IRREGULAR CELLS IN SPINAL CORD OF FISHES 
List of fishes examined 
First group 
. Alewife, Pomolobus pseudoharengus 
. Eel, Anguilla chrysypa 
. Minnow, Fundulus heteroclitus 
. Toadfish, Opsanus tau 
Hm WDD 
Second group 
5. Butterfish, Rhombus tricanthus 
6. Catfish, Amiurus nebulosus 
7. Cunner, Tautogolabrus adspersus 
8. Dogfish, smooth, Mustelus canis 
9. Dogfish, spiny, Squalus acanthias 
10. Garpike, Lepidosteus osteus 
11. Goosefish, Lophius piscatorius 
12. Mackerel, Scomber scombrus 
13. Menhaden, Brevoortia tyrannus 
14. Puffer, Sphaeroides maculatus 
15. Sand-dab, Bothus maculatus 
16. Sandshark, Carcharias littoralis 
17. Sead, Decapterus sp. 
18. Sculpin, Acanthocottus sp. 
19. Scup, Stenotomus chrysops 
20. Sea-robin, Prionotus carolinus 
21. Shark-sucker, Echeneis naucrates 
22. Swordfish, Xiphius gladius 
23. Sting-ray, Dasyatis sp. 
24. Tomcod, Microgadus tomcod 
25. Torpedofish, Torpedo sp. 
26. Tautog, Tautoga onitis 
27. Whiting, Melucius bilinearis 
28. Winter flounder, Pseudopleuronectes americanus 
Third group 
29. Summer flounder, Paralichthys dentatus 
30. Skate, Raia 
Barndoor skate, Raia laevis 
Italian skate, Raia punctata 
Spiny skate, Raia radiata 
Summer skate, Raia erinacea 
Winter skate, Raia ocellata 
Other forms examined 
Horseshoe crab, Limulus polyphemus 
Lobster, Homarus americanus 
Lamprey, Petromyzon sp. 
American newt, Diemyctylus viridescens 
Mud-puppy, Necturus sp. irs, 
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