242 Mr. H. B. Brady on Keramospheera. 
cular, and fibrous layers of the latter. ‘The subcuticular layer 
is in most instances difficult to be distinguished ; but in one 
species of Polynoé I find that certain vesicular appendages 
scattered over the surface of the elytra show distinctly beneath 
the delicate cuticle a layer of polygonal squames, and im the 
interior a series of fibres which radiate from the base of the 
vesicle to its outer wall, and may represent the fibrous layer 
of the wall of the scale, or may be special nerve-endings. 
(4) The sexual products reach the exterior through aper- 
tures in the bases of the parapodia; and the ova are carried by 
ciliary action to the under surface of the scales, where they 
remain, adhering by means of a viscid matter, till the embryos 
are well advanced. Impregnation probably takes place while 
the eggs are in this situation; and I have found stiil crowding 
in great masses under the scale embryos which had reached 
the advanced cephalotrochous stage first described by Sars * 
in Polynoé cirrata. 
Sydney, July 1, 1882. 
XXII.—WNote on Keramosphera, a new Type of Porcellanous 
Foraminifera. By Henry B. Brapy, F.R.S. 
[Plate XIII. ] 
TowArps the end of last year I received from the ‘ Challenger’ 
office a little white spherical Foraminifer, accompanied by a re- 
questthat I wouldidentify the species. Iwas then far from home, 
and without any better means of examining the specimen than 
that afforded by a simple magnifying-glass, viewed by which 
it appeared to be nothing more than a rather fine example of 
the globular variety of Tinoporus (Gypsina)—somewhat 
larger than usual for a recent specimen of that genus, but in- 
ferior in size to some of those found in the fossil condition, 
and scarcely so regular in contour. Owing to absence from 
England, I had no immediate opportunity of reverting to the 
subject, and had scarcely thought again about it, until a few 
weeks ago, when, in conversation with Mr. Murray, I learnt 
that the specimen had been sent to me because it appeared to 
differ in important particulars from Gypsina, and also because 
it was found at much greater depth than usually affected by 
that type. At the same time he placed in my hands another 
similar shell, which had been obtained by further search in the 
* “Zur Entwickelung der Anneliden,” Archiv fiir Naturg. 1846, 
pp. 11-19. 
