83 Orthis inflata, Janus. 53 



84 Orthis laticostata, James. 84 



85 Orthis lynx, Von Bicch. 85 



86 Orthis disparilis, Conrad. 86 



87 Orthis dentata, Pander. 87 



88 Orthis emacerata, //#//. 88 



89 Orthis insculpta, //#//. 89 



90 Orthis occidentals, //a//. 90 



91 Orthis retrorsa, Salter. 91 



92 Orthis scovilli, ,5". A. Miller. 92 



93 Orthis sinuata, Hall. 93 



94 Orthis subquadrata, Hall. 94 

 • 95 Orthis testudinaria, var. jugosa, James. 95 

 ' 96 Rhynchonella capax, Conrad. 96 



Syn. R. increbescens, //#//. 



97 Rhynchonella dentata, Hall. 97 



98 Schizocrania filosa, Hall. 98 



99 Stieptorhynchus elongatus, James. 99 



100 Streptorhynchus filitextus, Hall. 100 



101 Streptorhynchus neglectus, James. 101 



102 Streptorhynchus nutans, James. 102 



103 Streptorhynchus subtentus, Conrad. 103 



104 Streptorhynchus planumbonus, Hall. 104 



105 Streptorhynchus sulcatus, Vemeuil. 105 



106 Streptorhynchus vetustus, James. 106 

 • 107 Strophomena alternata, Conrad. 107 



108 Strophomena alternistriata, Hall. 108 



109 Strophomena camerata, Conrad. 109 

 no Strophomena loxorhytis, Hall. no 

 in Strophomena nasuta, Conrad. in 



1 1 2 Strophomena philomela, Billings. 112 



113 Strophomena rhomboidalis, Wilckens. 113 



114 Strophomena tenuilineata, Conrad. 114 



115 Strophomena tenuistriata, Sowerby. 115 



116 Trematis millepunctata, //a//. 116 

 XI 7 Zygospira cincinnatiensis, James. 117 



-118 Zygospira headi, Billings. 118 



• 119 Zygospira modesta, Say. 119 



Sub-King. Mollusca, Class — Gasteropoda. 



120 Bellerophon bilobatus, Sowerby. 120 



121 Bucania expansa, Hall. 121 

 - 122 Cyclonema bilix, Hall. 122 

 •123 Cyclonema fluctuatum, James. 123 



124 Cyclonema phaedra, Billings. 124 



125 Cyclora minuta, Hall. 125 



126 Cyrtolites dyeri, Hall. 126 



127 Cyrtolites ornatus, Conrad. 127 



128 Murchisonia bellacincta, Hall. 128 



1 29 Murchisonia gracilis, Hall. 1 29 



130 Murchisonia milleri, Hall. 130 



_Syn^M. . bicincta, Hall. 



