470 ME. G. R. VINE ON THE TOLYZOA OF 



ing on other particulars, I maj^ mention that one of the species 

 which Dr. Pergens has redrawn and redescribed should be referred 

 to here : thus, instead of my proposed Proboscina claviformis, n. sp., 

 the following is substituted : — 



13. Peot^oscina sueelegans (d'Orb.). 



Stomatopora suhelegans, d'Orb. Terr. Cret. v. p. 853, pi. 759. 

 figs. 8-13. 



Stomatopora suhelegans^ Pergens, Pev. Bryoz, Cret. p. 332, pi. xi. 

 %. 3.] 



Zoarium wholly adnate, branches rounded and slightly elevated in 

 the centre: clavate, Zooecia decumbent or partially depressed; 

 in the older part of the zoarium the surfaces of the tubular cells 

 are delicately punctured while in the youuger, or growing portion, 

 the prominent peristomes only are noticeable. 



Bahitat. On Inoceramus. Fossil 13 a. 



Horizon. Eed Chalk, Hunstanton. 



At first sight this species may be easily mistaken for a British 

 example of Novak's Proboscina Suessii (Bibliogr. 34), which, in 

 its clavate character, it closely resembles ; but the number of zooecia, 

 and their peculiar character, entirely exclude the possibility of 

 confounding what I believe to be two distinctly characteristic 

 forms. 



14. Proboscina hunstantonensis, sp. nov. (Plate XIX. figs. 5 a, 



5 b.) 



Zoarnum multiform or irregular ; branches originating from a 

 small discoid body, and then spreading in various directions. 

 Zooecia : originating cells simple, and generallj^ unlike the zocecia in 

 the more fully developed colony. Here the zooecia are flask-like, 

 rugose, and very variable in their general outline ; orifice contracted 

 and of less diameter than the cell. Gonoecium a peculiarly flask- 

 shaped cell, contracted towards the aperture. 



Habitat. On Inoceramus : IVrebratuIabij^licata. Fossils No, 17 a t 

 (type) ; No. 16 a; a'^, slightly varying in the character of the 

 cells. 



Horizon. Eed Chalk, Hunstanton. 



This peculiar species is rather common in the Red Chalk ; 

 but the colonies are often found in such out-of-the-way places, and 

 on the larger fossils, that it is by no means easy to get a form 

 suitable for drawing, either of the species or of its variety mentioned 

 below ; and it is impossible to get a whole colony under the micro- 

 scope at once. 



15. Peoboscina hunstantonensis, Vine ; var. ampliata, nov. (Plate 

 XIX. figs. 6 «-6 d.) 



This well-marked variety is similar in many respects to the foregoing 

 species ; but, as there is a difference in the character of the " ovicell " 



