PBOBOSCINA. 71 



ities. This species is most nearly allied to P. desoudini^ 

 Haime, of which it may be a synonym. Some of the zooecia 

 appear identical, but whereas these are associated in P. desoudini 

 with regularly cylindrical, tubular zocecia, in this species they 

 occur with hippothoiform zocecia. Not having seen specimens, I 

 must leave the matter in doubt. Its nearest Cainozoic ally is that 

 described by Hincks as Stomatopora fasciculata. 1 The formula of 

 this is 2, 2, 1, 1-4, whereas that of P. morinica is 1, 2, 0, 1-4. 

 The recent species may be distinguished by not having the 

 short, stumpy zocecia, and by having lower peristomes than its 

 Jurassic ally. 



I cannot identify Vine's type of P. olscura in his collection, and 

 feel doubts as to the correct position of the species ; but it appears 

 to be a young specimen with a loose zoarium. 



SPECIMEN. 

 D. 1840. Inferior Oolite Pea Grit. Cleeve HiU. Holl Coll. 



7. Proboscina spatiosa, Walford. 



SYNONYMY : 



Proboscina spatiosa, Walford, 1889, Bry. Shipton, pt. i. : Quart. Journ. Geol. 

 Soc. vol. xlv. pp. 566-7, pi. xvii. figs. 1-3; pi. xviii. 

 figs. 1-5. 



,, Gregory, 1895, Rev. pt. ii. : Ann. Mag. Nat. Hist. ser. 6, 



vol. xvi. p. 450. 



DIAGNOSIS : 



Zoarium of irregular, narrow, irregularly branching bands, each 

 composed of from one to four zocecia in width. 



Zooecia pyriform or subpyriform, of medium length, coarsely 

 wrinkled and punctate. 



Peristomes much raised. Apertures elliptical or circular. 



Formula. p, c, I, r = 3, 2, 1, 1-4. 



1 Stomatopora fasciculata, Hincks, non Reuss, Brit. Mar. Polyz. p. 441, 

 pi. lix. figs. 4, 5. This name is preoccupied by a Cretaceous species, and I have 

 therefore had to rename it, which I have pleasure in doing, after the author who 

 has so well described the recent form, Proboscina hincksi. 



