INTESTINAL GANAL OF THE ICHTHTOPSIDA. 409 



Figs. 8 to 14 are drawn to the same natural size, proportionate to the trans- 

 verse diameter of the base of the valved intestine. 



Plate I. 



Fig. 1. Eaia clavata, adult 5- '^^^ cloaca and terminal portion of the 

 intestinal canal, with related arteries, dissected from the side, after 

 injection with French blue, f nat. size. 



2. R. clavata. To show the origin and relationships of the paired cloaeal 



arteries. | nat. size. 



3. Baiia temporaria, 5- A similar dissection to iag. 1. The arteries 



represented are a combination of those observed for four indi- 

 viduals referred to in the text. X 2. 



4. Sana temporaria, ^ . To show the base of the inferior mesenteric 



artery, in an individual specimen described in the text. X 2. 



5. Salamandra maculosa, § . Comparison dissection to figs. 1 & 3. X 2. 



6. Salamandra maculosa, (^ , showing two inferior mesenteric trimks. 



X2. 



7. To represent the dorsal aorta and the origin of the coeliac and mesen- 



teric arteries in relation to the same in — -i. Salamandra muculosa ; 

 ii. Haia clavata ; iii. Mitstelus antarcticus (after Parker [27]) ; iv. 

 Scyllium canicula ; v. Acanthias vulgaris. 



Plate II. 



Fig. 8. The appendix digitiformis, with its related parts, in median longitu- 

 dinal section, in Zygcsna malleus. 

 9. The same, in Eaia clavata. 



10. The same, in Lcemargus horealis. 



11. The same, in Scyllium canicula. 



12. The same, in Ccstracion fhilippi. 



13. The same, in Acanthias vulgaris. 



14. The same, together with a portion of the valved intestine, in Notidanus 



{Hepitanchiis) cinereus. 



15. The same, in Ehina squatina ; external view. Nat. size. 



16. The ca3cum and adjacent portions of the alimentarj'- viscera, in Box 



vulgaris. X 2. 



17. The head of the large intestine of Cyclopterus lumpus (juv.), as seen 



from the right side. X 2. 



Eeference letters. 



a.c. Coeliac artery. 

 a.cd. Caudal artery, 

 a.cm. Coeliaco-mesenteric artery. 



a.g. Genital (ovarian) arteries, 



a.i. Iliac arteries. 

 a.im. Inferior mesenteric arteries. 

 ao. Dorsal aorta. 



