MOLLUSCA— CEPHALOPODA. 
169 
Tlio Oolitic series includes from India, and 
various genera from the Ha jocian rocks of Calvados and the 
corresponding Inferior Oolite of this country. A specimen 
referred to Stcpheoccras Brodiaci has a furrow down one side 
of the last whorl, the result apparently of injury to the 
secreting surface. The shell of Cadomoccras cadomcnsc is 
eccentrically coiled, and has projecting ears at the sides 
of its aperture. Haploplenroceras suhspinatuTn is remarkable 
as repeating the general form of BaUopUuroccras sjnnahim 
in the Middle Lias ; this is one of those similarities of form 
in different genera that has led to so much confusion in 
classification. Here we may note a fine aptychns from the 
Stonesfield Slate, and a beautiful Stcpheoccras from the 
Great Oolite of Minchinhampton. The ensuing Cornbrash 
furnishes good specimens of Macrocephalitcs. The larger 
ammonites froin the Lower Oolites include fine examples of 
species giving their name to well-known horizons, such as 
the type-specimens of Ludioigia Murchisonac and Stcpheoccras 
Hamphricsianum, also BctrJdnsonicc garantiana, Strigoccras 
Trucllei, Cocloccras Blagdcni (Fig. 95 d), and Parldnsonia 
Parldnsoni. There are some very large specimens of 
Parldnsonia dorsetensis and otliers, cut down tlie middle, 
or polished to show tlie sutures. The type-specimen 
of Fontannesia Benoeri from the Inferior Oolite of Bradford 
Abbas preserves its long ears, and liere is also the type- 
specimen of “ Ammonites ” Tessonianns, d’Orbiguy, from the 
Teisson collection. Among Oxfordian species the well-known 
Cardioccras cordatnm repeats the general form of Amalthens 
margarilatus, although derived from quite a different stock. 
Very fine series of this genus and of Cccdoccras are in the 
Wall-case. Tlie Callovian series furnishes several cliarac- 
teristic genera, among them the highly-ornamented Cosmoccras. 
Many Oxfordian species of this genus have very long 
processes or ears from the sides of the aperture. From the 
Oxford Clay of Wiltshire come large specimens of these as 
well as of Proplannlitcs Kocnigi with a smooth senile stage. 
Ihe Coral Bag ol England is noted for the internal casts 
of the chambers of ammonites, from which the shell has 
been dissolved away. These belong mostly to Aspidoccras 
pcrarniatum, of which some specimens from Brora, in 
Sutherhand, are also shown. Numerous aptychi are found 
in the Kimmeridge Clay, especially at Ely, and the same 
forms occur in connection with their ammonites in the 
contemporaneous Solenhofen Stone. Near these are examples 
Gallery 
VII. 
Table-case 
8 . 
Wall-case 
10 . 
Wall-case 
9 . 
Table-case 
9 . 
Wall-case 
9 . 
Table-case 
9 . 
Wall-case 
9 . 
