RANGE OF SPECIES 
RANGE TO PANAMA 
Murex erinaceoides Simnia variabilis Vermicularia eburnea 
Coralliophila costata Cymatium gibbosum Aletes centiquadrus 
Epitonium hexigonum Potamides sculptum Turritella nodulosa 
RANGE TO ECUADOR, PERU, AND GALAPAGOS ISLANDS 
Acanthina lugubris Trivia sanguinea Aletes squamigerus 
Trivia radians Potamides sculptum 
RANGE TO GULF OF CALIFORNIA 
Murex rhyssa 
Murex gemma 
Murex santarosanus 
Murex festivus 
Purpura nuttallii 
Purpura v . aciculiger 
Purpura v. albescens 
Tritonalia gracillima 
Tritonalia v. obesa 
Tritonalia fusconotata 
Tritonalia poulsoni 
Tritonalia v. citrica 
Tritonalia michaeli 
Trophon pacifica 
Trophon tenuisculptus 
Trophon tripherus 
Thais lima 
Thais emarginata 
Acanthina v. punctulata 
Acanthina paucilirata 
Acanthina lugubris 
Forreria belcheri 
Epitonium evictum 
Epitonium crenimarginatum 
Epitonium retiporosum 
Epitonium crebricostatum 
Epitonium tiara 
Epitonium columbianum 
Epitonium californicum 
Epitonium diegense 
Janthina globosa 
Janthina exigua 
Melanella peninsularis 
Melanella lastra 
Melanella thersites 
Melanella grippi 
Melanella catalinensis 
Melanella micans 
Melanella rutila 
Melanella oldroydi 
Melanella hemphilli 
Melanella compacta 
Haliella abyssicola 
Niso hipolitensis 
Pyramidella adamsi 
Pyramidella mexicana 
Pyramidella mazatlanica 
Pyramidella achates 
Turbonilla aepynota 
Turbonilla kelseyi 
Turbonilla buttoni 
Turbonilla jewetti 
Turbonilla recta 
Turbonilla tenuicula 
Turbonilla auricoma 
Turbonilla heterolopha 
Turbonilla laminata 
Odostomia laxa 
Odostomia eugena 
Odostomia virginalis 
Odostomia sanctorum 
Odostomia pedroana 
[ 305 ] 
Odostomia navisa 
Odostomia hemphilli 
Odostomia aepynota 
Odostomia terricula 
Odostomia amianta 
Odostomia eucosmia 
Odostomia gloriosa 
Odostomia amilda 
Odostomia fetella 
Odostomia tenuisculpta 
Odostomia minutissima 
Simnia acicularis 
Simnia barbarensis 
Simnia uniplicata 
Trivia sanguinea 
Bursa californica 
Cymatium tremperi 
Trifora peninsularis 
Cerithiopsis oxys 
Cerithiopsis pedroana 
Cerithiopsis diomedae 
Cerithiopsis cosmia 
Seila montereyensis 
Alabina tenuisculpta 
Syncera translucens 
Bittium johnstonae 
Bittium v. montereyense 
Bittium serra 
Bittium oldroydi 
Potamides cyclus 
Trichotropis kelseyi 
[7 
