160 THE HISTORY OF CREATION, 
SYSTEMATIC SURVEY 
Of the 4 Classes, 8 Sub-classes, and 21 Orders of Molluscs. 
Classes of Sub-classes of Orders of Systematic Name 
Molluscs. Molluscs. Molluscs. of the Orders. 
I. Molluscs without head or teeth: ACEPHALA or ANODONTODA. 
iz I. Ecardines i 1. Stalked 1. Lingulida 
Lamyp-shells Hinge-less 2. Flattened 2. Craniada 
Spirobranchia 
or 
Brachiopoda II. Testicardines { 3. Fleshy armed 3. Sarcobrachia 
Hinge-less 4. Calcareous-armed 4, Sclerobrachia 
nt III. Asiphonia 5. One-muscled 5. Monomya 
Z I Mussels without re- { 6. Uneven-muscled 6. Heteromya 
{ussels spiratory tubes 7. Even-muscled 7. Isomya 
or 
Blate-gills 
nn IV. Siphonida 8, Round-mantled 8. Integripalliata 
2 Mussels with respi- 9. Bay-mantled 9. Sinupalliata 
Phyllobranchia ratory tubes {2 Tube-mussels 10. Inclusa 
II. Molluscs with head and teeth: CEPHALOPHORA or ODONTOPHORA. 
V. Stump-headed 11. Tube-snails 11. Scaphopoda 
Perocephala {1 Butterfly-snails 12. Pteropoda 
III. 
Snails 13, With hind gills 13. Opisthobranchia 
Cochlides 14. With fore gills 14, Prosobranchia 
or VI. Large-headed 15. Swimming-snails 15. Heteropoda 
Gasteropoda Delocephala 16. Beetle-snails 16, Chitonoida 
17. Snails withlungs 17. Pulmonata 
VII. Chamber-Poulps (18. Pearl boats 18. Nautilida 
IV. with four gills iC Ammon’s horns 19. Ammonitida 
Cuttles Tetrabranchia 
or 
Boulps ; : 
VIII. Ink-Poulps with (20. Ten-armed 20. Decabrachiones 
Cephalopoda two gills 
Dibranchia 21. Eight-armed 21. Octobrachiones 
