Hexactinellidte and LithistidsB. 447 



Mr. Marshall Hall's yacht ' Noma ' in 1870, on the N.W. 

 coast of Spain and Portugal, by Mr. Saville Kent ; and here we 

 shall find a dead specimen of Aphrocallistes Bocagei now broken 

 into pieces, but when entire a little larger and of the same 

 kind as that last described, — also a dead specimen of Farrea 

 occa, consisting of a bunch of short tubes slightly trumpet- 

 shaped, and open at their free ends, branching off from a main 

 axis (Month. Microscop. Journ., Nov. 1870, pi. lxiv. fig. 12), 

 both dredged up from a muddy bottom, and both filled with 

 the mud. 



Further, on a bunch of dead Lophohelia prolifera, there is 

 another small but living specimen of Aphrocallistes Bocagei, 

 together with several young or embiyonic specimens here and 

 there on the branches of the former, some of which are not more 

 than - 9 V of an inch in diameter, which, on microscopical exami- 

 nation, present the spicules of Aphrocallistes Bocagei, that at 

 the same time are identical with those figured by Schmidt (/. c.) 

 as illustrative of his Lanuginella pupa, which, as may be ob- 

 served by his figure of Aphrocallistes Bocagei {pp>. cit. pi. ii. 

 fig. 1), grew in great numbers on this specimen. 



Lastly, on one of the branches of the same bunch of Lopho- 

 lielia prolifera may be observed the unique specimen of Aulo- 

 dictyon Woodwardii, discovered, described, and figured by Mr. 

 Kent (op.et I. cit.). It also, like Farrea occa,is a tubular structure 

 of rectangular lattice-like vitreous fibre, but otherwise appears 

 to have been branched and closed at the extremities like Aphro- 

 callistes Bocagei ; still the specimen is so small, being not more 

 than half an inch lons\ and the ends of the branches are so 

 broken off, that, with the exception of its growing from a branch 

 of the Lophohelia like Farrea occa (that is, spread out and not 

 attached by a disk-like end like Aphrocallistes Bocagei), nothing 

 more can be said of its general form. 



Lastly, I have to notice a deciduous specimen of Farrea occa, 

 about the same size and form as that last-mentioned, which was 

 dredged up from the Caribbean Sea in about " lat. 14° 2' N., 

 and long. 77° 42' W., in 1500 fathoms," and submitted by Mr. 

 Gassiot (to whom the vessel belonged whose captain obtained 

 it) to Dr. Gray, and by the latter to myself for examination. 

 It is also much broken, but measures an inch long by about 

 the same in transverse diameter. Also, from the same locality, 

 a little stick-like fragment about \\ inch long and \ inch 

 broad, composed of vitreous fibre like that of Farrea, but solid, 

 bleached, and rounded in its contour, which is rendered very 

 irregular by a dissolving action that has been going on 

 in the fibre both inside and out for some time ; and three 

 specimens of a new species of Farrea, which was funnel- 



Ann. & Mag. N. Hist. Ser. 4. Vol. xii. 31 



