VI 



CONTENTS 



Tho Norilidii' or Sea-Snaila . 

 Tlio I'aliidiiiiiliu or Uivcr-Snails 

 Tho Naticidii- 

 Tlio laiUliinidiv 

 TliL>(\»lyi>tniid;i' . 

 Tlio Haliotida- or Kar-Sholls 

 Tho Fissurellida- . 

 Tlie PatoUida' or Limpets . 

 Tlio Cliilonid.v 



Tho Dentaliidic or Tooth-Shells 

 Tho ()i>isthol>ranohiata 



Tho Doridiu or Sea-Lemons 



The Triton iida- 



The .Eolididic . . . . 



The Plourobranchida^ . 



The Aplvsiadio . . . . 



The Bursatellida' . 



Tho Bullidie or Bubble-Shells . 



Orders. HETEROPODA 



The Sagillidaj . . . . 



The Firolidae 



The Atlantida:' . . . . 



Class III. PTEROPODA 



Order 1. THECOSOMATA . 

 Order 2. GYMNOSOMATA 



Class IV. PALI^IOBRAiVCHIATA, 



519 



Class V. I.A?IEI.I.IBRA^CmATA, 



519 

 Order 1. SIPHONATA .... 520 



The Veueracea 520 



The Mactridai or Beach-Clams . . 521 

 The Myadaj or Long-Clams . . .521 

 The Cardiacea or Cockles ... 522 

 The Chamacea or Giant-Clams . .522 



Order 2. ASIPHONATA .... 523 



The Unionacea or Fresh-Water Clams . 523 



The Mytilacea or Mussels . . . 524 



The Arcacca ... . 524 



The Aviculacea or Pearl-O.vsters . 524 



The Pectinidaj or Scallops . . . 526 



The Ostracea or Oysters . , . 527 



Class VI. TUWICATA . .530 



Order 1. BIPHOEA 530 



Order 2. ASCIDLE 530 



Class VIII. BRYOZOA 531 



Order 1. LOPHOPODA . . . .532 



Order 2. INFIINDIBUIATA ... 532 



Order 3. HYMENOPTEEA . , . 556 



The Petiolata 557 



The Anthophila or Bees . . . 557 



The Diploptera or Wasps and Hornets . 563 



The Fossoria 564 



The Heterogyna or Ants . . . 566 



The Entomophaga .... 567 



The Gallicola or Gall Insects . . 568 



The Securifera 569 



Order 4. LEPIDOPTEEA . . . .570 



The Rhopaloccra or Butterflies . . 572 



The Heterocera or Moths . . . 574 



The Sphingina 574 



The Psychidffi 575 



The Bombycina . . . . 575 



The Noctuina 579 



The Geometrina or Measuring-Worms 579 



The Pyralidina 580 



The Tortricina 580 



The Tineina 580 



Order 5. DIPTEKA 580 



The Culicidaj or Gnats . . . .580 



The Tipulidaj 581 



The CEstrida; or Bot and Horse Flies . 581 



The Muscidaj or Flies . . . 582 



The HippoboscidiE or Forest-Flies . 583 



Order 6. APHANIPTEKA ... 583 



Order 7. NETIROPTERA . . .583 



The Phryganeidaj .... 583 



