266 F. R. Coiqjer Reed — Woodivardian Museum Notes. 



To conclude, therefore. The present evidence of the asar seems 

 to me to completely support the view urged in previous papers from 

 other facts and premises, namely, that Scandinavia was recently veiy 

 largely submerged by the sea, which covered it for a long time, 

 which smoothed and rounded its surface, and which rounded and 

 smoothed its myriads of boulders ; and that this sea was eventually 

 drained and discharged by some rapid and sudden upheaval of its 

 bed, causing a perhaps unprecedented diluvial movement. It was 

 this rapid movement of a vast rushing sea, driven from its bed by 

 the upheaval of that bed, which, as we saw in a former paper, 

 accounted for many of the facts in the recent geology of Scandinavia. 

 It alone, it seems to me, accounts for the various features presented 

 by the Scandinavian asar, and which bear no trace of any kind 

 which can justify us in calling in ice in any shape to explain them. 



V. — WoODWARDIAN MuSEUM NoTES. 

 A CaKBONIFEROUS BrACHIOPOD [EuMETRIA ? SERPENTINA, De KoN.) 



NEW TO Britain. 

 By F. E. CowPER Reed, M.A., F.G.S. 



IN rearranging tlie Carboniferous fossils in the Woodwardian 

 Museum, I met with a specimen labelled Atliyris, n.sp., which 

 reminded me of the form described by De Koninck ^ as Terehrahda 

 serpentina. On careful examination I am convinced that it belongs 

 to this species, and the following is a description of our specimen : — ■ 

 Shell subovate, terebratuliform, widest at about ofte-third its length 

 from its anterior edge. Yalves modei-ately convex, slightly flattened 

 anteriorly, and devoid of sinus and fold ; margin entire and regular. 

 Ventral valve a little less deep than dorsal valve, and furnished with 

 a slightly recurved beak truncated by a large circular foramen, 

 bordered in front by a pair of deltidial plates. Surface of both 

 valves ornamented with straight, radiating, very faint ribs, 60 to 70 

 in number, arranged in a regular close series separated by weak 

 narrow furrows. Some of the ribs bifurcate at about half their 

 length, and those near the hinge-line curve gently backwards. 

 Shell substance finely punctate. Concentric striae of growth are 

 distinct on both valves. Length, 25 mm. ; breadth, 22 mm. ; dorsi- 

 ventral diameter, 12 mm. 



Our specimen was found by Mr. E. B. Tavvney in the Lower Lime- 

 stone Shale of Clifton, Gloucestershire, and the Tournai beds in which 

 the Belgian specimens occur appear to be on the same stratigraphical 

 horizon. The faunas of the Lower Limestone Shale of Britain and of 

 the calcareous slates of Tournai are in many respects closely similar. 

 De Koninck^ in 1887 placed this species in the genus Acamhona of 

 White,^ but the latter, in his original definition of this genus, gave the 

 absence of a foramen in the ventral valve as a distinctive feature. Since 



^ " Descr. des anim. foss. qui se trouvent dans le terr. carb. de la Belgique" 

 (1843), p. 291, pi. xix, fig. 8. 



- " Fauna du Calc. carb. de la Belgique" (1887), vol. iv, pp. 96, 97, pi. xxii, 

 figs. 25-31. 



■* Proc. Boston Soc. Nat. Hist., vol. ix (1862), p. 27, figs. 1, 2. 



