INTERS AEIA. 
355 
? D. 1392. Two Avorn fragments identified by Vine (on slide). Maastrichter 
Kreide. Maastricht. Vine Coll. 
D. 3424. A worn zoarium (on slide). INtaastricliter Kreide. Maastricht. 
Van Breda Coll. 
4. Inversaria tuberosa (cTOrbigny), 1853. 
Synony^iy. 
Multinoclelea tuberosa, d’Orhigny, 1853. Bry. Cret. p. 615, pi. 736, figs. 9-15. 
Meliceritites ,, Pergens, 1890. Revision, p. 395. 
,, ,, Pergens, 1893. Bry. St. Pat.: Bull. Soc. beige Geol. 
vol. vi., Pr. Vb. p. 212. 
,, ,, Canii, 1897. Bry. St. Cal. : Bull. Soc. geol. Fr. ser. 3, 
vol. XXV. p. 751. 
Diagnosis. 
Zoariinn of stout, cyliiicTrical, dichotomous branches, with 
numerous external laniinfe. JN’o tubercles. 
Zooecia externall}^ rhomboidal ; not bounded by ridges. 
Apertures trigonal, usually smaller than the suboral area. 
Peristomes slightly raised ; usually in regular transverse rows, 
but locally irregular. 
Avicularia numerous ; apertures slightly larger than those of the 
zooecia ; a large mandibular depression. 
Closed zooecia numerous. 
Distribution. 
British : 
Chalk: S.E. England. 
Foreign : 
Senonian — Maastrichtian : Royan. 
Santonian : Saintes, etc., Charente-Inferieure. 
Coniacian : Sainte - Christophe, Tours, Joue, and St. 
Paterne, Indre-et-Loire ; Villedieu, Loir-et-Cher. 
Turouian or Coniacian: Yendome, Lavardiu, Les Roches, etc., Luir- 
et-Clier. 
Turonian — Angoumian : Merpins, Cliarente ; Villardin, Loir-et-Cber. 
LIST OF SPECIMENS. 
D. 4536. A zoarium (in chalk). Chalk. S.E. England. Toulmin Smith Coll. 
D. 4827. A central axis with part of the external lamella (on slide). 
Turonian : Craie marneuse. Villardin, Loir-et-Cher. Purchased 
1898. 
?D. 4820. A central axis (on slide). Turonian: Craie marneuse. Villardin 
Station, Loir-et-Cher. Purchased 1898. 
