BIVALVIA. We 
AsTarte FimBriata, Walton, MSS. Tab. XL, figs. 34, 34 a, 
Testa transversa, ovata, subdepressa, umbonibus antemedianis parvis, margine cardi- 
nali elongato, subrecto, obliquo, acuto ; lunula magna elliptica ; lateribus costulis concen- 
tricis acutis, elevatis subdistantibus; etate progrediente crebrioribus et irregularibus 
tnstructis. 
Shell transverse, ovate, somewhat depressed ; umbones small, depressed, curved forwards; 
hinge-margin lengthened, nearly straight, its margin acute and rendered fimbriated by 
the acute, projecting extremities of the coste, which are elevated, concentric, distantly 
arranged, and regular in the young shell, but more closely arranged and irregular in 
specimens of adult growth; the lunule is large, elliptical, its margins acute. 
Allied to 4. depressa, Goldf., compared with which the umbones are less prominent 
and more oblique, the hinge-border more lengthened, the coste more elevated and fewer ; 
the convexity of the valves is also greater. ‘The test is thinner than is usual with this 
genus. 
Occasionally a small and ill-preserved specimen has been found in the Great Oolite of 
Minchinhampton, and mistaken for A. minima, Phil. ; the coste in the latter shell are more 
obtuse and more closely arranged, the general figure being more orbicular. 
Geological Positions and Localities. The Forest Marble of Farleigh and the Great 
Oolite of Bussage, near Bisley Common. 
Astarte? 1enota, Zyc. Tab. XU, fig. 10. 
Testa subovata, subdepressa, postice truncata, inferne et postice oblique subangulata, une- 
bonibus antemedianis acuminatis, lunula parva, superficie, plicis incrementt numerosis, deli- 
cate instructis. 
Shell subovate, subdepressed posteriorly, with a truncated extremity to the 
hinge-border and with an oblique angle proceeding from the umbo to the inferior- 
posterior border ; umbones antero-mesial, pointed, and curved forwards; lunule slightly 
impressed ; the surfaces of the valves with delicate, irregular, numerous plications of 
growth. 
The hinge not having been seen, the genus is rather doubtful; possibly it may be « 
Cypricardia. 
Geological Position and Locality. The Forest Marble of Laycock ; in the collection of 
W. Walton, Esq. 
