MELICERITITES. 
327 
2. Meliceritites (Chisma) furcillata (Lonsdale), 1849. 
ISyxonymy. 
Chisma furcillatiim, Lonsdale, 1849. Foss. Zooph. : Quart. Journ. Geol. Soc. 
vol. V. p. 98, pi. V. figs. 24-28. 
,, ,, Bristow, 1889. Geol. I. of "Wight, 2nd ed., p. 258. 
Diagnosis. 
Zoarium of long, thin branches, which subdivide repeatedly 
and frequently anastomose. The number of zooecia in the 
branches is small. The zooecia taper gradually towards their 
proximal ends, so that the distinction between the axial 
bundle and the external zone is indefinite. 
Apertures small, circular, with low peristomes. They occur 
at the upper corner of a lozcnge-shaperl area. The apertures 
are arranged suhquincuncially, with a tendency towards an 
irregular spiral. Avicularia ? 
Dimensions. 
Diameter of a branch D3-1’6 mm. 
Diameter of aperture ... ... ... •08--1 ,, 
Diameter of zooccia -15--2 ,, 
Distribution. 
England : 
Lower Greensand — Atherfield Clay : Atherfield, and east of Ladder, 
Shanklin ; east side of Compton Bay. 
Figures. 
PL XI. Fig. 14. Part of a branch showing the front wall 
partially preserved, X 15 dia. Atherfield Clay : east of Ladder, 
Shanklin. Caleb Evans Coll. D. 2007. 
PL XI. Fig. 15. Part of a thin, longitudinal section, X 7 dia. 
The specimen was figured by Lonsdale, Quart. Journ. Geol. Soc. 
vol. V. pi. V. fig. 26 ; the section has been reground. Atherfield 
Clay : Atherfield. Morris Coll. D. 4545. 
Affinities. 
Lonsdale founded the genus Chisma for this species, which, if 
