. 1872, p. 525. Coll. Pap. p. 425. 



