318 EEPORT— 1892. 



found in the Riigen Chalk, andHagenow describes and illustrates several 

 very beautiful forms which are found in the Maestricht beds. Although 

 I place the following species under Esclmra, it must not be supposed 

 that I disagree with modern methods of investigation. In all probability 

 a rearrangement will take place in the grouping of species of this genus. 



118. Eschara cleon, d'Orb., ' Terr. Cret.,' I. c, p. 147, pi. 671, figs. 8-11. 



Typica. 



119. „ cleon (?), or well-marked variety. 



Large frondescent variety with avicularia. D'Orbigny's fig. 8 repre- 

 sents a small branching form, apparently withont avicularia. The 

 frondescent variety has the same form of cell and cell-area. 



120. Eschara sexangularis (?), Goldf., Hag., 'Maestricht,' p. 81, pi. 10. 



figs. 3, 4, 5. 



The shape o£ the cell is similar to figs. 4 and 5, but the avicularian 

 cell is different. Rare in Chatham Chalk. 



121. Eschara claudia d'Orb. (or near), ' Terr. Cret.,' p. 146, pis. 



671, 675. 



122. „ cybele, d'Orb. (or near), ' Terr. Cret.,' pi. 674, figs. 4-6. 



123. „ danse, d'Orb., ' Terr. Cret.,' pi. 675, figs. 7-13. 



1816. Genus Lunulites, Lamarck, 



124. Lunulites cretaceus, Defr., d'Orb., ' Terr, Cret.,' p. 349, pi. 704, 



fig. 2 

 (=L. urceolatus. Woodward, 'Geol. Norf.,' pi. 4, fig. 8, 

 =L. rarliatus, Mant., ' Medals,' pp. 256 and 290, 

 Morris.) 



1S46. Genus Stichopoka, Hag. (see d'Orb., ' Terr. Cret.,' p, 360). 



125. Stichopora clypeata, Hag., ' Bryoz. Maestr.,' p. 100, pi. 12, fig. 14 



= S. clypeata, d'Orb., 'Terr. Cret.,' p. 360, pi. 707, 

 figs. 5-9. 



The Chatham example is slightly broken on the edges, and it measures 

 7 mm. in diam. against the 9 mm. of d'Orbigny's example. 



V. PoLTZOA, Upper Chalk ; Gravesend. 



In Mr. W. Whitaker's ' Geology of London and of Part of the Thames 

 Valley ' (vol. i., pp. 83-85, 1889) will be found a list of fossils from the 

 following localities : — (1) Lewisham, (2) Charlton and Woolwich, (3) 

 Gravesend and Korthfleet, and (4) Grays and Pnrfleet (Essex). The 

 list was compiled by Mr. Jukes-Browne, from the catalogue of the collec- 

 tion in the Jermyn Street Museum, from Dr. Lavis' paper,' from a list of 

 the late Mr. Wetherell's collection, taken by Mr. Whitaker — supple- 

 mented by references from the monographs of the Palseontographical 

 Society and from specimens in the collections of Mr. Jukes-Browne and 

 of Mr. W. Whitaker. Only two species of Polyzoa are mentioned in the 

 list, but in a MS. note Mr. Whitaker gave me a list — probably compiled 



' Proc. Geol. Assoc, vol. iv., No. 9, pp. 528-530. 



