245 
Helations and Differences. — In sliape it resembles A. qnadrata, 
Sowerby. It also resembles my A. Hardiji, but differs from it by thickness, 
the anterior position of its beaks, and its surface ornamentation. 
Uorizon and Locality . — A single specimen was found in a dark, grey 
limestone at Harper’s Hill. 
C/^m-PTEHOPOBA. 
Genus — CONULARIA, Hiller. 
CONULAEIA TBNUISTE-IATA, F. McCoy} 
PI. XXIII, Pig. 2. 
Conularia tenuistriata, P. McCoy, 1847, Ann. Mag. Nat. Hist., XX, p. 307, pi. 17, fig. 7, 8. 
This is a quadrangular, pyramidal shell, rhomboidal in section with 
very unequal sides ; the breadth of the narrow sides is harely half that of 
the long sides. Its apical angle measures only ten degrees by the gonio- 
meter, and a length of from ten to eleven centimetres may be assumed for 
the specimen figured hy McCoy. At each of the four angles is a narrow 
groove at the bottom of which the extremities of the transverse ribs of the 
two adjacent faces recurve upwards (towards the apex) alternating with each 
other. The ribs are slightly arched and interrupted on each of the four faces 
by a median line traversing the shell from apex to base, and they are 
separated from each other by small, oblique furrows, striated in the direction 
of the main axis ; they are very numerous, about nineteen to each centimetre 
of length. 
Relations and Differences . — This Conularia greatly resembles G. 
Geroldsteinensis, d’Archiac and de Verneuil, in the number and form of its 
transverse ribs ; it differs principally by the apical angle of its broad side 
which is only ten degrees, while that of the Devonian species is fifteen 
degrees, and by the absence of granulations which cover the ribs of C. 
Geroldsteinensis . It is also closely allied to C. Drongniarti by its apical 
angle and intercostal striae, but it differs by having many more rihs in a given 
space and by giving a different transverse section. 
Horizon and Localities. — So far this species has been found only in 
the micaceous sandstone at Muree. 
* [Waagen, Records Geol. Survey India, 1886, XIX, p. 20, t. 1, f. 3; Salt Range Fossils (Pal. Indica), 
1891, IV, Pt 2, p. 125, t. 5, f. 2, 3.— W.S.D.] 
