mOM THE DOLPHINS OF THE GAKGES. 37 



on the 3rd of January, 1873. As it was removed from the duo- 

 denum, it might be expected to turn out a different species ; pro- 

 bably it had escaped from the liver, the ducts of which may have 

 contained others that evaded notice. Be that as it may, there can 

 be no doubt as to the species, which is easily recognized by the 

 fact that the body is irregularly serrated at its margin on either 

 side below the ventral suckers. I know of no other trematode 

 possessing these sinuosities. Dr. Anderson's parasite does not 

 exhibit these irregular serrations so distinctly and sharply as the 

 artist has represented them in Diesing's enlarged figures ; but this 

 may be due to the fact that the parasite is preserved in glycerine, 

 which has certainly distorted the specimen. Without attempting 

 any description of the anatomy of the worm, Diesing remarks that 

 the internal organs may he seen through the transparent body. 

 The uterine organs, crowded with ova and of a purple colour, 

 are represented in his figures as forming a rather complicated 

 rosette, branched after the fashion of a raceme. I have no doubt 

 that the artist has been misled. He has represented its mode of 

 termination above the ventral sucker quite correctly ; but the 

 uterine channel is not branched. I could not myself trace the 

 passage towards its lower or ovarian end ; but the upper uterine 

 folds were few in number, broad, and simple in character. 

 Diesing's figures give only obscure hints as to the situation of the 

 remaining internal organs. Dr. Anderson's specimen showed 

 two large irregularly oval testes placed one above the other in 

 the middle line and rather higher up than is usual with those 

 distomes that have the organs presenting this simple form. Its 

 ducts were not visible. The yelk-forming glands are particularly 

 well marked in Anderson's specimen, and consist of two laterally 

 disposed masses, that on the left side reaching somewhat higher, 

 whilst that on the right side extends correspondingly lower than 

 its fellow. None of the vitelligene ducts were visible ; but the 

 so-called yelk- cells or capsules were well seen. The oval-shaped 

 eggs were tolerably distinct and measurable, yielding a length of 

 yi-^ inch from pole to pole, by about -^^^ inch in their transverse 

 diameter. I could not get a clear view of the digestive canals ; 

 but, from the slight markings here and there noticeable, I feel 

 tolerably sure that they conform to the ordinary unbranched type. 

 I have represented their probable position and extent by a dotted 

 outline. I saw no spines on the surface of the body ; but the 

 well-known tendency of tliese organs to fall off may have been the 



