SCHEME OF THE CLASSIFICATION 



xxi 



PHYLUM IX. MOLLUSCA 243 



PAGE 



Class I. AMPHINEURA . .251 

 Order i . POLYPLACO- 



PHORA . .251 



" 2. APLACOPHORA . 252 



Class II GASTROPODA . . 252 



Subclass I. Streptoneura . 258 



Order i. ASPIDOBRAN- 



CHIA . . . 258 

 " 2. PECTINIBRAN- 



CHIA . . . 258 



Subclass II. Euthyneura . . 258 

 Order i . OPISTHOBRAN- 



CHIA . . . 258 



Order 2. PULMONATA . 258 



Class III. SCAPHOPODA . . 261 



Class IV. PELECYPODA . .261 



Order i. PROTOBRAX- 



CHIA . . . 262 



" 2. FlLIBRANCHIA . 262 



" 3. EULAMELLI- 



BRANCHIA . 262 

 " 4. SEPTIBRANCHIA 262 



Class V. CEPHALOPODA . . 264 

 Order i. TETRABRAN- 



CHIA . . 268 



" 2. DlBRANCHIA 268 



PHYLUM X. ARTHROPODA 



Class I. CRUSTACEA . . 



Subclass I. Branchiopoda 



Order i. PHYLLOPODA 



" 2. CLADOCERA 

 Subclass II. Ostracoda 

 ; ' 3. Copepoda . 

 " 4. Cirripedia 

 " 5. Malacostraca 

 Order i . NEBALIACEA 

 " 2. ANASPIDACEA 

 " 3. MYSIDACEA . 



" 4- CUMACEA . 



" 5. TANAIDACEA 



" 6. ISOPODA . . 



" 7. AMPHIPODA 



" 8. EUPHAUSIACEA 297 



" 9. DECAPODA . . 297 



Suborder i . Nat ant ia 297 



2. Reptantia 297 



" 10. STOMATOPODA . 297 



Class II. ONYCHOPHORA . 305 



Class III. MYRIAPODA . .308 



2 7 6 

 292 

 292 

 294 

 294 

 294 

 294 

 294 

 294 

 294 

 294 

 294 

 297 

 297 

 297 



Order i . PAUROPODA 



" 2. DIPLOPODA . . 



" 3. CHILOPODA . . 



" 4 SYMPHYLA . . 



Class IV. INSECTA . . . 



Order i. APTERA . . . 



" 2. EPHEMERIDA . 



" 3. ODONATA . . 



" 4. PLECOPTERA . 



" 5. ISOPTERA . . 



" 6. CORRODENTIA . 



" 7. MALLOPHAGA . 



" 8. THYSANOPTERA 



" 9. EUPLEXOPTERA 



" 10. ORTHOPTERA . 



" 11. HEMIPTERA 



" 12. NEUROPTERA . 



" 13. MECOPTERA 



" 14. TRICHOPTERA . 



" 15. LEPIDOPTERA . 



" 1 6. DlPTERA. . . 



" 17. SlPHONAPTERA 



274 



309 



39 

 310 



3H 

 312 



337 

 338 

 339 

 340 

 340 



342 

 342 

 343 

 345 

 349 

 349 

 35 

 35 

 356 



359 



