VINE : NOTES ON POLYZOA FROM THE CORNBRASH OF THRAPSTON. 253 
to that which Mr. Walford (op. cit. p. 563) speaks of as agreeing with 
Haime's figures (Juras. Bryoz. pi. vi., fig. 1). The Cornbrash examples 
are like the shorter form " as figured by Reuss." It is this shorter 
variety, which I referred to in my Caen and Ranville Paper,* and I 
found that the species varied accordingly with the habitat which 
formed the home of the colony. The robust forms were adherent to 
Terebratula ; the slighter ones to Heteropora. 
Horizon and Locality : Cornbrash, Thrapston. 
Habitat : on Terebratula and Ostrese. 
4. Stomatopora Waltoni, Haime. PL (XII.), figs. 5 — 5c. 
1854. S. Waltoni, Haime. Desc. des Bryoz. de la form. Juras. 
pi. vi., figs 2 and 3. 
1882-3. „ „ Vine. Report on Fos. Polyzoa, Brit. Assoc. 
Rep. 1883, p. 3 of Report. 
1884. „ „ Vine. Quart. Jour. Geol. Soc, p. 787. 
1888. „ ,, Vine. Notes on the Caen & Ranville Polyzoa, 
Northampton Journ. Soc. Nat. Hist,, 
p. 13. 
There are several examples of this species in the collection of Mr. 
Jesson, some of which are of the ordinary type, whilst a few of them 
approach nearer to Stomatopora dichotomoides, UOrb. 
Horizon and Locality : Cornbrash, Thrapstone. 
Habitat : On Ostreae generally. 
5. Stomatopora ? (Proboscina) Desoudini, Haime. 
1854. Stomatopora Desoudini, Haime, Des. des. Bryoz. de la Form. 
Jurassique, p. ? 165, pi. vi., f. 5, a, b. 
This species Haime places doubtfully amongst the Stomatopora 
group. Both in the peculiarity of the Zoarium and in the arrange- 
ment of the cells it may be regarded as a kind of duplex form, partly 
a Proboscina and partly a Tubulipora. The form described by the 
author is from the inferior Oolite of Longwy. One very small 
example is all that I have found encrusting Cornbrash fossils 
(Echinoderm) ; but without other examples to judge from it will be 
better to leave the species, the last of the Stomatopora group described 
by Haime, just where the author left it. See his remarks (op. cit. 
p. 165). 
* Vine, Journ. Soc. Nat. Hist. Northampton, vol. v., p. 12, 1888 
