1908.] OF THE BATRACHIAN GENUS HEMISUS. 927 



stitch-like along the sides of the body did not appear to me to have 

 any exact relation to the series of lymph-hearts of the left side, 

 that is, they did not accurately overlie them. The hearts lay to 

 the inside of the lateral line, as is also shown in the figure. 



The soft and yet toughish and even sticky tissues which form 

 the fat-holding plug which nearly, or quite, fills the saccus 

 iliacus, and in which the hearts are imbedded, are not altogether 

 easy of dissection, and the exposure of the lymph-hearts with 

 much neatness is very diflicult. It is possible that in the 

 specimen which has just been described I have overlooked a 

 lymph-heart ; for in two others which I have dissected there tvere 

 %mdoi(jhteclly three pairs of posterior lymph-hearts. In one of 

 these, which happened to be rather a small individual, the hearts, 

 at a,ny i^ate of one side of the body, were distinctly visible directly 

 the skin was removed and the fatty mass exposed (see text-fig. 187, 

 p. 924). This latter was, as usual, very yellow. Conspicuous — 

 this time by their paler and browner colour — were the three 

 lymph-hearts, of which the most anterior was not only the most 

 conspicuous but the largest. The other two lying in a row" behind 

 it were, however, quite evident, though jDrobably they would 

 escape the attention of anyone not aware of their existence. 



Text-fig. 189. 



Iliac fat-boclj' of Xeno-pus Icevis dissected to show three lymph-hearts. 



Indeed, it was after the discovery by dissection of three 

 lymph-hearts on each side of the body of a third specimen, that 

 I noted the external appearance of these lymph-hearts in the 

 small specimen to which reference has just been made. In this 

 latter specimen the three lymph-hearts of the right side are repre- 

 sented, as seen by dissection, in text-figure 189, the upper wall 

 of each heart having been removed in order to display the interior. 

 It happened that this particular specimen was especially favourable 



Proc. Zool. See— 1908, No. LIX. 59 



