462 MR. G. R. TINE ON THE POLYZOA OF 



be referred to with any degree of authority. Lamoiiroux and Gold- 

 fnss, however, were soon followed by Bronn, Michelin, Blainville, 

 and Milne Edwards ; and as these writers professedly dealt with 

 Cretaceous Bryozoa, among others, names established by them 

 gradually found their way into British scientific (paheontological) 

 literature. The earlier names for the Stomatopora' were Alecto, 

 Lamx., and Aulopora (in part), Goldf., and for a long time these had 

 precedence over the now generally accepted term ^tomatopora, 

 Bronn. Amongst foreign authors antecedent to d'Orbigny the 

 names of v. Reuss, Roemer, and v. Hagenow are justly remembered as 

 specialists who have materially advanced our knowledge of Creta- 

 <^eous Polyzoa. The publication of d'Orbigny's ' Paleoutologie 

 Francaise,' with an atlas of 200 plates, inaugurated a new epoch in 

 the history of Polyzoan groupings, and any one who undertakes to 

 describe British Cretaceous Polyzoa should be familiar with d'Or- 

 bigny's beautiful illustrations of the Prench Cretaceous species, 

 however independently his elaborate, but almost unmanageable, 

 classification may be criticized or disregarded. 



I As regards British Cretaceous Stomatoporce. Prof. Morris (1854), 

 ■! Catalogue of British Fossils,' records two species only — Alecto 

 tjradlis, Edw., and A. ramea, Blainville. Mr. Woodward, in his 

 \ Geology of Norfolk,' records A. gracilis, Edw., from the Norwich 

 phalk ; and Lonsdale, in Dixon's ' Geology of Sussex,' A. gracilis 

 ftnd A. ramea from the Upper Chalk of Kent and Sussex. Since 

 the publication of these names very little has been done, specifically, 

 to increase the number of forms, but in the ' Catalogue of the Mu- 

 i^eum of Pract. Geol.' 1878, Alecto reticulata, d'Orb., is adopted as 

 the name of a Lower-Greensand Polyzoon. In Mr. Etheridge's 

 summary, however, of the Organic llemains of the Cretaceous Strata 

 (Bibliography, 26, p. 589), only two species of Alecto are recorded, 

 both in the Upper Chalk. 



In working out the uniserial Stomatoporo' of the Bed Chalk, I 

 have, to a large extent, followed the leading of d'Orbigny. In some 

 few cases I have not been able to adopt his names wholly for other 

 groups ; and to prevent confusion, or misconception even, as to the 

 value of the Bed-Chalk fauna generally, I have created a few new 

 names, varietal or specific, for forms Avhich merited this distinction. 



D'Orbigny describes, and illustrates by a number of figures, the 

 following species of Stomatopora as belonging to the French Creta- 

 ceous series. British species are marked with *, 



*1. Stomatopora granulata, Bronn, p. 83(), pi. 628. f. 5-8. 

 *2. imrassata, d'Orb., p. 837, pi. G2S. f. lj-11. 



;3. subf/racilis, d'Orb., p. 838, pi. 629. f. 1-4. 



*4. linearis, d'Orb., p. 838, pi. 629. f. 5-8. 



*5. longiscata, d'Orb., p. 839, pi. 629. f. 9-11. 



(). plicata, d'Orb., p. 839, pi. 629. f. 12-15. 



*7. divaricata. lloemer, p. 840, pi. 629. f. 16-18. 



*8. reticulata,' d'Orh., p. 841, pi. 630. f. 1-4. 



9. calypso, d'Orb., p. 841, pi. (530. f. 5-8. 



*10. ramea, Blainville, p. 842, pi. 630. f. 9-12. 



■m. gracilis, Edwards, p. 843, pi. 758. f. 17-18. 



