486 



ventral sucker to halfway between testes and posterior end of worm. 

 Eye-spots each side of pre-pharynx. 



27) Leioderma furcigerum Olss. 



Int. Pseudopleur onectes americanus Walb. (Winter Flounder). 



Platysomatichthys hippoglossoides Walb. (Greenland Turbot). 

 Hippoglossoides platessoides Fab. (Rough Dab). 

 CryptacantJiodes maculatus Storer. (Wry-mouth). 

 New genus: Islog, smooth; ôégi-ia, skin. 3,85X1,23. Spindle 

 shaped. Ventral sucker twice as broad as mouth-sucker, anterior to 

 middle. Lobulated ovary behind sucker and spherical testes side by 

 side behind ovary. Uterus with dark eggs filling posterior end and 

 passing between testes to genital opening front of sucker. Vitellaria 

 lateral but short, extending from ventral sucker to posterior edge of 

 testes. Pharynx, oesophagus, caeca ending little behind testes and 

 falling far short of posterior end of worm. Excretory vessel divides 

 at testes. 



28) Fellodistomum incisum E.ud. 



Gall bladder 



Anarrhichas lupus L. (Wolf-fish). 



New genus: f el, fellis, gall-bladder. 6X2,5. Thick in middle and 

 rapidly narrowing towards the ends. Smooth, greenish. Ventral 

 sucker twice as broad as oral sucker in old specimens and situated 

 nearer posterior than anterior end. Many resemblances to Leioderma 

 but with sucker and genital glands crowded backwards. Lobulated 

 ovary just behind sucker and to the left, not prominent. Testes side 

 by side, large and spherical. Excretory vessel lying between them 

 and branching behind sucker. Short lateral vitellaria each side of 

 ventral sucker. Caeca ending at testes. 



29) Steganoderma formosum. 



Caeca and intest. 



Hippoglossus hippoglossus L. (Halibut). 



New genus and species: oreyavôç, coYereà; formosus, well formed. 

 2,6X0,81. Both ends regularly rounded, anterior the broader. Sur- 

 face covered with regularly disposed spines that from the surface 

 resemble scales. Suckers of equal size — the ventral one in most 

 cases a little more than one third from the anterior end. Small 

 pharynx, rather long oesophagus, and medium length caeca that end 

 at half the length or slightly more of the body. Ovary to the right 

 and overlapping the ventral sucker. Testes almost side by side at 

 the ends of the caeca. Uterus with brown eggs filling posterior end 

 and extending between testes to ventral sucker. Penis-sack crosses 



