266 APPENDIX TO THE SUPPLEMENTS TO 



Obs. — This is a very remarkable and well characterised species. A dark line, 

 extending from the umbo to a third of the length of the valve, shows that it was 

 possessed of an internal septum, and had a long loop. In external shape it approaches 

 most nearly to the Terebratella bivalvata of Deslongchamps. Its discovery is due to Mr. 

 S. S. Buckman, who sent it to me with the MS. name of W. Haasi, Dr. Hippolyte Haas 

 and Dr. Camille Petri being the authors of the important work entitled ' Die Brachiopoden 

 der Jnraformation von Elsass-Lothringen,' Strassburg, 1882. It occurs in the Inferior 

 Ooolite (Am. Hump /iriesi anus zone) near Half-way House, Sherborne, Dorsetshire. 



22. Waldheimia Brodiei, S. S. Buckman, MS. Dav., Appendix to Sup., Vol. V, 



PI. XIX, figs. 14, 14 a, b, 15, 15 a, b. 



Shell somewhat circular or obscurely sub-pentagonal, usually as wide as long, some- 

 times longer than wide. Dorsal valve gently convex and flattened, divided into three 

 lobes, of which the central one is in the shape of a slightly produced mesial fold. Ventral 

 valve moderately convex, with a mesial sinus extending from the beak to the front ; beak 

 small, incurved, and truncated by a small circular foramen. Two specimens measured — 

 Length 8, breadth 8, depth 4 lines. 

 „ 11, „ 7, „ 5 „ 



Obs. — This is a well-marked shell, and easily separable from its congeners ; its 

 flattened dorsal valve is remarkable. Nothing is known of its interior, but a dark line, 

 extending from its umbo to about a third of the length of the valve, shows that it was 

 possessed of an internal septum and a long loop. 



This species was discovered by Mr. S. S. Buckman in the Inferior Oolite (Am. 

 Humphriesianus zone) at Louse Hill, near Sherborne, Dorset, where the shell is said 

 to be abundant. It was named by Mr. S. S. Buckman prior to sending it to me for 

 description after the Rev. P. B. Brodie, to whom science is indebted for so many important 

 researches. 



23. Waldheimia disculus, Waagen. Dav., Appendix to Supplements, Vol. V, PI. 



XIX, fig. 17, 17 a. 



Macandrevia disculus, Waagen. Geog. Palaont. Beitriige, pi. xxxi, figs. 8, 9, 1867. 

 Waldheimia — — S. S. Buckman, Proceed, of Dorset Field Club, 



vol. iv, p. 29, 1882. 



Mr. S. S. Buckman, in his paper on the " Brachiopoda of Dorset," says, " This species 

 was discovered by myself in the Am. Sowerbt/i-zone in a quarry near Corton-Denham, 



