58 DE. T. DAVIDSON ON RECENT BEACHIOPODA. 



My valued and distinguished friend Dr. Gwyu Jeffreys was again mistaken when he 

 said, at p. 408 of his paper in the ' Proceedings of the Zoological Society ' for 1878, that 

 Waldheimia j)eloritana and W.floridana appear to be the same variety of Terebratula 

 septata. Having had all the developed sjoecimens in my hands, I am able to give my full 

 support to Prof. Seguenza's statement. 



Waldheimia septigera and W. Ilaphaelis are much more nearly related than either of 

 them are to W. jioridana. Terehratella Ilarice (Adams), from Japanese waters, is also 

 said by Dr. Gwyn Jeffreys to be possibly a variety of W. septigera (his T. sepdata) ; 

 but in the small specimen of T. Marice I have been able to examine the loop was three 

 times attached, as in Terehratella. 



Waldheimia septigera, undejc the name of W. peloritana, has been well described 

 and illustrated by Signor Seguenza, in his Monograph of the Brachiopoda from the 

 Tertiary def)osits of Messina in Sicily, p. 49, pi. vi. figs. 1-10 (1865). It occurs plentifully 

 in the UpiJer Pliocene rocks at Gravitelli. 



32. Waldheimia Raphaelis, Dall. (Plate XI. figs. 11-13.) 



Waldheimia Rapftaelis, Dall, Am. Journ. of Conch, vol. vi. p. 3, pi. vii. figs, a, b, c, d, 1870 ; Davidson, 

 Ou Japanese recent Brachiopoda, Proc. Zool. Soc. 1871, p. 303, pi. xxxi. fig. 9. 



Shell elongated, longer than wide, somewhat subtrigonal, widest about the middle 

 and anteriorly, tapering posteriorly, nearly straight or gently curved outwardly in front. 

 Dorsal valve moderately convex, with a very wide mesial fold, commencing at about a 

 third of the length of the valve, uniformly and gently convex, or divided longitudinally 

 by a small mesial groove. Ventral valve deeper and more convex than the dorsal one, 

 with a broad deep mesial sinus commencing at a short distance from the extremity of 

 the beak, and becoming deeper and wider as it reaches the front margin ; on either side 

 of the sinus the valve slopes abruptly to the lateral margins. Beak slightly incurved 

 and truncated by a large circular foramen, separated from the hinge-line by deltidial 

 plates. Surface smooth, marked only by concentric lines of growth ; punctures oval- 

 shaped outside, smaller, more distant, and cii'cular on the interior surface of the valves. 

 Colour light yellowish, with a slight rufous tinge. In the interior of the dorsal valve 

 tlie cardinal process is small, quadrate, and stout ; under it commences a small septum 

 that does not reach to quite half the length of the valve. Loop long, reflected portion 

 broad ; crura much curved at their extremity. Length 1 inch 10 lines, breadth 1 inch 

 5 lines, depth 1 inch 1^ lines. 



Hab. Japanese coast, near Yeddo (Plumpelly and Dall). Sagami Bay, depth 100 to 

 200 fathoms (Doderlein). 



Ohs. I have seen five good examples of this remarkable sjiccies. In Mr. Dall's and 

 Dr. Doderlein's specimens the fold in the dorsal valve is gently convex throughout ; in a 

 fine example I obtained from Mr. G. B. Sowerby the fold was probably exceptionally divided 

 into two lobes by a median groove. The shell is named after Prof. Raphael Plunqielly, 

 its nearest ally being the Waldheimia septigera of Loven. 



Waldheimia septigera, W. Ilaphaelis, and W. Jioridana belong, as was justly remarked 

 by Mr. Dall, to a peculiar group in the genus Waldheimia, and are specifically distinct. 

 The first is froin northern European seas, the second from those of Japan, and the third 

 from the Florida coast or reefs. 



