eo oneal Royal Microscopical Society. 247 
company with Pheronema, Hyalonema, and numerous other abyssal 
forms. The balance of evidence is certainly in favour of the cor- 
rectness of the latter of these two suppositions, no sponge belonging 
to the same group having yet been met with within the littoral 
zone, and the sponges themselves presenting the aspect of having 
been partially immersed in the same semi-calcareous ooze in which 
their congeners just referred to are known to occur. 
Hyalonema lusitanica, Gray. 
One or two specimens of this form were taken, particulars in 
connection with which I reserve for future publication. 
Lanuginella pupa, Os. Schmidt. 
This species has only just been described by Dr. Oscar Schmidt 
in his ‘Spongien-Fauna des Atlantischen Gebietes.’ The examples 
examined by Dr. Schmidt were attached to a specimen of Aphro- 
callistes Bocaget in the same manner that those taken by ourselves 
are attached to a branch of Lophohelia prolifera. 
The sponge body of Lanuginella pupa is cup-shaped, and rarely 
exceeds one-eighth of an inch in height; the supporting skeleton is 
composed of a loose interlacement of hexradiate spicula of various 
sizes, having the appearance under a low power of the microscope of 
a continuous reticulation, in consequence of the shafts of the spicula 
being brought in contact with one another through the medium of 
the investing sarcode. 
These hexradiate spicula are of various sizes, with long, slender, 
smooth, and acutely terminating radii, resembling in miniature the 
larger form alluded to in the description of Askonema; occa- 
ae the basal extremity of the perpendicular shaft is slightly 
inflated. 
Scattered in the sarcode are minute multiradiate spicula with 
capitate extremities, which must be referred to the “spinulo-multi- 
furcate, or spinulo-trifurcated, or quadrifurcate hexradiate stellate ” 
types of Bowerbank, though at the same time it is a matter of 
regret we cannot express our meaning in fewer words. 
In examining a slide prepared from this sponge I have encoun- 
tered some minute capsular bodies which appear to partake of the 
nature of reproductive gemmules, and which will, I think, prove to 
be the first record of their presence in the particular group of the 
CaLicisponci, to which this form is referred in my appended system 
of classification. Two of these bodies were observed and are figured 
at Plate LXV.; the smaller one of the two, Fig. 6, presented the 
appearance of an ovoid, membranous, amber-coloured capsule, having ~ 
at either pole a radiating fascicle of spicula, which embraced and 
guarded the extremity of the capsule to which it was attached. The 
larger, about double the size of the last, exactly resembled it, with 
the exception that minute simple hexradiate spicula were dispersed 
