78 

 No. 9. TEEEBRATULA CEANE^E, n. sp. Plate II., fig. 2, 3. 



Shell elongated oval, broad anteriorly, tapering posteriorly, 

 nearly straight in front, sides gently convex. Dorsal valve 

 moderately deep, with a very wide fold scarcely rising above the 

 regular convexity of the valve, but defined by two faint diverg- 

 ing lines. Ventral valve twice as deep as the opposite one, and 

 longitudinally flattened from near the extremity of the beak to 

 the front ; the lateral portions of the valve are also flattened, 

 sloping rapidly from the edge of the mesial space ; beak very 

 short, rather straight, and truncated by a small circular fora- 

 men ; lateral margins presenting a convex curve ; loop not 

 known, probably short ; surface smooth, and marked by con- 

 centric lines of growth. Two specimens measured the first, two 

 inches three lines in length, one inch five lines in width, and 

 one inch three lines in depth ; the second, two inches one line 

 in length, one inch four lines in width, and one inch two lines in 

 depth. Ols. This remarkable species is at once distinguishable 

 from all its British congeners by its peculiar shape and char- 

 acter. Mr. Walton, of Bath, gave me a specimen of it some 

 years ago (fig. 2), which had been obtained from the Inferior 

 Oolite near Sherborne. I found another, a rather larger ex- 

 ample, but exactly similar to it, among some specimens from 

 near Sherborne, forwarded to me by Mr. Darell Stephens. I 

 have named it after Miss Agnes Crane, a talented young palae- 

 ontologist, to whom science is indebted for several excellent 

 papers. 



No. 10. TEEEBEATULA WEIGHT::, Dav. Plate II., fig. 4. 



TEEEBEATULA WEIGHTH, Dav. Appendix to vol. i. of British 

 Fossil Brachiapoda, p. 20 (two woodcut figures). 



In shape this species is longer than wide, and ovate ; its valves 

 are equally globose, with the greatest depth near the centre of 

 the shell ; margin sinuous, the front line in the smaller valve 

 presenting a concave curve, and a convex one in the opposite 

 valve. No regular fold in the smaller valves, but there exists 

 a depression or sinus near the front in the larger one. The 



