Plate 23 

 ATLANTIC COAST UNIVALVES 



a. QUEEN CONCH, Strojnbus gigas L., 10 



inches (also young) (Florida Keys and 

 West Indies), p. 174. 



b. MILK CONCH, Stroinbiis costatiis Gmelin, 



6 inches (Southern Florida and West 

 Indies), p. 174. 



c. AMERICAN PELICAN'S FOOT. Aporr- 



hais occideriialis Beck, 2 inches (also 

 young) (off New England), p. 173. 



d. LONGLEY'S CARRIER-SHELL, Xeno- 



phora longleyi Bartsch, 7 inches (Gulf 

 of Mexico, south), p. 173. 



e. CARIBBEAN CARRIER-SHELL, Xeyw- 



phora caribaea Petit, 4 inches (off 

 Florida and Cuba), p. 173. 



f. GIANT TUN, Tojma galea L., 6 inches 



(North Carolina to Texas and West 

 Indies; Pacific), p. 199. 



g. CROSSE'S TUN, Eiidoliiim crosseamim 



Montero., 3 inches (off New Jersey to 

 West Indies), p. 199. 



h. WEST INDIAN CROWN CONCH. 



Melongeria melongejia L., 4 inches 

 (Florida Keys, south), p. 235. 



i. KNOBBED WHELK, Biisycon carica 

 Gmelin, 8 inches (Cape Cod, Massa- 

 chusetts to Northeastern Florida), 

 p. 235. 



j. NEW ENGLAND NASSA, Nassarius trivit- 

 tatus Say, % inch (Nova Scotia to South 

 Carolina), p. 239. 



k. PERVERSE WHELK, Biisycon perversiim 

 L., form eliceans Mont., 6 inches North- 

 eastern Florida), p. 236. 



1. CARIBBEAN VASE, Vasum miiricatum 

 Born, 4 inches (South Florida and West 

 Indies), p. 245. 



m. PYGMY COLUS, Coins pygmaea Gould, 



1 inch (Quebec to off North Carolina), 

 p. 229. 



n. CHANNELED WHELK, Biisycon canalicii- 

 latum L., 6 inches (Cape Cod to North- 

 eastern Florida), p. 236. 



o. LIGHTNING WHELK, Busycon contra- 

 rinm Conrad, 8 inches (South Carolina 

 to Texas), p. 236. 



p. EASTERN MUD NASSA, Nassarius ob- 

 soletus Say, % inch (Quebec to North- 

 eastern Florida), p. 240. 



q. COMMON EASTERN NASSA, Nassarius 

 vibex Say, J/^ inch (North Carolina to 

 Texas, south), p. 237. 



r. VARIABLE NASSA, Nassarius ambiguus 

 Pult., Yi inch (North Carolina to West 

 Indies), p. 239. 



s. BROWN-CORDED NEPl UNE, Neptunca 

 clecemcostata Say, 3 inches (Nova Scotia 

 to Massachusetts), p. 229. 



t. HAIRY COLUS, Coins pubescens Verrill, 



2 inches (Quebec to off North Caro- 

 lina), p. 229. 



u. FAT COLUS, Coins ventricosus Gray, 2V2 

 inches (Nova Scotia to New York), not 

 in text. 



V. EMPEROR HELMET, Cassis madagas- 

 cariensis Lam., 9 inches (Southeastern 

 Florida and West Indies), p. 193. 



w. LONGHORNED SMOKE SHELL. Typhis 

 longicornis Dall, ]/! inch (Florida and 

 West Indies), not in text. 



X. STIMPSON'S COLUS, Coins siimpsoni 

 Morch, 4 inches (Labrador to off North 

 Carolina), p. 227. 



y. FLORIDA HORSE CONCH. Pleiiroploca 

 gigantea Kiener, 20 inches (North Caro- 

 lina to Florida), p. 242. 



