CYi'lUNA. l:«I 



Hcutdrlis. — Only two .speciiiicns have been seen, hulli of wliirli were collected 

 by Mr. H. Keeping, and aic now in tlie Sedgwick Museum, Cambridge. 

 Dlxtribiit'wit. — Folkestone Heds, near (Vipt Toint, Folkestone. 



Anthonya, sp. Plate XIX, fig. (3. 



IJescr'qitinii. — Shell elongate, tapering posteriorly, veiy incijiulatei'al, greatlv 

 compressed. Anterior margin convex, rounded, passing gradually into the slightly 

 curved ventral margin. Posterior margin short, truncate, forming angles with the 

 ventral and dorsal margins. Postero-dorsal margin long, slightly concave. Umbones 

 sharp, anterior. Carina indistinct. Postero-dorsal area narrow. Surface of shell 

 smooth, except for growth-lines, which are rather more distinct near the anterior 

 margin than elsewhere. 



Length, 38 mm. Height, 15 mm. 



Ajjiiiificti. — This species appears to be closely allied to A. CornueHaiia (d'Orbigny),' 

 but does not possess the concentric ribs near the anterior margin. It diifers from 

 ^4. cantiana, sp. nov., in the greater length of the anterior part of the shell, the 

 greater curvature of the anterior margin, the lai-ger apical angle, and the absence 

 of concentric ribs. 



Remarks. — A left valve is the only specimen seen. 



Distribution. — Lower Greensand (Crackers) of Athcrficld. 



Familu-CYPRimDA], LnmnrL: 



Genus — Cvi'iMNA, Laninrcl-, 1818. 

 (' Auiin. situs Vert.,' vol. v, p. 550) 



Cvi'KiNA Saussuki [l!niii(jiiii(rl), ISlil. i'late XIX, figs. 7 — lo. 



1821. DoNACiTES Saussuki, a. Brongniarl. Auu. ik's Mines, vol. vi, \t. 655, pi. 



vii, fig. 5 (uou Venus Haiitsurii, 

 Goldfuss, 1840J. 

 1854. Mactra saussuki, E. liencvier. Mi'ni. ^'i-ol. sur la Perte-ilii-KIione, p. 24. 

 185(5. Ctpiuna Saussuiu, F. J. Piclcl and E. lienevier. Foss. Terr. Aptieu 



(Mater Pal. Suisse, 

 ser. 1), \i. 73, pi. 

 viii, tigs. 1 — 2. 



For references see p. 130, footuoto 3. 



