KONGL. SV. VET. AKADKMIENS IIANDLINOAH. I5ANI) 27. N:() 3. 177 



10. C. anti(|iiii Temp, and Brun (1H89). — Ellipticial. Tj. (),(i(; to (),(i8; B. (),(,i to 0,(m; imii 

 Upper V. with straiglit lanceolate axial area cdniiected with the lateral ai'eas, wliich t'oi'in an 

 annular space at some distance from the margin. Striae !) in 0,oi mm., coarsely punctate (pnncta 

 () in O.oi mm.) crossed hy the lateral areas. Lower V. with sti'aight median line ending at some 

 distance from the margin in small lunate terminal areas. Central area transverse. Striiu 10 to 

 11 in 0,0 1 mm. distinctly punctate; puncta IT) in 0,oi mm. — I), foss. du Japon p. 32 PI. VIII 

 f. 5. — A. S. Atl. CXCI,'49, 52. 



Marine: Japan, fossil (Brun Coll.)! 



Var. fossil/s Cl. — L. 0,<).'i to 0,08.1 ; B. O.o.^.'i to 0,or)8 mm. Upper V. with linear axial 

 area. Striae 10 and puncta 7 to !» in O.oi mm. — A. S. Atl. CXCI, 44 to 4(5. 



Marine: S:ta Monica Cal. and Oamaru, New Zealand, fossil! 



Nearly akin, if not identical, (Jocc. Jimhoi Pant. (Ill PI. II f. 24; 1893) a})peai-s to be. The 

 figure represents the lower valve. (I japonica Pant. (Ill PI. XLII f. .582; 1893) seems to be the 

 upper valve. 



11. C. volnta Br. (1894). — Orlncular. Diam. 0,o8. Upper V. with lanceolate axial area 

 not reaching to the margin and with one or two lateral areas on each side of the axial area. Striffi 

 10 to 11 in 0,0 1 mm. j)unctate; puncta 9 to 10 in 0,oi mm. Lower V. with slightly sigmoid 

 median line, small rounded terminal areas at some distance from the margin. Strite 12 in O.oi 

 mm., radiate throughout, punctate; puncta 11 to 12 in 0,oi mm. — A. S. Atl. CXCVI f. 25, 20 

 (left figure Cncc. prohatu A. S.). 



Marine: California, S:ta Monica, fossil (Deby Coll.)! 



12. €. iuternipta Grun. (18(13). — Elliptical. L. 0,0:52 to 0,062; B. 0,024 to 0,o4 mm. 

 Upper V. with short, narrow, axial area slightly widened in the middle, connected with the very 

 broad lateral areas. Strite 9 to 10 in 0,oi mm. at the margin and at the axial area, costate with 

 a median punctum. Lower V. with straight median line, ending at some distance from the margin 

 in small lunate terminal areas. Axial area indistinct. Central area transverse (and frequently 

 unilateral). Striiii 9 in 0,oi mm. radiate and curved towards the ends, distinctly punctate. — 

 Verb. 1863 p. 144 PI. IV f. U. V. H. Syn. PI. XXX f. 3, 4. A. S. Atl. CXCIV f. 17. C. Crux. 

 Pet. D. de Campbell PI. IV f. 4? 



Marine: Kamtschatka! 



13. €. vitrea Brun (1891). — Elliptical. L. O,ofi to 0,07; B. 0,04 to 0,o5 mm. Upper V. 

 with narrow lanceolate axial area, and narrow lunate lateral areas. Strife between the areas 10 

 in 0,01 mm., having a large median punctum. Marginal strise also with a median punctum. 

 Lower V. with straight median line, ending at some distance from the mai'gin. Axial and termi- 

 nal areas indistinct. Central area irregularly rounded. Stria; 18 in 0,ui mm. radiate, punctate; 

 puncta about 17 in 0,oi mm. - D. esp. nouv.'p. 19 PI. XVIII f. 2. A. S. Atl. CXCIV f. 10. 11. 

 C. De Toniana Pant. Ill PI. XXXIV f. 482 (1893). C. pseudomarginata A. S. Atl. CXCIV f. 8. 



Marine: Japan and Hungary, fossil (Brun). 



Var.? rerrucosa Brun (1891), — L. 0,o5 to 0,06; B. 0,0.35 to 0,o5 mm. Upper V. with 

 lanceolate axial area, and broad lunate lateral areas, marked with some large scattered dots. 

 Striae 15 in 0,oi mm. with a median punctum. Marginal strite short. Lower V. with straight 

 median line, ending at some distance from the ends in pyriform terminal areas. Axial and central 

 areas indistinct. Strife 18 in 0,oi mm. radiate and curved at the ends, punctate; puncta 17 in 

 0,01 mm. — G. sp. Brun Temp. J), du Japon PI. VIII f. 9. C. rerruc. Brun D. especes nouv. p. 18 

 PL XVIII f. 7. A. S. Atl. CXCIV f. 14. 



Marine: Japan, fossil (Brun Coll.)! Indian Ocean (Brun). 



K. Sv. Vet. Akad. Handl. H.iiui 27. N:o 3. 23 



