302 
ADDENDA ET CORRIGENDA. 
UNREPRESENTED SPECIES, 
beyrichii, Hamm, 1881. 
Pennipora beyrichii, Hamm, 1881. Bry. mastr. Ob. -Sen. i., Cycl. p. 37. 
Ohar.— Z oarium very large and thick, with short branches, and the aspect of 
a Cerioporoid composed of many layers of zooecia. Apertures crowded, sub- 
equal ; in places they are arranged in groups. 
Distrib. — Maastrichtian : Maastricht. 
CYCLOSTOMATA CANCELLATA. 
HORNERID.^. 
HORNER A, Lamouroux, 1821. 
Yol. I. p. 367. To Unrepresented Species add : 
6. sparsipora, Hennig, 1894. 
Syn. Hornera sparsipora, Hennig. 1894. Bry. Sver. Krit. ii., Cycl. : Lumls 
Univ. Arsskrift, vol. x.\x,, Acta Physiogr. Xo. viii. 
pp. 13-15, pi. i. tigs. 7, 8 ; figs. 5, 6, p. 14. 
Char. — Zoarium of crowded thick branches, w'ith many of the apertures in 
transverse rows of about four apertures in a row ; the rows are usually opposite. 
In parts of the stems the apertures are described as irregularly arranged. 
Pores on the reverse face small and sparsely scattered. 
Distrib. — Senonian — Campanian : Balsberg. 
Aff. — This species is most allied among described Cretaceous species to 
von Hagenow’s H. langethali from Riigen ; but von Hagenow named two 
Senonian species of Hornera from Sweden H. compressa and H. trigonopora 
(Bry. maastr. Kr. p. 25), and may have founded one of those on this species. 
H. sparsipora resembles Eocene rather than Cretaceous species. 
PETALOPORIDJE. 
PETALOPORA, Lonsdale, 1850. 
Yol. I., after p. 382 : 
4. Petalopora consimilis (Ulrich),^ 1882. 
Synonyhy. 
Heteropora consimilis, Ulrich, 1882. Amer. Palteoz. Bry. ; Journ. Cincinnati 
Soc. Nat. Hist. vol. v. p. 145, pi. \'i. fi.g. 11. 
Char. — Zoarium of narrow branches (2^3 mm. in diameter). 
Apertures large and surrounded by a ring of maculae. 
^ It is probable that Ulrich’s other species, Heteropora attenuata, also from 
Pulaski County [ibid. p. 144, pi. vi. fig. 12), is also a Petalopora, but the original 
figure rather resembles a Sparsicavea. 
