PROM THK DOLPHINS OF THE GANGES. 39 



rassed, inasmuch as Mr. Murray had also kindly sent a large 

 number of birds for dissection (Gruillemots, Gulls, and a Parrot- 

 beaked Awk) at the same time. I may yet fui'ther supplement the 

 originally published record by stating that, when the ducts lying 

 immediately below the surface of the liver were dissected out, they 

 presented a distinctly beaded appearance, the successive enlarge- 

 ments of the lumen of the ducts being occupied by flukes closely 

 packed together. At least twenty were found in one spot. As 

 no figure of these abnormal ducts was published, I subjoin an 

 outline which is an exact reproduction of a sketch I made in 

 my note-book during the dissection. Unfortunately the actual 

 thickness of the walls of the ducts was not represented ; but, from 

 recollection, I can state that it was considerable. 



Outline of an abnormally enlarged biliary duct. Nat. size. 



The most striking feature connected with the structure of the 

 worm was the regularly twisted condition of the digestive canals. 

 They presented, in short, a zigzag appearance, the lateral folds 

 being so angular when seen in profile that they seemed to consti- 

 tute, as it were, a transition between the ordinary simple tubes 

 of a true Distoma and the branched intestinal tubes seen in Fas- 

 ciola. In this view it was that I placed the worms in a distinct 

 genus, for which I proposed the term Gampula. I now think that 

 there was no sufficient ground for this generic separation, since, 

 although in all the flukes which I have examined from Plata- 

 nista the characteristic zigzag appearance is present, yet I find 

 no trace of any attempt at branching. In all Dr. Anderson's 

 specimens obtaitied from the liver-ducts of the Grangetic Dol- 



