EXTALOPHOEA. 
221 
Coniacian : Tours, Jouc, Liiynes, Sainte Paterne, and 
La Eibocliere, ludve - et - Loire ; Yeudome, Lavardin^ 
Lisle, Yilledieu, Les Eoclies, etc., Loir-et-Cher. 
Turonian — Angoumian : Merpius, Chareute ; St. Germain d’Arce, 
Sarthe ; Yillavard ; Strelilen, in Upper Planer ; Gross- 
Ujezd, Ytelno, and Chorouschek, near Msclieno, Bohemia, 
in Iserschichten ; Les Bodies, Montoire, Yillardin, and 
St. Bimay, Loir-et-Cher. 
Cenomanian ; Saint Calais, Janieres, Sarthe ; Plaiien, Saxony, in 
Lower Planer ; Kank and Jine, in Korycaner Schichten. 
Xeocomiau: Ste. Croix and Poiitarlier {fide Waters). 
Figures. 
PL X. Fig. 1. A Eoarium of var. raripora (Orb.); X 6 dia. 
Middle Chalk : Chatham. Gamble Coll. D. 461. 
PI. X. Fig. 2. A part of a larger zoarium of the typical 
variety ; X 6 dia. Middle Chalk : Chatham. Presented by 
Wm. Gamble, Esq., 1889. D. 4516. 
PI. X. Fig. 3. Part of a zoarium of var. alternata, Orb. ; X 6 dia. 
Upper Chalk : Bromley. Simmons Coll. D. 2835. 
PL X. Fig. 4. Fragment of a zoarium of var. suhgracilis, Orb. 
X 6 dia. Middle Chalk : Chatham. Gamble Coll. D. 376. 
PI. XI. Fig. 16. A worn fragment. Upper Chalk : Gravesend.. 
Yinc Coll. D. 1001. 
PI. XI. Fig. 18. Part of a specimen which is one of the types 
of Entalophora prohoscidea, elegans, Vino. Upper Greensand : 
Cambridge. lesson Coll. Ex B. 4447. 
Aeeinities. 
This Bryozoan belongs to the same group of EntalophorcG as the 
type species of the genus and the living E. prohoscidea (Edw.). 
It differs from the former by its more fragile growth and the shorter 
free distal ends of the zooecia. Its distinction from E. prohoscidea 
is more difficult of definition, though it is easy to separate the 
specimens. In the living ‘ species ’ the zooecia are more numerous 
in the proximal parts of the zoarium, and the free j)ortions of the 
zooecia are longer, whereas in the Cretaceous form the basal zooecia 
have very low peristomes. 
M. Pergens, the great advocate of the specific value of the 
dimensions of zooecia, states that the diameters of the zooecia and 
aperture in Cretaceous specimens are GO to *12 mm. and *26 to 
*32 mm. respectively. In a recent specimen from Xaples, in the 
