PLATE V. 



1 a — fi J^o/^cope simplex, J oues&KiTkhy. Shells. Braidwood. Carluke. (Page 55). 



a; Left valve ; d, edge-view ; c, left valve of a smaller specimen ; magni- 

 fied 8 diameters, d, Part of surface ; magnified 40 diameters. 



2 a—/. Pohjcope Yoirngiana, sp. nov. Shell represented by pyrites. Campsie. 



(Page 56.) 

 «:, Left valve; b, edge-view of carapace ; c, end-view ; magnified 8 dia- 

 meters, d, e,f. Portions of the surface ; magnified 40 diameters. 



3 a — c. Ci/pridina Hunter iana, sp. nov. Cast. Braidwood. (Page 18.) 



a, Left valve ; b, front end of carapace ; c, edge-view, 



4. Ci/pridina Tliompsoniana, sp. nov. Gare. Portion of the surface, highly 



magnified. (Page 19.) 



5. Brady cinetus Bajikinianus,S.^l^. Gare. The beak, magnified. (Page 42.) 



6 a—f. Cypridina radiata, sp. nov. Shells. Airdrie. (Page 14.) 



a. Left valve ; b, edge-view ; e, end-view ; magnified 4 diameters, d & 

 €, Portions of shell ; magnified 40 diameters. /, A right valve, misshapen 

 by pressure, and showing the layers of shell ; magnified 8 diameters. 



7 a — d. Cypridinella superciliosa, sp. nov. Shell. Bathgate. (Page 22.) 



a. Right valve ; b, ventral edge of valve ; c, front view of carapace ; 

 magnified 4 diameters. d. Superficial markings ; magnified 40 dia- 

 meters. 



8 a — c. Cypridellina intermedia, sp. nov. Shell. Bathgate. (Page 29.) 



a, Left valve ; b, edge-view ; c, end-view. Magnified 4 diameters. 



9 a — c. Cypridina pruniformis, ?,^. nov. Cast. Limerick? (Page 19.) 



a. Right valve ; b, ventral ; c, front. Magnified 4 diameters. 



10 a — g. Entomoconchus globosus, sp. nov. Shell. West Broadstone, Beith, Ayrshire. 



(Page 52.) 

 a, Right valve ; h, ventral aspect ; c, front-view ; d, posterior ; magni- 

 fied 4 diameters, e, Muscle-spot ; magnified 2^ diameters. / & y, Parts 

 of surface ; magnified 40 diameters. 



11 a — c. Cyjmdella Edwardsiana[Dc,lLom.nck),vdi.x.septentrionalis,riOV. Shell. Beith, 



Ayrshire. (Page 33.) 

 a, Left valve ; b, edge-view ; c, end-view. Magnified 8 diameters. 



12 a — c. Cypridina oblonga, sp. nov. Shell. Cork. (Page 20.) 



a. Left valve ; b, edge-view ; c, end-view. Magnified 4 diameters. 



13 a — c. lihombina Hibernica, sp. nov. Shell. Cork. (Page 44.) 



a, Left valve ; b, edge-view ; c, end-view. Magnified 4 diameters. 



14 a — d. Rhombina Belyica, sp. nov. Shell. Vise, Belgium. (Page 44.) 



a, Left valve; b, edge-view; c, end-view ; magnified 4 diameters. 

 d, Superficial markings; magnified 40 diameters. 



