• 277 
Bryozoa of the Bay of Naples. 
centre they are simply acuminate or trifid, while near the 
circumference in the quincuncial cells they are trifid. In the 
centre are three or four tumid areas, with ribs at the edge, 
forming a row of pores round them. These ooecial swellings 
often extend among the rays ; and the slightly funnel-shaped 
tubes opening out the ocecium are three times as wide as the 
zocecial cells. 
This in many respects resembles D. radiata. It is not the 
D. verrucaria of Manzoni (Bry. foss. Ital. 4 a contr. pi. vi. 
fig. 33), which may be Diastopora fabellum. 
Hah. Arctic seas generally, Novaja Semlja (8m.) ; Scot¬ 
land; Naples, 40 fathoms and deeper. 
106. Discoporella hispida , Flem. 
Loc. Pliocene : Bruccoli. Living : Scandinavia (Sin.) ; 
Naples, littoral. 
107. Discoporella mediterranean Blainv. 
The only two specimens I have are flat on the underside, 
with a wide attachment. On the upper surface the short rays 
are raised up in bundles round the circumference. The centre 
has a thin calcareous papyraceous cover divided into raised 
irregular and round divisions ; at one edge of these cell-like 
areas there is sometimes a round opening. 
I find the front surface so similar to the British-Museum 
specimen of Defrancia lucernaria, Sars, that I am convinced 
they are very closely allied, and perhaps may be northern 
and southern varieties. 
108. Radioporapustulosa, D’Orb. (PI. XXIV. fig. 15.) 
Radiopora pustuhsa, D'Orb. Prodr. p. 176; et Pal. Fran£. p. 994, 
pi. 649. tigs. 1-4. 
Rays uniserial, mouths of cells and cancelli of the same 
size ; peristome of radial cells raised, and acute (a) on the inner 
side (the side nearest the centre of the zoarium) ; peristome 
of cells beyond the regular rays trifid (&), the centre prong 
much the longest, cells confluent. 
It may also be the R. simplex of Busk; but from the small 
fragment it is difficult to decide. Two specimens appear quite 
thin, as if only a thin covering; another is 2-4 millims. thick, 
and the broken surface shows long zooecial and cancelli-tubes, 
which, however, in the lower half are divided across the axis 
by septa, giving this part a somewhat cellular appearance; 
but no separate layers are distinguishable. The surface 
of the colony is irregularly raised and depressed, depending 
Ann. & Mag. N. Hist. Ser. 5. Vol. iii. 19 
