288 Soutlicrii Cross. 



A prominent lunlto is present on the rr<»nl surface of each 

 zocvciuni, and at a little distance from the uml)o is a double row of 

 jiores sejiarated by a sharp line. A well-marked shield-like area is 

 marked olf on the front of each cell. The pores are semi-circular 

 antl sharj>-edged in the youn^fer, but square and with crenulated ed^'es 

 in older cells; the pores are not continued round the orifice, but stop 

 short at the ends of the proximal edge ; a row of pores is present, 

 however, round the base of the ooecium. 



The stout oral spines, usually four in number, are articulated at 

 the base. 



The double row of pores is present in the type specimen from 

 Kerguelen, but they are not nearly so apparent or well defined. 



Locality. — Cape Adare, 8 fathoms, on seaweed. 



JJiatribidio/i. — Kerguelen Island ; Cape Adare. 



SMITTIA LANDSBOROVI. 



18411. Lepralia landsborovii, Joliiistou, Brit. Zouph., Ed. II., p. 310. 

 1880. Smittia landsborovii, lliucks, Brit. Mar. Pol., p. 341. 



A small avicularium with spatliulate mandible is sunk deep in 

 the peristome, the secondary orifice of which is clithridiate and flush 

 with the front surface of the zocecium. An umbo is present on each 

 cell just below the orifice, and also on the ocecia. 



Localitij. — Cape Adare, 18 fathoms, encrusting Spirorhis antardica. 



Distribution. — Arctic Eegions, Kara Sea, Jan Mayen, East 

 Greenland ; Norway ; Great Britain ; Florida ; Australia ; Falkland 

 Islands ; Cape Adare. 



IDMONEA ORGANIZANS. 



iHC'.t. Tubulipora organizans, d'Orbigny, Voy. Ami'r. Mi'rid., \o\. V., 

 I'ait IV., J., lit, V\. IX., ti-s. 1-:;. 



1S7'.'. Tubulipora organizans, Busk. I'liii. Trans., Vol. CIANIII., p. l'J8, 

 I'l. .\., tigs. -JO-LT.. 



This species is represented by a minute fragment of a colony 

 encrusting seaweed. The zou'cia are arranged here, as in the 

 Kerguelen specimen, in regular alternating series, with about four to 

 eight zoiecia in each row. 



Lucalitij. —Cape Adare, 8 fathoms, on seaweed. 



DistrihiUion. — Kerguelen Island ; Falkland Islands ; Cape Adare. 



