686 A. W. WATERS ON FOSSIL CYCLOSTOMATOUS 
Mr. Etheridge, jun., are exactly similar to some I have from the 
Valangian of St. Croix (Jura), and also to specimens collected from 
the Chalk of Maestricht and of Royan. The internodes are about 
0-1 millim. long, and there are usually 8-10 in a complete circle. 
The ovicells are as yet unknown. ‘The size of the Paleozoic form is, 
according to Ulrich’s description, about the same size as the European 
specimens. 
Loc. This species was very common and widely distributed in the 
European Chalk. Itis found in almost all localities in the Senonian 
of France and Belgium and also in the Cretaceous of N. America 
(G. § H.),in the Pliner of Plauen and Strehlen (Vov.), in the Green- 
sand of Essen, in the Valangian of the Jura, and in the Trenton 
strata, High Bridge, Kentucky (Ulr.). Mt. Gambier. 
8. ENTALOPHORA RARIPORA, d’Orb. 
Entalophora raripora, @ Orb. Prodr. Pal. Strat. p. 267; Pal. Frang. 
p. 787, pl. 621. figs. 1-3, pl. 623. figs. 15-17; Beissel. Bry. 
Aachener Kreidebildung, p. 82, pl. x. figs. 120-128 ; Novak (pars), 
Beitr. z. Kenntn. d. Bry. der bohm. Kreide, p. 32. 
Pustulopora virgula, Hag. Bry. Mastr. p. 17, pl. 1. fig. 3. 
Entalophora wauensis, d Orb. Pal. Frang. p. 781, pl. 616. figs. 12— 
14, 
Entalophora attenuata, Stol. Bry. von Latdorf, p. 77, pl. i. fig. 1; 
Reuss. (?) Bry. Crosaro, p. 74, pl. xxxvi. figs. 1, 2. 
Entalophora anomale, Manzoni, Bri. Mioc, Austr. ed Ungh. p. 10, 
pl. ix. fig. 33. 
Entalophora Haastiana, Stol. Bry. Orakei Bay, p. 102, pl. xvii. 
figs. 4, 5. 
Pustulopora probosadea, Busk, Cat. Mar. Polyz. pt. i. p. 21, 
pl. xvi. a (right figure). Also Milne-Edwards; Heller; and Waters, 
Bry. of Bay of Naples, Ann. & Mag. Nat. Hist. ser. 5, vol. ii. p. 274, 
1879. 
I have prepared sections of recent specimens, and also some from 
the Chalk, Miocene, and Pliecene, without being able to find any 
difference. The aperture is about 0°16 millim. diam. 
Loc. Fossil: From the Valangian of St. Croix and Pontarlier 
(Cant. Vaud), general in the European Senonian. Miocene: Austria, 
Hungary, and Italy. Pliocene: Italy, Sicily; also from Orakei Bay 
(Stol.), Curdies Creek, Muddy Creek, Bairnsdale, Mt. Gambier, 
Aldinga, and River Murray Cliffs. 
9. ENTALOPHORA NEOCOMIENSIS, d’Orb. 
Entalophora neocomiensis, d’ Orb. Pal. Fr. p.782, pl. 616. figs. 15-18. 
? Bidiastopora neocomiensis, d’Orb. loc. cit. p. 800, pl. 784. figs. 9— 
11. 
Cricopora pulchella, Rss. Polyp. Wien, p. 40, pl. vi. fig. 10. 
Spiropora pulchella, Rss. Foss. Anth. u. Bry. von Crosaro, p. 287 
(75), pl. xxxvi. figs. 4, 5. 
Pustulopora pulchella, Manzoni, Bri. del Mioc. Austr. ed Ungh. 
p. 11, pl. ix. fig. 35. 
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