Plate 19
ATLANTIC COAST UNIVALVES
a. ANGULATE PERIWINKLE, Littonna angulifern Lam., 1 inch (Florida and West Indies), p. 133.
b. COMMON PERIWINKLE, Littonna lit- torea L., 1 inch (Labrador to New Jersey; Europe), p. 132.
c. MARSH PERIWINKLE, Littonna irrorata Say, 1 inch (New York to Texas), p. 132.
d. NORTHERN ROUGH PERIWINKLE, Littoriua saxntilis Olivi, '2 inch (Arctic New Jersey), p. 133.
e. ZEBRA PERIWINKLE, Littorina ziczac Gmelin, 1 inch (Florida to Texas and south), p. 132.
f. NORTHERN YELLOW PERIWINKLE, Littorina obtnsata Linne. '2 inch (Arctic to New Jersey), p. 133.
g. BEADED PERIWINKLE, Tectarius miiri- catus Linne, 1 inch (Florida Keys, south), p. 134.
h. FALSE PRICKLY-WINKLE, Ecliininus nodulosus Pfr., % inch (Florida Keys, south), p. 135.
i. COMMON PRICKLY-WINKLE, Nodilittorina tuberculata Mke., j^ inch (Florida Keys, south), p. 134.
j. SPOTTED PERIWINKLE, Littorina rneleagris Pot. and Mich., V.s incli (Florida Keys, south).
k. DWARF BROWN PERIWINKLE, Littorina mespilhini Miihlfeld, y^ inch (Florida Keys, south), p. 133.
1. STOCKY CERITH, CeritJiium literatum Born, I inch (Southeastern Florida and West Indies), p. 154.
m. FLY-SPECKED CERITH, Cerithium muscaruni Say, 1 inch (Florida and West Indies), p. 154.
n. FLORIDA CERITH, Cerithium floridanum Morch, ]/^ inches (North Carolina to Florida), p. 153.
o. DWARF CERITH, Cerithium variabile C. B. Adams, Yi inch (Florida to Texas, south), p. 154.
p. MIDDLE-SPINED CERITH, Cerithium algicola, C. B. Adams, 1 inch (Florida and West Indies), p. 154.
q. IVORY CERITH, Cerithium eburneum Brug., 1 inch (Southeastern Florida and West Indies), p. 154.
r. VARIABLE BITTIUM, Bittium varium Pfr., y^ inch (Maryland to Texas and Mexico), p. 155.
s. FALSE CERITH, Batillaria minima Gmelin, 3^ inch (Florida and West Indies), p. 153.
t. PLICATE HORN SHELL, Cerithidea pliculosa Menke, 1 inch (Florida to Texas, south-, p. 152.
u. COSTATE HORN SHELL, Cerithidea costata Da Costa, Ij inch (West Florida, south , p. 152.
v. GREEN'S MINIATURE CERITH, Cerithiopsis greeni C. B. Adams, ]4, inch (Massachusetts to West Indies, p. 157.
w. AWL MINIATURE CERITH, Cerithiopsis subulata Montagu, Y inch (Massachusetts to West Indies , p. 157.
x. LADDER HORN SHELL, Cerithidea scalarijormis Say, 1 inch (South Carolina to Florida, Cuba), p. 152.
y. BLACK-LINED TRIFORA, Triphora nigrocincta C. B. Adams, Y inch (Massachusetts, south), p. 159.
z. BEAUTIFUL TRIFORA, Triphora pulchella C. B. Adams, 34 inch (Florida, south), p. 159.
zz. MOTTLED TRIFORA, Triphora decorata C. B. Adams, Yi inch (Florida and West Indies), p. 159.
