PLATE IV. 



FIG. 1 . Berenicea archiaci, Haime. Bradford Clay : Bradford, Wilt- 

 shire. Part of a zoarium with gonocyst growing on root 

 of Apiocrinus, X 6 dia. J. Sharp Coll. Whole zoarium 

 shown natural size. [51342.] 



FIG. 2. Berenicea archiaci, Haime. Corn brash: Thrapston. Zoarium 

 encrusting Ostrea, sp., X 7 dia. With gonocysts. Vine 

 Coll. [D. 919.] 



FIG. 3. Berenicea archiaci, Haime. Cornbrash : Thrapston. En- 

 crusting Nucleolites orbicularis (Phil.). Zoarium without 

 gonocysts, x 11 dia. Vine Coll. [D. 920.] 



FIG. 4. Berenicea diluviana, Lamx. Bradford Clay : Box Tunnel, 

 Wiltshire. Encrusting Terebratula maxillata, J. de C. 

 Sow. Part of zoarium, x 13 dia. [B. 4251.] 



FIG. 5. Berenicea parvitubulata, Greg. Great Oolite : Richmond 

 boring. Part of zoarium with gonocysts, x 18 dia. 

 Presented by Prof. J. W. Judd, C.B., F.R.S. [D. 1912.] 



FIG. 6. Bere^iicea parvitubulata. Part of worn zoarium encrusting 

 Terebratula intermedia, J. de C. Sow., with gonocysts, 

 x 16 dia. Cornbrash : Rushden. Cunnington Coll. 



[60535.] 



