ON GEETACEOUS POLTZOA. 319 



from Moi'ris' ' Catalogue of British Fossils ' — of six additional species of 

 Polyzoa, which had been previously recorded from the No. 3 locality 

 given above. Until 1889 these v^ere all the Cretaceous Polyzoa from 

 Gravesend known to the respective authors. 



In June 1890, with the other material already refei-red to,' I re- 

 ceived from Professor T. Rupert Jones, F.R.S., a small packet labelled 

 * Gravesend.' This proved to be pickings, or refuse material, which re- 

 mained after Mr. Jones had selected the Foraminifera and Entomostraca, 

 In the packet I found a number of minute fragments of well-preserved 

 Polyzoan remains — besides other organisms — and the following list is 

 the result of my labours on this small collection. I have included in the 

 list the names only of species of whose identity I felt assured ; but 

 there were other fragments which would help me to add to the list if 

 better material could be forthcoming. I do hope, therefore, that local 

 students will search for and record their discoveries in this, as well as in 

 other districts where the Upper Chalk rocks are exposed. Examples of 

 all the species recorded below are in my own cabinet. Professor Morris' 

 list is given separately, because, as yet, I have not been able to identify 

 any of the species named. 



Sub-order Ctclostomata, Busk. 



Idmonea unipora, d'Orb., ' Terr. Cret.,' p. 737, pi. 613. 



subgracilis, d'Orb., ' Terr. Cret.,' p. 738, pi. 614. 

 Filisparsa (pulchella ?), Marsson, 'Der Bryoz. der Weiss. Kreidebil ' 



pi. 3, fig. 7. 

 Entalophora proboscidea (Edw., Perg., ' Revis. des Bryoz.,' p. 359), 

 „ forma raripora, d'Orb., ' Terr. Cret.,' p. 787, pi. G21. 



„ „ filiformis, d'Orb,, I. c, p. 791, pi. 622. 



Heteropora (Sparsicavea) Francqana, d'Orb., I. c, p. 951, pi. 775. 

 Apsendesia (Lichenopora) organizans, d'Orb., I. c, p. 757, pi. 646, fi^s 



9-13. 

 Homoeosolen ramulosus, Lonsd., ' Geol. Sus.,' p. 307, pi. 18b, figs. 3-5. 

 Reptomulticava mamilla, d'Orb., ' Terr. Cret.,' p. 1041, pi. 793. 

 Multicrescis sp. (Heteropora, Perg., 'Revis. des Bryoz.,' p. 373). 



Sub-order Cheilostomata, Busk. 



Planicellaria oculata, d'Orb. (one segment only), 'Terr. Cret.,' p. 37 



pi. 653. 

 Vincularia regularis, d'Orb. (typica), Z. c, p. 64, pi. 601, figs. 1-3. 



,, forma Santonensis, d'Orb., I. c, p. 78, pi. 656, fig. 2. 



„ „ perangusta? d'Orb., Z. c, p. 83, pi. 658, fig. 11 (or 



near) . 

 Membranipora sp. 



Micropora Roemeri, Lonsd., ' Geol. Su^.,' pi. 18b, fig. 7. 

 Melicertites sp. (near M. Francqana, d'Orb., pi. 737, fig. 16), 

 Eschara sp. 



The following are recorded by Professor Morris from Gravesend 

 (' Cat. British Fossils,' edition 1854) :— 



*Diastopora gracilis, M. Ed., ' Ann. Sc. Nat.,' 1838, p. 229, pi. 14, 

 fig. 3. 



' £rit. Assoc. Jiej>. (1890) on Cretaceous Polyzoa, p. .390. 



