HIND : THE MILLSTONE GRIT FAUNA 
29 
Exterior. — The surface is ornamented by fine concentric lines 
of growth. 
Dimensions. — Fig. 23, PL V., measures : — 
Anteroposteriorly, 45 mm. 
Dorsoventrally, 18 mm. 
Elevation of valve, 8 mm. 
Locality. — The Millstone Grit of Hazel Hill and Glints quarry. 
Observations. — A typical Sanguinolites somewhat resembling 
*S. tricostata, but more transverse and not so markedly tricostate and 
there is no oblique ridge. The anterior end is very short indeed and 
almost entirely filled by the anterior adductor muscle scar. 
PALvEOLIMA striata, sp. nov. 
[Fig. 9, PI. IV.] 
Specific Characters. — Shell small, oblique, subquadrate, com- 
pressed, broader dorsoventrally than anteroposteriorly, slightly 
inequivalve. The anterior border almost straight, the inferior, curved, 
the posterior almost straight, oblique, the hinge line straight, shorter 
than the inferior border. Umbones small, tumid, slightly raised and 
central, ears small, the posterior ear almost obsolete. 
Exterior. — The surface is ornamented by numerous fine, close 
radiating moniliform lines. The right valve almost smooth. 
Dimensions. — PL IV., Fig. 9 measures : — 
Anteroposteriorly, 13 mm. 
Dorsoventrally, 14 mm. 
Locality. — Millstone Grit, Glints quarry. 
Observations. — The specimen consists of both valves which 
are exposed on the same slab, one of which has some fragments of 
the external surface preserved. 
The species is at once distinguished from all others of the genus 
by its ornament and flattened shape. 
One specimen shows the single adductor scar subcentral in position 
and indicates in the cast the ornament of the surface. The left valve 
seems somewhat more gibbose than the right. 
