638 ON THE ANATOMV OF THE CHINESE WATER-DEER. [NoV. 14, 



reticulum-cells are rather shallow. The psalterium has, as I count, 

 nine primary 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 2g coils in the colic 

 spiral ; and at the junction of the ileum and caecum is a distinct 

 glandular patch, like a largish " Peyer's patch," though not having 

 the complex structure of the ileo-csecal gland met with in Mosehus, 

 Cervus, Camelopardalis, &c. 



The only figure hitherto extant (that given by Prof. Garrod in 

 his paper already quoted) of the brain of Hydropotes having been 

 taken from a very young specimen, it may be worth while to give 

 figures of the superior and lateral aspects of that removed from this 

 adult specimen, which will be useful for comparison with Garrod's 

 earlier one, as well as with those given by that author and Prof. 

 Flower of the brain in Elaphodus, Mosehus, and Pudua, and with 

 the series of semidiagrammatic sketches illustrating Dr. Krueg's 

 valuable paper on the cerebral convolutions of the Ungulata gene- 

 rally *, whose nomenclature on the subject I have also adopted. 



In its cerebral organization Hydropotes approaches the genus 

 Capreolus more nearly than any other Cervine form known to me, the 

 similarity of the two being obvious on comparison of the figures now ex- 

 hibited (see p. 637 ),with those of Leuret and Gratiolet - and of Krueg^ 

 of the Koe. From Elaphodus and Pudua these two forms differ in 

 the entire disappearance (save very slightly anteriorly) of the calloso- 

 marginal (" splenial ") sulcus from the superior aspect of the hemi- 

 spheres, owing to the greater "pronation" of their brain generally. 



Sir Victor Brooke has been led, from a consideration of other 

 points "*, to associate Hydropotes and Capreolus with Alces, as a 

 group per se, with affinities in some points in the direction of the 

 Old-World (Plesiometacarpal), in others in that of the New-World 

 (Idiometacarpal) forms. It appears to me that the additional evi- 

 dence in this paper, especially that derived from the resemblance of 

 the generative organs, is strongly in favour of this association, 

 so far, at least, as Hydropotes and Capreolus are concerned. The 

 general similarity in fades of Capreolus to Hydropotes has often 

 struck me, and has even, I believe, led others into the error of 

 mistaking one for the other ! 



That Hydropotes is in no way intimately related to Mosehus 

 was already amply demonstrated ; and the latter form also differs, 

 as we now know, in the conformation of its glans penis and in the 

 possession of Cowper's glands. 



^ Zeitschr. f. wissenschaftl. Zool. xxxi. pp. 297-344. Cf. also Garrod, Coll. 

 Papers, pp. 512-517. 



' Anat. Svst. Nerveux, Atlas, pi. x. 



3 L. c. pl.'xxi. * P. Z. S. 1878, p. 889. 



