278 DR. J. S. BOWERBANK ON [Apr. 6, 
ton of the Farrea. Theother groups consisted of two small densely 
compacted masses of very minute cylindro-stellate spicula with 
acutely conical radii: one of these groups just filled a skeleton-area ; 
the other, of a similar size, was not entangled in the skeleton-struc- 
ture, but adherent to it externally ; and within the little mass were a 
few spiculated biternate spicula, like those found in Farrea occa, 
figured in vol. i. plate ix. fig. 199, ‘Monograph of British Spon- 
giade.’ A few minute anchorate spicula of different forms were 
also observed among the skeleton-fibres. These occurrences would 
seem to indicate that the locality whence this sponge was obtained 
would be a very prolific ground for scientific dredging. I received 
this sponge from my late friend Mr. H. Deane, with the specimens 
of Farrea gassioti and pocillum ; and I therefore presume it is from 
a West-Indian locality. 
Farres Lavis, Bowerbank. 
Sponge-mass unknown. Dermis furnished with a quadrilateral 
siliceo-fibrous network. Rete armed at the angles oppositely exter- 
nally and internally with smooth elongate-conical attenuated spicular 
defences. Fibre smooth and spineless ; central canals large and very 
distinct, confluent at the angles, frequently two, rarely three, in 
each fibre. Dermal membrame thin, aspiculous. Sareode amber- 
brown. 
Colour, in the dried state, brown ? 
Hab. West-Indian seas ? 
Examined in the dried state. 
I am indebted to my friend Mr. Henry Lee for my knowledge of 
this species. He found it on some sand dredged up by Mr. Marshall 
Hall during his voyage in the ‘ Norna.’ The sand was preserved 
by Mr. W. Saville Kent, and was presented by him to my friend. 
Mr. Lee sent me the specimen for examination. It is a fragment of 
a very fragile tubular sponge, which consists of only one layer of 
siliceo-fibrous tissue. It is five lines in length, and does not exceed 
three lines in diameter. The form of the fibres and their mode of 
arrangement very closely resemble those of the dermal tissue of 
Farrea ocea; but they differ from those of that species in being 
smooth and quite destitute of spines, and also in being furnished 
abundantly with central canals. The conical spicular external de- 
fences at the angles of the rete differ also from those of F’. occa, as, 
instead of being imbricated as in that species, they are quite smooth 
and each is furnished with a well-developed central canal. The 
canals in the fibres of the rete form a very prominent feature in this 
sponge; they are large and well developed, and are confluent at 
the angles of the network. There are frequently two in each fibre, 
one appearing to emanate at each end; when they meet they do not 
unite, but run parallel to each other to their opposite angles. 
The dermal membrane is preserved in a few of the areas of the 
network. It is thin and transparent, and is well coated with sarcode, 
but I could not detect a single spiculum in any part of it. The 
