MITRIDZ. 171 
Drsapuus, Philippi. 
Distr.—D. Philippii, Crosse (lv,47). Polynesia, Mauritius. 
Subeylindrical, covered with a thin epidermis, transversely 
sculptured ; spire acute; aperture narrow, linear; columella 
without plaits, narrowed and turned to the left at base; outer 
lip thickened, rectilinear, abruptly truncated and reeurved at 
the base. 
Differs from Mitroidea in the columella being without plaits. 
It resembles in general form Conus mitratus,as well as more 
distantly Strombus terebellatus, and formerly had a position 
between Conus and Mitra, but the animal does not differ from 
Mitra. Like that genus, when plunged living into aleohol it 
yields a fine purple dye. 
TurRicuLA, Klein. 
Syn.—Callithea, Swains. Vexillum, Bolt. Tiara, Swains. 
Vulpecula, Blainv. 
Distr.—162 sp. Exclusively tropical and subtropical, its 
metropolis being Central Polynesia. 1. plicaria, Linn. (lv, 48). 
Shell elongated, turreted, longitudinally plicately ribbed ; 
spire acuminated; aperture narrow; columella with numerous 
plaits ; outer lip internally striated. 
COSTELLARIA, Swainson. Shell smaller, with elevated spire, 
body-whorl anteriorly contracted, slightly ventricose in the 
middle, aperture sometimes striated within. 7. exasperata, 
Chemn. (lv, 49). 
pusio, Swains. Shell small, ovate, more or less ribbed or 
nodulous, spire usually short, convex, with obtuse apex; outer 
lip sometimes thickened. 7. luculenta, Reeve (lv, 50). 
LAPPARIA, Conrad. Uncharacterized. 7. dwmosa, Conrad 
(lv, 51). Eocene; Jackson, Miss. 
Cyninpra, Schum., 1817. 
Distr.—8 sp. Red Sea, Indian Ocean, China, Philippines, 
Polynesia, Mauritius. C. fenestrata, Lam. (lv, 52). 
Shell oliviform, subcylindrical ; spire conical; aperture linear; 
columella straight, with several oblique anterior plaits ; outer lip 
thickened, smooth within. 
ImpricariA, Schum., 1817. 
Syn.—Coneelix, Swains. 
Distr.—9 sp. Philippines, Polynesia. J. marmorata, Quoy 
lv, 53°. 
Shell coniform, often covered with an epidermis; spire de- 
pressed conical, apex mucronate; aperture linear; columella 
straight, with numerous transverse imbricated plaits in the 
middle; outer lip thickened. 
