456 ]^1K. G. R. VI^'E ON THE POLYZOA OF 



Tlie four Gaiilt forms are distributed thus : — 



Genus Berenicea .... two species. 

 ,, Ceriocava . . . . one ., 

 ,, Hetejjora .... one „ 



With a catalogue like this it is impossibk' to give satisfactory 

 ranges of species in British Cretaceous rocks. 



The Eev. T. Wiltshire, in his paper on the Ked Chalk of England 

 (Eibliography, 3), names only one species, Biastopora raniosa, as 

 found by him in the Hunstanton Chalk, and two other forms, Idmonea 

 dilatata, d'Orb., and Ceriojwra spongites, Goldf., from Speeton. 

 Neither Prof. 8eeley (Bibliograpb. 14 and 15) nor Prof. Judd (Biblio- 

 graph. 16), in any of their papers on the Hunstanton rocks, mention 

 Polyzoa in their lists of fossils ; and the same remark will apply to 

 the two more recent papers on the lower beds of the Upper Chalk, 

 by Messrs A. J. Jukes-Browne and W^illiam Hill (Bibliograpb. 38 

 and 39). My own papers on LicJienopora ? pavcipora (Bibliograpb. 

 18) and Notes on the Polyzoa of the Cambridge Greensand (Biblio- 

 grapb. 19) called the attention of palaeontologists to the probable 

 existence of many undescribed forms in the cabinets of collectors. 

 Some additions I was enabled to make through the kindness of 

 T. Jesson, Esq., E.G.S., who overhauled his cabinet of Gault and 

 Cambridge-Greensand fossils for that purpose ; and the forms now 

 to be described and illustrated I owe to the same careful collector. 

 Already Mr. Jesson has placed in my hands over 1000 fossils, from the 

 Eed Chalk of Hunstanton, on most of which encrusting forms of 

 Polyzoa are found; whilst others from the Gault and Chalk-marl still 

 await special attention. The groups of fossils submitted to me for 

 examination belong to the following : — 



Nautilus and Ostrea species ; 

 Ammonities, several species ; 

 Echinodermata and Belemnites ; 

 Inoceramus, /. concentricus and J. Crisjpii ; 

 Terebratula, T. biplicaia, Shy., and T. caplUata, d'Arch. 



On the Inocerami and Ammonites, the best Diastoporcf and 

 Prohoscince are found ; but the most abundant of all the individuals 

 examined are the Stomatoporo', on Terebratula hiplicata chiefly. 

 Species of EntalopTiora, Idmonea, and Ceriopora are very rare, 

 while Lichenoporidse are either rare or badly preserved. Cheilosto- 

 matous forms, individuals or species, are also very rare. 



In the present monograph, on account of the peculiarities of the 

 Cretaceous fauna, I have been obliged to limit or redefine the generic 

 terms employed. Since the publication of Mr. Busk's British- 

 Museum Catalogues (1854), the Polyzoa, both recent and fossil, have 

 been studied much more systematically than previously, and the 

 names of Beuss, Manzoni, Nov.ik, Marsson, Pergens, Waters, Wal- 

 ford, and many others are especially suggestive of arrangements in 

 grouping, more or less advantageous in a pala^ontological sense. 

 Since the publication of the Eev. T. Hincks's * Ikitish Marine 



