VINE I NEW OR BUT LITTLE KNOWN EOCENE POLYZOA. 
59 
§ ClIEILOSTOMATA, Busk. 
Membranipora Lacroixii, (Busk., Geol. Mag., v. iii., p. 866, p. 2). 
1826. Flustra Lacroixii, Savigny l'Egypt (Audouin), pi. 10, fig. 9. 
1850. Membranipora Lacroixii, Busk, Cat. Pol. Brit. Mar., p. 60, 
fig. 1. 
1880. „ „ Hincks, Brit. Mar, Pol., p. 129, 
pi. 17, 5-8. 
1886. „ reticulum, Pergens, Plioc. Bry., von Rhodos, 
p. 15. 
1889. „ „ E. C. Jelly, Synon. Cat. Recent 
Bryozoa, species 1047, pp. 162-164. 
Miss E. C. Jelly's valuable " Synonymic Catalogue of Recent 
Marine Bryozoa" has been published since I wrote my paper on 
- ' British Eocene Polyzoa," * which was recently printed in this 
Journal. On referring to the synonymy of M. Lacroixii, Aud., 
I find that this name will, in all probability, have to give way to that 
of Membranipora (Millepora) reticulum, Linn. In Miss Jelly's 
"Catalogue," no fewer than 60 references under the head of "Mem- 
branipora reticulum, Linn. ; Pergens" are given by her, so that ample 
opportunity is offered to those students who wish to debate the 
question as to who was the author of the species which I have called 
Membranipora Lacroixii, Aud. As the present material, however, 
really merits a most careful examination I shall make no apology for 
the length or characteristic minuteness of my descriptive sketches. 
1. Membranipora reticulum, Linn. (Pergens), E. C. Jelly, species 
No. 1047. 
Membranipora Lacroixii, Hincks. Brit. Mar. Polyz., pp. 129-131, 
„ ,, Vine, Proc. Yorksh. Geol. Soc, vol. xi., 
pt. ii., p. 159. 
Zooecia, oval, or slightly elongated at the proximal extremity, 
area occupying the whole front of the cell ; margin 'rounded "granu- 
lated," rising so as to form a prominent ridge ; occasionally in the 
more sheltered portions of the colony a few cells are preserved with 
* Vine, Notes on British Eocene Polyzoa, Proc. Yorksh. Geol. and Polyt. Soc. 
vol. xi. , pt. ii., p. 159. 
