150 



Cjclostoma (Cyclosto- 



mus)microchasma 1856, 



( ) principalis . . 1859, 



( ) sarcodes .... 1856, 



f ) sinuatum . . 1855, 



(Cyclotus) bogo- 



tense 1855, 



-) daucinum . . 1856, 

 -) glaucosto- 



mum 1855, 



-) irregulare . . 1855, 

 -) lindstedti . . ia56, 



( ) macgilli\TaTi 1855, 



sordidum . . 1855, 

 (Leptopoma) barba- 



tum 1855, 



-) duplicatmn . 1856, 



H 



H 



banleyanum 1856, 

 signatum . . 1856, 

 -svallacei 1857, 



(Opisthoporus) co- 

 chinchmensis . . . 1856, 



( ) euiyompha- 



lum 1856, 



(Otopoma) listeri . . 1859, 

 Cyclostomus aimatonen- 



sis 1855, 



boivini 1856, 



fradatus 1854, 

 ienerii 1854, 



levis 1855, 



microchasma 1856, 



parvispirus 1854, 



sarcodes 1856, 



sinuatus 1855, 



Cyclostrema angulata . . 1850, 



canceUata 1850, 



cingidifera 1850, 



cobijensis 1850, 



elegans 1850, 



excavata 1856, 



graniUata 185-3, 



micans 1850, 



nitida 1850, 



nivea 1850, 



octolirata 1856, 



pentegoniostoma . . 1856, 



planą 1850, 



planorbula 1850, 



reeviana 1850, 



spirula 1850, 



sulcata 1850, 



( 1851, 



Cyclothurus didactylus < 1856, 

 1 1859, 



Cyclotus asperulus .... 1857, 



bairdianus 1857, 



Page 



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.339 



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117 

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103 

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104 

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 338 

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337 



337 

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105 



338 



303 



302 



118 



338 



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339 



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44 



41 



43 



42 



44 



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183 



44 



43 



42 



169 



169 



43 



43 



42 



42 



44 



219 



139 



450 



143 



145 



145 



Cyclotus bairdianus .... 1857, 



besvrickii 1857, 



birostratus 1854, 



bogotensis 1855, 



cbinensis 1854, 



eonicus 1860, 



corrugatior 1857, 



corrugatissimus. . . . 1867, 



corrugatus 1857, 



erassus 1857, 



cycloatus 1857, 



daucinus 1856, 



deburghaeanus .... 1857, 



dentistigmatus .... 1857, 



dubiosus 1857, 



duffianus 1857, 



gemma 1857, 



glaucostomus .... 1855, 



inutilis 1857, 



irregularis 1855, 



jamaicensis 1857, 



jugosus 1857, 



lindstedti 1856, 



macgilliTTayi 1855, 



montanus 1854, 



nodosus 1857, 



notatus 1857, 



noTse-spei 1857, 



noTus-saltus 1857, 



pallescena 1857, 



parrus 1857, 



perpallidus 1857, 



153 



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300 



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299 



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(143 



J 144 



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r 142 



J 143 



i 145 



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(145 



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337 



1145 



152 



1 146 



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1145 



1l49 



142 



1146 



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103 



1145 



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f 142 



J 143 



1l44 



(154 



(144 



h45 



(156 



391 



103 



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146 



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