OF SOUTHERN INDIA. 455 
Volutomitra pyruliformis differs from our Vol. canaliculata in having the posterior 
edge of the whorls constricted, not regularly canaliculated. 
ce. Sub-fSamily,—MITRINZ, p. 101. 
Mitroidea, Pease, Proc. Zool. Soc., 1864, p. 514, is characterized as a new 
genus, distinguished by an anteriorly truncated columella with numerous folds. 
Another form is described in Am. Jour. Conch., III, 1867, p. 211, as Witropsis, by 
the same author. 
Conrad quotes several species of uzrrivaz (Am. Jour. Conch., I, 1865, pp. 24 
and 25, and subsequently in other publications) as Lapparia, Con., Fusimitra, Con., 
Conomitra, Con., and others. 
IX. Family,—FASCIOLARIIDZ, p. 105. 
a. Sub-family,—TURBINELLINZ, p. 105. 
Hazalina, Con., Am. Jour. Conch., 1865, I, p. 238. 
b. Sub-family,—FASCIOLARIIN 2. 
(FascroLARIACEA, Troschel, Geb. d. Schnecken, IT, p. 60). 
Stimpson (Am. Jour. Conch., I, 1865, p. 59), proposes a distinct family, 
Prvycwarractip#, for a new genus, Ptychatractus, the species Pt. ligata, Mighels, 
having a shell and operculum like Fasciolaria, but the dentition is said to resemble 
that of the Purevrerps. I am afraid there will be no end of families necessary 
if they are to be based solely upon the dentition of the animals. 
Conrad (Am. Jour. Conch., 1867, III, p. 186) proposes a name Fusciolina 
for a species with only one median columellar plait, but. of fusiform shape, like 
Fasciolaria. Voluta (Volutilithes) acuta, Sow., from the Gosau-deposits has pro- 
bably to be placed in this genus, as it has only one but rather anterior columellar 
fold. 
Laube (Denksch. Akad., Wien, 1868, vol. XXVIII, Fauna der St. Cassian- 
Schichten, p. 32) has two interesting species from triassic beds, Fasciolaria Karreri 
and Fasc. avena, Laube; both these species much resemble in the formation of 
the anterior folds of the columella some of the Caycrerztarups, especially Derica 
and Narona. 
Meek (Check list eret. fossils of N. America, 1864, p. 21) quotes in the family 
Fascrorarup# the following four species, Fasciol. buccinoides, Meek and H., 
F. cretacea, M. and H., Fase. Saffordi and Slackii, of Gabb. 
Page 107 (for XXIT) read XXIII, Latirvus, Montfort, 1810. 
X. Fanily,—WURICIDA, yp. 111. 
Stimpson in Am. Jour. Conch., I, 1865, p. 56, remarks that the ruzeverwz 
and even the genus Fusus (as restricted) of the rvszva belong to the Fascrozarups, 
while Neptwnea and its allies belong to the Buccryzpz; the family ought thus to 
