Sponges from South Australia. 113 



throughout the tissue generally, but especially in the dermis ; 

 No. 1 in the fibre of the subclermal cavities, and, with Nos. 2 

 and 3, throughout the spiculo-fibre of the parenchyma. Size 

 of specimen about 1^ in. high and l-j 8 2 x -j 9 ^ horizontally in 

 its greatest dimensions. 



Hah. Marine. 



Loo. Port Phillip Heads, S. Australia. Depth &c. not 

 given. 



Obs. This is an extremely interesting specimen, because the 

 pore-areas are circumscribed, and open, through the subdermal 

 cavities, directly into the large excretory canals, which present 

 the circular folds to which I have alluded throughout their 

 course, so that by these folds they can be unmistakably 

 traced from the pore-areas to the vents, that is, from one end 

 to the other (fig. 5). In this respect too they correspond with 

 GrayeUa cyaihopJiora ( l Annals,' 1869, vol. iv. p. 192, pi. vii. 

 fig. 5); the spiculation, however, is more like that of Halichon- 

 driapvAtuhsa ( l Annals,' 1882, vol. ix. p. 285, pi. xi. fig. l&c), 

 which is a branched sponge with similarly circumscribed pore- 

 areas, from the South Atlantic Ocean about the Falkland Is- 

 lands; while there is a large dried specimen of GrayeUa cyatho- 

 phora in the British Museum (No. 15, registered 71.6. 5. 1) 

 which came from the neighbourhood of the Cape of Good Hope. 

 Dr. Bowerbank's term " angulated " is applied to an equian- 

 chorate whose shaft has apparently a triple curve, viz. a large 

 one in the centre and a small one at each end. 



Suberites Wilsoni, n. sp. 



Massive, pyramidal, tending towards compression. Con- 

 sistence hard, solid, heavy. Colour bright carmine-red. 

 Surface more or less unevenly reticulated, with irregular, 

 depressed intervals, or generally nodulated ; or covered with 

 oculiform areas in juxtaposition, like Bhaphyrus Grifjithsii, 

 Bk. Pores~in the interstices of the dermal reticulation, or 

 confined to the pupillary aperture of the oculiform areas. 

 Vents scattered over the surface generally. Internally com- 

 posed of cancellated sarcode, half filled with fine and coarse 

 sand-grains together with other foreign microscopic objects, 

 which make the specimen so heavy ; traversed by the 

 branches of the excretory canal-system, terminating at the 

 vents mentioned. Spicule of one form only, viz. pin-like, 

 consisting of a smooth, curved, simple acuate, more or 

 less globularly or elliptically inflated, near to, but at a 

 variable distance from, the large end, sometimes so slightly 

 as to reduce the form to a simple acuate ; diminishing 

 gradually towards the thin end, which is not only obtusely 



