VIII TABLE OF CONTENTS. 



Page. 



Turbonilla(Pyrgiscus) histias 105 



subula 106 



wickhami 106 



lara 107 



cinctella 108 



adusta 108 



larunda 109 



Subgenus Mormula 110 



Key to the S])ecie8 of the subgenus Mormula 110 



Turbonilla (Mormula) lordi Ill 



regina 112 



catalinensis 113 



eschscholtzi 113 



tridentata 114 



ambusta 115 



major 116 



santosana 117 



pentalopha 117 



heterolopha 118 



ignacia 119 



periscelida 119 



phalera . _ _ 120 



Subgenus Dunkeria 120 



Key to the species of the subgenus Dunkeria 121 



Turbonilla (Dunkeria) sedillina 121 



laminata 122 



hipolitensis 123 



excolpa 123 



subangulata 124 



andrewsi 124 



arata 125 



genilda 125 



Subgenus Pyrgisculus 126 



Key to the species of the subgenus Pyrgisculus 126 



Turbonilla (Pyrgisculus) nionilifera. 126 



cancellata 127 



festiva 127 



eucosmia 128 



paucilirata 129 



swani 129 



Subgenus Asmunda 129 



Turbonilla (Asmunda) turrita 130 



Subgenus Careliopsis 130 



Turbonilla (Careliopsis) stenogyra 130 



Genus Odostomia 131 



Key to the subgenera of Odostomia 131 



Subgenus Lysacme 132 



Odostomia ( Lysacme) clausiliformis 132 



Subgenus Salassiella 133 



Key to the species of the subgenus Salassiella 133 



Odostomia (Salassiella) laxa 133 



richi. .' 133 



Subgenus Salassia 134 



