Sp. 



reticularis 44 



reticulatus ,..165 



Ricinus 51 



Rosarium 8 



Rubecula 42 



rufus 134 



Sacellum 20 



saxatilis 18 



Scala 101 



Scolopax 3 



Scolymus 115 



Scorpio. ...V. 17 



Scriptus 141 



Scrobiculator 43 



semigranosus 162 



senticosus 58 



septangularis 132 



serratus 158 



sexcostatus 109 



sinistralis 171 



sinuosus 135 



Spengleri 38 



spinosus 22 



Spirillus 81 



stramineus 62 



striatulus 74 



subantiquatus 94 



subulatus 168 



Syracusanus 119 



Ternatanus 116 



tornatus 69 



torulosus 155 



Trapezium 112 



Tribulus 4 



tripterus 15 



triqueter 16 



Tritonis 95 



Trunculus 7 



Tuba 80 



INDEX. 



Sp. 



tubercularis 166 



Tulipa 98 



Turricula 133 



verrucosus 77 



versicolor 76 



Vertagus 143 



Vespertilio 114 



virgatus 104 



virgineus 66 



Virgo 63 



uncinatus 150 



undatus" 103 



vulpinus 96 



MYA. page 10. 



anatina 6 



arctica 8 



arenaria 2 



Batava 25 



bidentata 16 



convexa. 3 



corrugata 31 



crassa 28 



declivis 4 



decussata 17 



distorta 15 



dubia 23 



edentula 9 



ferruginosa 19 



globosa 7 



Glycimeris 41 



iuEequivalvis 40 



labiata 39 



margaritifera 30 



membranacea 14 



Nicobarica 11 



nitens 20 



nitida 24 



nodosa 34 



p 



201 



Sp. 



nodulosa 29 



Norwegica 13 



ovata 27 



picea 10 



Pictorum 26 



praetenuis 5 



prismatica 21 



purpurea .18 



radiata 32 



rostrata 12 



rugosa 33 



spuria 35 



suborbicularis 37 



substriata 22 



syrmatophora 36 



truncata 1 



variabilis 38 



MYTILUS. page 56. 



Ala-corvi 44 



Anatinus 33 



arborescens 13 



aristatus 8 



Avonensis 34 



bidens 28 



bilocularis 17 



Camellii 46 



Canaliculus 47 



coralliophagus 10 



Crista-galli 1 



Cygneus 32 



demissus 30 



discors 39 



discrepans 38 



dubius 36 



edulis 21 



elongatus 25 



exustus 18 



Faba 41 



