PLATE LIV. 



Inocebamds (continue J). 

 Fios. 



1. /. Lamarcln, Vnvk., var. Swaffham, Norfolk (probably zone of HoZasto* 

 'pl(inus). Variety connecting /. Laviarclci -with I. cordiformis. 

 Norwich Museum, No. 3298. a, right valve; h, anterior view. 

 (P. 335.) 



2—4. /. conlifornils, Sow. Upper Chalk. (P. 334.) 



2. Zone of Micraster cor-amjuinum, Gniveseud. Seilgwick Museum. Right 

 valve. 

 3, 4. Same zone, Micheldever. Dr. Blackmore's Collection. 3a, left valve ; 

 36, dorsal view of both valves ; 4, right valve. 



5 — 7. I. costellatus. Woods. Chalk Rock. (P. 336.) 



5. Cuckhamsley. Sedgwick Museum, a, left valve ; h, anterior view. 

 6, 7. Blount's Farm, Marlow. Museum of Practical Geology, Nos. 25510, 

 25511. 6(1, right valve ; Di, anterior view ; 6c, dorsal view ; 7, right valve. 



8. I. tuberculatus, Woods. Upper Chalk (zone of Actinocamax quadratus), 

 Brighton. Brighton ]\Iuseum. Part of right valve. (P. 302.) 



