A Revision of the British Jurassic Bryozoa. 287 



XXXIX. — A Revision of the British Jurassic Bryozoa. — 

 Part VI. The Fascigeridse, Theonoidte, Dactylethrata, and 

 Trepostomata. By J. W. 



[Concluded from p. 201. 



Family Fascigeridae, d'Orbigny. 



Diagnosis. — Cyclostomata Tubulata in which the zocecia 

 are simple open tubes. These arise from a small cupuliform 

 or discoid base (the PeJagia or Defrancia stage). The zooecia 

 are monomorphic and greatly elongate. The zoarium con- 

 sists of tufts, and the apertures all occur at the ends of the 

 tufts. 



Genus 1. Fasciculipora, d'Orbigny, 1846. 



Fasciculipora, d'Orbigny. Voyage dans l'Ame*rique mendionale, t. v. 

 pt. 4, Zooph., plates 1839, text 1846, p. 20. 



Diagnosis. — Fascigeridae in which the zoarium consists of 

 long tubular zooecia grouped into bundles which branch 

 irregularly ; these form a loose, open, tufted zoarium, for the 

 bundles are not connected by platforms nor do they anasto- 

 mose. The apertures are at the ends of the branches, and 

 never on the sides, and occur in isolated groups. 



Type species : F. ramosa, d'Orbigny, 1839 and 1846. 



1. Fasciculipora Waltoni, Haime. 



Fasciculipora Waltoni, Haime, 1854, Bry. Jur.,Me"in. Soc. g&>l. France, 

 s6r. 2, t. v. p. 200, pi. x. fig. 4. 



Diagnosis. — The branches of the zoarium each contain 

 about thirty zooecia ; the branches are marked externally by 

 longitudinal ridges ; the branching is irregular. 



Distribution. — Great Oolite, Hampton, near Bath. 



Genus 2. Apsendesia, Lamouroux, 1821 *. 



Diagnosis. — Fascigeridas in which the zoarium rises from 

 a cup-shaped disk. The bundles of zooecia in the adult are 

 long and are grouped in long irregularly sinuous series. 

 There are no platforms. The zocecia all open upon the 



* Lamouroux, Expos. m6th. p. 81. The name is spelt Apseudesia by 

 some authors. 



