i ce 
1923.) Liver and Kidney in Clarias and Saccobranchus. 113 
13. Chela 16. Anabas 
Family Notopteridae Family Sciaenidae 
4. Notopterus 17. Sciaena 
Order— Acanthopterigii 18. Seiaenoides 
Family Ophiocephalidae Order Plectognathi 
15. Ophiocephalus Family Gymnodontes 
Family Labyrinthici 19. Tetrodon 
Day’s (8) scheme of classification has been followed. 
For histological work the isthmus of the liver and that of 
the kidney with fairly large pieces of extra and intra-organs 
attached on either side were fixed either in Mann’s or Zenker’s 
fixatives. These were sectioned by the ordinary paraffin 
method. Sections stained with borax carmine an picro- 
water, and in which the slides were kept over-night This 
aso gave satisfactory results. 
til. Position anp Srrucrure oF THE LiveR AND 
Kip f 
. Clarias batrachus.—The average length of Clarias batra- 
chus is 20 em. but specimens often attain a length of 25 cm. 
ormore. The average length of the coelom in a full-grown 
Specimen is about 6 cm. and its breadth about 2 cm. 
e liver is divided into the usual two right and lett 
halves of equal dimensions and as shown in figure 3, lies 
inside the body cavity or coelom (Fig. 3, Cl). In Clarias 
neuhoffi on the other hand Weber (19) describes the main mass 
of the liver which lies in the body cavity to be divided very 
incompletely into right and left halves. The left extends with 
the dorsal lobe very far posteriorly, while the right is much 
smaller. To the last, the long gall bladder is attached as is 
also the case in Clarias batrachus. Each half of the liver of 
its outer and lateral side an 
structure about 6 mm. in 
tinued over what may be calle 
of the liver described above. Thus. where the muscles are 
