464 JANE STEPHENS: ATLANTIC SPONGES 



Reniera sp. 



Station 482. Houtjes Bay, Saldanha Bay, shore. 19th May 1904. 



The sponge is growing in a brownish encrustation over fragments of Pachychalina 

 hospitalis n. sp. The skeleton is rather irregular. It consists of fibres containing 

 multiserially arranged oxea which are connected by single oxea, or by bundles of 

 several oxea. 



Spicules. — Oxea, 0'15-0'17 mm. in length by 0'008 mm. 



Reniera sp. 



Station 482. Reit's Bay, Saldanha Bay, shore. 21st May 1904. 



Sponge spreading in a thin encrustation over a stone. The surface is slightly 

 hispid. The colour in spirit is yellowish white. The skeleton is rather confused ; it 

 is partly unispicular and partly composed of ill-defined fibres containing multiserially 

 arranged oxea. 



Sjncules. — Oxea, 0"12-0"13 mm. in length by 0'006 mm. 



Order MYXOSPONGIDA. 

 Family Halisarcid^e. 



Halisarca dujardini Johnston. 



Station 482. Reit's Bay, Saldanha Bay, shore. 21st May 1904. 



The sponge is growing in the form of a thin encrustation over two large pieces 

 of Laminaria-\ike roots, in company with small cushion-like specimens of Reniera 

 cinerea. 



The geographical distribution of the species is wide. It has been recorded for the 

 northern, western, and Mediterranean coasts of Europe ; for East Greenland and, 

 doubtfully, for the Red Sea. A variety has been recorded for the Straits of 

 Magellan. 



