125 
Reniera clathrata Dendy. 
1895. Reniera clathrata, Dendy. — Catalogue of Non-Calcareous Sponges 
etc. Proc. Roy. Soc. Victoria (N. S.) VII. 
Perseverance Harbour, Campbell Isl. Understones, at low water. 9.XII.1914. 
Irregularly lumpshaped; oscula on small conic or almost funnel- 
shaped elongations, diameter 0,6 mm. Greatest extension of spec- 
imens in hånd 12 mm. Surface finely hispid. Dermal-membrane 
I very thin, covers several subdermal-cavities, into which very small 
ostia lead. Consistence soft, elastic. Colour pale gray. 
Skeleton very beautifully regular; main fibres radiate perpend- 
i icularly towards the surface, by connecting spicules intersected 
I into rather regular squares, the sides of which are ca. one spicule 
; long; in the main fibres 1—3, most often 2, spicules are lying side 
! by side. 
I Spicules: oxea; of typically Renieroid structure; slightly curved 
in the middle, of even thickness for the greater part, then tapering 
; to the rather sharp-pointed end. Many developmental forms are 
, found. Length from ca. 85 p —115 p, by a thickness of ca. 5 p. 
Although Dendy gives the length of oxea to about 83//, and 
; although the fibres in the specimens in hånd seemingly are more 
: pronounced, it is without much hesitation that I identify my spec- 
, imen with Reniera clathratra Dendy. 
Reniera sp. 
j Port Ross. Ca. 10 f. Sand, algae. 25/XI.1914. 
I A very macerated specimen, devoid of dermal-membrane and 
, most organic matter; lump-shaped. Skeleton typically Renieroid, 
without special fibres; meshes marked off by single oxea; these 
latter rather stout, slightly curved; length ca. 220 p, by a thick¬ 
ness of ca. 13 p. 
Genus Pachychalina, O. Schm. 
! Pachychalina densa nov. sp. 
1 ■ 
I Carnley Harbour. 45 f. Sandy clay. 6/XII.1914. 
I Fig. 8 Isl. Carnley Harbour. Beneath stones at the coast by low water. 
j 2/XII.1914. 
1 2 specimens. Irregularly cylindriform, for on the sides are loc- 
ated a few outgrowths, apparently a beginning budding-process. 
