MOLLUSCA
| Class | Order | Sub-order | Section | |
| CEPHALOPODA | Dibranchiata | Octopoda (p. [382]). | Phragmophora (p. [386]). | |
| Sepiophora (p. [388]). | ||||
| Decapoda | Chondrophora | Myopsidae (p. [389]). | ||
| Oigopsidae (p. [390]). | ||||
| Tetrabranchiata | Nautiloidea | Retrosiphonata (p. [393]). | ||
| Prosiphonata (p. [395]). | ||||
| Ammonoidea | Retrosiphonata (p. [397]). | |||
| Prosiphonata (p. [397]). | ||||
| GASTEROPODA | Amphineura | Polyplacophora (p. [400]). | ||
| Aplacophora (p. [404]). | ||||
| Prosobranchiata | Diotocardia | Docoglossa (p. [405]). | ||
| Rhipidoglossa | Zygobranchiata (p. [406]). | |||
| Azygobranchiata (p. [407]). | ||||
| Monotocardia | Ptenoglossa (p. [411]). | |||
| Taenioglossa | Platypoda (p. [411]). | |||
| Heteropoda (p. [420]). | ||||
| Taenioglossa | ||||
| Gymnoglossa (p. [422]). | ||||
| Toxoglossa (p. [426]). | ||||
| Tectibranchiata | Bulloidea (p. [429]). | |||
| Aplysioidea (p. [430]). | ||||
| Pleurobranchoidea (p. [431]). | ||||
| Siphonarioidea (p. [431]). | ||||
| Opisthobranchiata | Ascoglossa (p. [431]). | |||
| Nudibranchiata | Cladohepatica (p. [432]). | |||
| Holohepatica (p. [433]). | ||||
| Pteropoda | Thecosomata (p. [435]). | |||
| Gymnosomata (p. [437]). | ||||
| Pulmonata | Basommatophora (p. [438]). | |||
| Stylommatophora (p. [439]). |
| Class | Order | Suborder |
| SCAPHOPODA (p. [444]). | ||
| PELECYPODA | Protobranchiata (p. [447]). | |
| Filibranchiata | Anomiacea (p. [448]). | |
| Arcacea (p. [448]). | ||
| Mytilacea (p. [448]). | ||
| Pseudolamellibranchiata (p. [449]). | ||
| Eulamellibranchiata | Submytilacea (p. [451]). | |
| Tellinacea (p. [453]). | ||
| Veneracea (p. [454]). | ||
| Cardiacea (p. [454]). | ||
| Myacea (p. [456]). | ||
| Pholadacea (p. [457]). | ||
| Anatinacea (p. [458]). | ||
| Septibranchiata (p. [459]). |
BRACHIOPODA
| Order | Family | |
| Brachiopoda | Ecardines | Lingulidae (pp. [487] and [503]). |
| Obolidae (p. [504]). | ||
| Discinidae (pp. [487] and [504]). | ||
| Craniidae (pp. [487] and [504]). | ||
| Trimerellidae (p. [504]). | ||
| Testicardines | Productidae (p. [504]). | |
| Strophomenidae (p. [505]). | ||
| Koninckinidae (p. [505]). | ||
| Spiriferidae (p. [505]). | ||
| Atrypidae (p. [505]). | ||
| Rhynchonellidae (pp. [487] and [505]). | ||
| Terebratulidae (pp. [487] and [506]). | ||
| Argiopidae (p. [506]). | ||
| Stringocephalidae (p. [506]). | ||
| Thecidiidae (pp. [487] and [506]). |
LIST OF MAPS
| The Geographical Distribution of the Land Operculate Mollusca | [Frontispiece] |
| The Geographical Distribution of the Land Mollusca of the East Indian Archipelago | [Between pp. 308 and 309] |
| The Relations of the Land Mollusca of New Guinea with those of North Australia | [To face p. 322] |
| The Geographical Distribution of the Land Mollusca of the West Indies | [Between pp. 344 and 345] |