INDEX. 



For the purposes of this index subgenera and varieties are treated as genera and species, but the 

 species of any genus will usually be found assembled under the generic and not the subgeneric name. 

 Names of groups and species first published in this work are in italics. The page number indicating 

 the place where a diagnosis or synonymy is given, or where important information is to be found, is in 

 italics; a single reference or casual mention is indicated by Roman numerals. 



Acar (sec- Area) 615, 616, 629. 

 Acesta 765. 

 Achatina 572. 

 Achatium 572. 

 Acila 372, 573. 



castrensis 572. 



Cobboldiie 573. 



( 'onradi 573. 



corJata 573. 



ducisa 573. 



ilivaricata 572 



Krraani 572. 



Fultoni 572. 



insignis 572. 



jafonica 572. 



Lyalli 572. 



mirabilis 572. 



Schomburgki 573. 



truncata 573. 



tuberculata 573. 

 Actinomya 832. 

 Adesmacea 812. 

 Adrana (ste Leda.) jSo, 592. 

 Adula 799. 

 Enigma 772. 

 /Equipecten 6yj, 696, 705, 713, 



7'4, 732. 733. 734- 

 Agina 834, 836, 837. 



purpurea 834. 

 Alectryonia 672. 

 Aligena 928. 



x'quata 928. 



fustulosa 928. 



Aloidis 836, SjS, 843, 844, 845, 

 846, 849, 850, 852, 853. 



guineensis 838. 

 Amphidesma 908, 912. 

 Amusium 692, 693, 6yS, 699, 



744, 745, 755- 

 Dalli 698. 



Amusium, cont'ii. 



Lyoni 693, 698, 745, 7/9. 



magnum 726. 



Mortoni 718, 719. 



ocalanttm 745. 



papyraceum 718. 



squamulum 757. 



testiulinarium 726. 

 Amussiopecten 699. 

 Amygdalum 790. 



dendriticum 790. 

 Anadara (see Area) 617, 618, 6/y, 



636, 6J3, 65*. 

 Anapa 909, 913. 



Smithii 909, 913. 



tri<[uetra 913. 

 Anapella 913. 

 Anatifera 572. 

 Anatina 837, 906. 



pellucida 906. 

 Anatinacea 827. 

 Anatinella Syo, 891. 



dilatata 890. 



nicobarica 890. 



Sibbaldii 890. 

 Anatinellina; 874, 890, 891. 

 Anatium 572. 



Anisorhynchus 836, Sjy, 840. 

 Anisothyris 836, 837, 839, 840, 



853, 854, 



obliqua 839. 



Anomalocardia 619,636, 643, 658. 

 Anomalomya 810. 

 Anomia 769, 772, 773, 774, 775, 

 781, 782, 783. 



acontes 784. 



aculeata 779, 784. 



zenigmatica 774. 



Conradi 784. 



delumbis 785. 



Anomia, tont'ii. 



electrica 784. 



elyros 774. 



ephippioides 781, 782, 783. 



i-pliippitim 774, 784. 

 JloriJana 783. 



glal>ra 784. 



g^yphus 673, 67.1. 



iiijfdsa 783. 



jugosa 782. 



lampe 785. 



limatula 785. 



lisbonensis 781. 



macroschisma 780. 



McGeei 782. 



mitrogrammata 783. 



navicelloides 782. 



placenta 772. 



Ruflini 182, 783. 



simplex 784. 



squamula 784. 



subcostata 780, 783. 



umbonata 783. 

 Anomiaceie 769. 

 Anomiidas 769, 776, 779. 

 Anomya 781. 

 Anonica 668. 

 Anticorbula 839. 

 Area 6fj, 616, 864. 



actinophora 647. 

 Adamsi 615, 629, 659. 

 a-quicostata 644. 



/ 645. 



alcima 635. 

 AMrichi 630. 



americana 650, 651 , 652, 659. 

 antillarum 636. 

 antiquata (117, 619. 

 aquila 621. 



931 



