275 
Bryozoa o f the Bay of Naples. 
Zoarium erect, cylindrical, dividing dichotomously several 
times. Zooecia, tubular projecting cells, the tubes and inter¬ 
spaces usually more or less rugose, surface finely punctured. 
The cells are closed after a time by a diaphragm across 
the tube, about the point where it becomes free. 
Loc.. Chalk, dtage 22 e , as ragosa : Vendome, Troot (Loir et 
Cher), Veules (Seine Inf.). Miocene : Kostel, Lapugy, Wildon, 
St. Nicolai, Gartschenthal, Steinabrunn, Niederleis, Nussdorf, 
Grussback. Pliocene : Bruccoli (A. W.). Living: Naples, 
30-40 fathoms. 
102. IIornera frondiculata, Lamx. 
Horner a frondiculata, Manzoni, I Bri. del Plioc. di Castrocaro, p. 42, 
pi. vii. fig. 80; id. I Bri. foss. del Mioc. d’Austr. edUngh. p. 8, pi. vi. 
fio- 22. 
u 0 . 
Loc. Miocene : Austria and Hungary. Pliocene : Castro¬ 
caro (d/.), Sceaux, Done {Mich.). Crag: Ficarazzi, Bruccoli, 
Pruma, Gerace, &c. (Sicily). Living: Adriatic, Mediter¬ 
ranean; Naples, 40 fathoms and deeper. 
103. Filisparsa tuhulosa , Busk. 
Hornera violacea, var. /3. tuhulosa, Busk, Cat. of Mar. Polvz. p. ly 
pi. xviii. figs. 1, 4. 
Filisparsa, sp., Manzoni, Bry. du Plioc. de Rhodes, p. 69, pi. iii. 
fig. 18, a Scb ; Mem. de La Soc. Geol. de France, 3 e ser. vol. i. pt. ii. 
I am indebted to Mr. A. M. Norman for the sight of a true 
northern Hornera violacea , and see that the present form has 
hardly any thing in common ; but I cannot doubt that it is the 
var. tuhulosa of Busk, and therefore retain his specific name. 
As the museum specimen is not yet returned, I have not had 
the opportunity of comparison. 
The genus Filisparsa is, as pointed out by D’Orbigny, 
intermediate between Hornera and Idmonea ; and somewhat 
similar forms are known from the European chalk, Miocene, 
and Pliocene, and also the Australian Tertiaries. I am, how¬ 
ever, somewhat in doubt as to whether the genus will perma¬ 
nently stand. 
The zooecia, which are only upon the front of the branch, 
are long and free for a great part of their length ; the zooecial 
tubes are 0T7 millim. in diameter; dorsal surface smooth, 
with fine punctures ; lines of cells and of growth indistinct. 
Ooecium irregular enlargement of the front of the branch. 
Loc. Pliocene: Rhodes. This is very common from 
40 fathoms in the Bay of Naples; and I am surprised it has 
not been noticed before from the Mediterranean. In habit 
it much resembles Entalophora proboscidea , and perhaps’ has 
been overlooked on that account. If wc imagine E. prohosci- 
