SYSTEMATIC INDEX. 



Pages 



MALACOZOA. MOLLUSCA, i3 



CLASS I. CEPHALOPODA, . 20 



ORDER T. CEPHALOPODA CRYPTADIBRAN- 



CHIATA, . . . . 22,26 



FAMILY I. SEPIINA, . . 22,26 



SECTION I. DECACERATA, . 22,26 



1. Sepiola. Sepiole, , . . . 22,26 



1. Sepiola Eondeletii. Commo a Sepiole, . . 22,27 



2. Sepia. Cuttle, . , . . 22,28 



2. Sepia officinalis. Common Cuttle, . , 22, 29 



3. LoLiGO. Calmart, . . . . 22,29 



3. Loligo \Tilgaris, Common Calmary, . . 22, 29 



SECTION II. OCTOCERATA, . 2.3,31 



4. Eledoxe. Eledoxe, . . . . 23,31 



4. Eledone Penuantii. Pennant's Eledone, . 23, 31 



5. Eledone Aldi'ovandi. Aldi-ovandus's Eledone, . 23, 32 



ORDER II. CEPHALOPODA SIPHONIFERA, 23,33 



ORDER III. CEPHALOPODA FORAMINIFERA, 32, 33, 31.5 



FAMILY I. DISCORBIXA, . 31.5 



5. Poltstomella. Polystomella, . . . 23,33,315 



6. Polystomella crispa. Crenated Polystomella, . 23,33,315 



7. Polystomella Gulielminffi. Williamina's Polystomella, 315 



8. Polystomella crenulata. Crenulated Polystomella, 316 



9. Polystomella umbilicatula. Umbilicated Polystomella, 317 



10. Polystomella nautilina. Nautiline Polystomella, 3)7 



11. Polystomella depressula. Smooth Polystomella, 318 



6. NUMMTILINA. NUMMULINE, . . . 24,34,318 



12. Nummulina marginata. Margined Nvimmuline, 24, 34, 318 



7. DiscoRBis. DiscoRBis, . . . .24, 34, 318 



13. Discorbis lobatulus. Lobulate Discorbis, . 24,34 



Var 1). lobatulus reversus. Reversed, . 24, ."35 



14. Discorbis pulchellus. Delicate Discorbis, . 318 



