ADDENDA ET CORRIGENDA. 
CYCLOSTOMATA TUBULATA. 
DIASTOPORID^. 
PROBOSCINA, Audouin, 1826. 
Vol. I. pp. 21, 29. To Synonyms of Prohoscma (p. 21) add : 
Leptopora, d’Orbigny, 1849. Genres nouv. Moll, bryoz. ; Rev. Mag. Zool. 
ser. 2, vol. i. p. 504. 
Leptopora elegans to be added to the Synonymy of Prohoscina 
fasciculata (p. 29). 
DIASTOPORA, Lamouroux. 1821. 
Vol. I. p. 139. Add to Piastopora^ Unrepresented Species: 
19. composita (Hennig), 1894. 
Syn. Mesenteripora composita, Hennig, 1894. Bry. Sver. Krit, ii., Cycl. : 
Lands Univ. Arsskrift, vol. xxx., Acta Physiogr. 
No. viii. pp. 5-6, pi. i. figs. 14-17 ; fig. 2, p. 5, 
and fig. 3, p. 6. 
Char. — Zoarium rounded ; composed of sheets arranged in concentric groups. 
The sheets are bilaminar. Peristomes long and well raised, and widely spread 
over the sides of the sheets, but crowded at the margin. Apertures round, 
somewhat constricted. 
Distrib. — S enonian— Campanian — Zone of Belemnitella mucronata (beds with 
Actinocamax mamillatus) : Balsberg. 
IDMONIID^. 
IDMONEA, Lamouroux, 1821. 
Vol. I. p. 150. To Synonyms of Idmonea hagenowi (Shai'pe) 
add: 
Actinopora {Radiopora) elegans, Etheridge & Newton, 1878. Cat. Cret. Foss. 
Mus. Pract. Geol. p. 6. 
Vol. I. p. 155. To Unrepresented Species of Idmonea add: 
4. radiata (Hennig), 1894. 
Syn. Semiclausa radiata, Hennig, 1894. Bry. Sver. Krit. ii., Cycl. : Lunds 
Univ. Arsskrift, vol. xxx., Acta Physiogr. No. viii. 
p. 8, pi. i. figs. 2, 3.^ 
,, ,, Hennig, 1894. Om Ahussandstenen : Geol. For. 
Stockh. Forh. vol. xvi. p. 510. 
