80 BERENICEA. 



X 12 dia. PI. III. Pig. 3. Part of a zoarium with gonocyst, 

 from Cornbrash. Thrapston. D. 924. X 18 dia. 



Affinities. This species is most closely related among English 

 Jurassic Bryozoa to B. sauvagei, Greg. ; the differences between 

 them are noted in the description of that species. Vine includes 

 with it, though doubtfully, the two species B. crussolensis (Dum.) 

 and Diastopora liassica (Quenst.). The latter is, however, a Pro- 

 loscina, and I see no especial affinity between the former and the 

 species under consideration. 



The zoo3cia greatly resemble those of B. normani (D'Orb.), 

 but the peristomes are more raised than in that species, and the 

 zoarium more irregular and flabelliform. Among Cretaceous species 

 the one most nearly allied to this is B. folium, Novak. 1 This has 

 the same long sinuous zocecia, and slightly raised peristomes. The 

 only difference I can detect between them is in the structure of 

 the gonocysts. These are rounded or pyriform in B. compressa, 

 but broad and irregular in B. folium. I had for some time adopted 

 Novak's name, as it is prior to Vine's, but the difference of the 

 gonocysts seems sufficient to keep them apart. Two other Bohemian 

 Cretaceous species, which are allied to the present, are B. lacri- 

 mopora, Nov., and B. pilosa, Nov. The former 2 differs by having 

 a raised rim round the peristomes, and having the distal ends of 

 many of the zocecia considerably expanded in breadth. The 

 zocecia, moreover, are more irregular in form and distribution. 

 Berenicea pilosa? Nov., is distinguished by a greater ornamentation, 

 as well as having the zooecia less regularly cylindrical and the 

 peristomes more elevated. Another species which belongs to this 

 group is Berenicea papy raced, D'Orb., pars ; this differs by having 

 straight zocecia 4 and a regular zoarium. 



The sinuosity of the zooecia in B. compressa is not well shown 

 in PI. III. Fig. 3, which is given to illustrate the gonocyst ; but 

 it is well shown in Vine's figures, and is indicated in PL III. Fig. 2. 



1 0. Novak. Beitr. Kennt. bohm. Kreidef. : DenJc. k. Akad. Wiss. Wien. 

 Bd. xxxvii. Abth. 2, 1877, p. 96, pi. iv. figs. 11-14. 



2 Ibid. p. 97, pi. iv. figs. 23-4. 



3 Ibid. p. 21, pi. iv. figs. 1-10. 



4 D'Orbigny. Op. cit. p. 868, pi. Dcxli. figs. 3, 4 ; non pi. Dcclviii. figs. 

 14-16, which has been made into a new species, Diastopora mutata, Pergens. 

 Eev. Bry. Cret. D'Orb. : Butt. Soc. beige Geol. 1890, t. iii. Mem. p. 335. 



