112 THE CRAG POLYZOA. 



TUBIPORA FLABELLARIS, Fab., Faun. Greenl. p. 430 ; Johnston, Brit. Zooph., p. 2/4, pi. xlvi 



figs. 5, 6. 



DlSCOPORA PALMATA (?), Risso. 



DIASTOPORA VASSIACENSIS, D'Orbiffny, Terr. Cret., pi. DCXXXV, figs. 12, 13. 



PLUMULA (?), Reuss, Foss. Polyp., d. W. T. B., p. 51, pi. vii, fig. 11. 



Habitat. COT. Crag, S. Wood. (Recent) Britain. 



Genus 6. ALECTO, Lamx. 



Polyzoario repente, adnato, irregulariter ramoso seu lobato ; cellulis in ordine simplici 

 vel in seriebus transversis, plus minusve regularibus dispositis. 



Polyzoarium creeping, adnate, irregularly branched ; cells in single series, or disposed 

 in more or less irregular transverse rows. 



(a) Cells uniserial. 



Sp. O. 



(b) Cells multiserial. 



1. A. REPENS, 8. Wood. PI. XX, figs. 5, 8. 



Ramis linearibus parvis abrupte curvatis, subalternantibus, subdichotomis, superficie 

 granulosa. Cellulis bi-, tri-, subinde multiserialibus. 



Branches linear; cells bi-, tri-, rarely raultiserial; minute, abruptly curved; irregularly 

 alternating, subdichotomous ; surface finely granular. 



T. REPENS, S. Wood, Ann. Nat. Hist., vol. xiii, p. 141. 



T. FIMBKIATA (?), Michelin (ex syu.), Icon. Zooph., p. 322, pi. Ixxvii, fig. 7. 



IDMONEA RAMOSA, WOrligny, p. 632, figs. 1, 2. 



Habitat. C. Crag, on the inside of a small Pecten ; (?) R. Crag, on the inside of a 

 shell, S. Wood , (?) Done, Michelin. 



2. A. DILATANS, W. Thompson. PI. XX, figs. 6, 7. 



Lobis ad marginem dilatatis. Cellulis inultiserialibus, superficie nitidissime 

 punctulata. 



