TABLE OF CONTENTS. 



Page. 



Class I. Leptocardii 2 



Order A. Cirrostomi 2 



Family 1. Branchiostomatidae 7. 



1. Branch iostoma Costa 8 



1. lanceolatum Pallas. (Addenda) 3, 57, 867 



Class II. MarsipobrancMi 3 



Order B. Hyperotreta 4 



Family 2. Myxinidse 4 



2. Myxine L 4 



2. glutinosa L 5 



Family 2 (6). Bdellostomatidse. (Addenda) 967 



3. Polistotrema Gill. (Addenda) 5,867 



3. stoutiLock 6,57,867 



Order C. Hyperoartia 6 



Family 3. Petromyzontidse 6,867 



3 (6). Entosphenus GilL (Addenda) - 7,57,868 



4 (5, 6). tridentatus Gairdn 7,57,868 



4 (5). Ammoccetes Dum 9, 867 



Lampetra Gray 7,867 



7. plumbeus Ayres 8,867 



7 (ft), aureus Bean. (Addenda) 868 



$ Ammoccetes 9 



8. nigerKaf 9,867 



8 (b). appendix Dek. (Addenda) 868 



6 (7). PetromyzonL 10,867 



Ichfhyomyzon Grd 9, 867 



9. argenteus Kirt 10,867 



9 (6). MrudoGrd 868 



10. castaneusGrd 10,868 



$ Petromyzon 867 



11. ruarinus L. 11,868 



12. dorsatus Wild. (Addenda) 11,868 



Class III. Elasmobranchii 12 



r Subclass Selacliii 12 



Order D. Squall 12 



Family 4. Scymnidae 13 



8. Echinorhinus Blainv 14 



13. spinosus Gmel 14 



9. Somniosns LeS 14 



14. microcephalus Bloca 15 



Family 5. Spinacidae 15 



10. Centroscyllium M. & H 16 



15. fabricii Reinh - 16 



11. Squalus L 16 



16. acanthi as L 16 



12. Centroscymnus Boc. & Cap 17 



17. ccelolepis Boc. & Cap 17 



IX 



