HT Le 
Trophon (Pascula) citricus, id., 
Murex (Tritonalha) diomedæus, Panama, 
Epitonium (Ferminoscala nov. subg.) ferminianum, id., 
— — brunneopictum, Basse-Californie, 
— (Stenorhytis) turbinum, Galapagos, 
Tritonoharpa (nov. gen.)vexillata, id., 
Bursa (Lampadopsis) calcipicta, ile des Cocos, 
Oücorys rotunda, Panama, 
—  elevata, Pérou, 
Cerithioderma pacifica, Panama, 
Seguenzia occidentalis, Acapulco, 
— stephanica, Mazatlan, 
Petaloconchus complicatus, île des Cocos, 
Turritella mariana, iles Las Tres Marias, 
Architectonica radialis, Panama, 
Capulus chilensis, Chili, 
Hipponyx delicata, Panama, 
Natica (Cochlis) othello, id., 
— — scethra id., 
Polinices (Euspira) aguyanus, Pérou, 
— —  crawfordianus, Panama, 
= —  pardoanus, id., 
— —  vaginalus, détroit de Magellan, 
— —  constrictus, id., 
-- —  litorinus, Galapagos, 
_ —  strebeli, Chili, 
Bathysciadium pacificum, Pérou, 
Cocculina agassizii, Panama, 
— nassa, id., 
— diomedae, id., 
Leptothyra panamensis, id., 
Liotia (Arene) californica, Basse Californie, 
— — pacs, id., 
Clanculus (Panocochlea mov. subg.) rubidus, Panana, 
Solariella galapagana, Galapagos, 
— equatorialis, Equateur, nn. Spp. 
