PLATE I. 



Ftg. 



1 a — c. Entomoconchus Scoideri, M'Coy, var. ovalis, nov. A cast from Meath, Ireland. 



(Page 49.) 

 a, Side-view of the left valve ; b, hinder view ; c, back- view. Magnified 

 4 diameters. 



2 a — e. Entomoconchus Scoideri. Small female (?) shell. From Settle, Yorkshire. 



(Page 50.) 

 a, Profile, showing right valve ; b, dorsal view ; c, posterior ; d, anterior ; 

 e, ventral. Magnified 4 diameters. 



3 a — d. Entomoconclius Scouleri. Cast with portion of the shell. Prom Vise, Belgium. 



(Page 50.) 

 a, Profile, showing left valve ; b, hinder end of the valve ; c, ventral edge ; 

 magnified 2^ diameters, d, Muscle-spot as shown on the cast ; magnified 

 12 diameters. 



4« — d. Entomoconchus Scouleri. Large specimen from Bolland, Yorkshire. (Page 51). 

 a, Profile, showing right valve ; b, anterior ; c, ventral j magnified 2\ 

 diameters, d, Muscle-spot ; magnified 5 diameters. 



5 a — d. Entomoconchus Scouleri. Large specimen from Bolland. (Page 51.) 



a, Profile, showing left valve ; b, anterior ; c, ventral ; magnified 2^ dia- 

 meters, d, Muscle-spot ; magnified 5 diameters. 



6 a — c. Entomoconchus Scouleri. Small male (?) shell. From Bolland. (Page 51.) 



a, Profile, showing right valve ; b, front-view ; c, ventral. Magnified 2-| 

 diameters. 



7 a — c. Entomoconchus orbicularis, sp. nov. From Little Island, Cork. (Page 52.) 



a. Profile, showing right valve ; b, front-view ; c, dorsal view. Magnified 

 2^ diameters. 



