812 Mil. J. iiiTCiiii!; ox iiYDRoiDS [May 24, 



Harljour, shoi'C to 20 fathoms, rock and sand. 8t. 23, Five 

 Islands, 8 to 12 fathoms, I'ock and sand, and mud ; two colonies. 

 St. 25, between Warden Island, Howe Island, and Lyall Island, 

 15 to 20 fathoms, rock and sand ; many colonies. 



This species has ah-eady l)een recorded from the China Se.a 

 (Jiiderhohn, 189G, p, 9), and from Bird Island, Algoa Jiay, Cape 

 Colony (Wan-en, 1908, p. 344, as T. (rqualis). 



TuYROSCYPUUS viTiEXSis Marktanner-Turneretsclier, 1890, 



A widely distributed species, occuiring at eight of the fourteen 

 stations from which Hydroids were obtained. In this, as in 

 2\ regidaris, thehydranth is attached toai-ow of minute chitiuous 

 prominences on the inside of the lower portion of the hydrotheca. 

 These are arranged as in the previous species, but they are more 

 strongly developed, and ai'e placed on a slightly raised portion 

 of the hydrothecal wall. 



Localities. St, 1, east of Tavoy Island and Port Owen, 4 to 12 

 fathoms, sand and l)roken shells, and mud ; common, St. 3, 

 French Bay, King Island, and south end of Iron Island, 3 to 8 

 fathoms, mud and rock, or saiul ; common. St. 9, between 

 Beiitinck Island and Courts Island, 12 to 26 fathoms, sand and 

 shells ; rare. St. 14, l^ushby Island pearling-ground, slioi-e to 

 21 fathoms, sand and mud; rare. Stt, 15 and 1*6, Ilavenshaw 

 Island, Sir John Malcolm Island, and Alligator Rock, 5 to 18 

 fathoms, rock and sand, or rock and mud ; vai-e. St. 1 9, Pa3-e 

 Island and Pink Island, 7 to 9 fathoms, rock and sand ; rare. 

 St. 25, Gregory Group and Crichton Island, 4 to 14 fathoms, 

 stones and broken shells, and rock ; fairly common. St. 35, 

 between AVai-den Island, Howe Island, and Lyall Island, 15 to 

 20 fathoms, rock and sand ; rare. 



Family C A M p a n u l i N i d ^. 



Opercularella lacerta Johnston, 1847. 



Identification depends iipon troi)hosome characters alone, the 

 gonosome being absent. I can detect nothing, however, which 

 <'ould distinguish these specimens from North Sea examples of 

 the above species. It occurs in its simplest form, a creeping 

 stolon, sending up here and there short ringed stalks, on e^ach of 

 which is poised an exceedingly hyaline liydrotheca. 

 Dimensions : — 



Hydrotheca, depth * 0'21 nnn. 



„ diameter 0-08-0-09 nnn. 



Peduncle, diameter 0*04 mm. 



Loaditjj. Moskos Islands, 3 to 2(5 fathoms, rock and sand, or 

 rock and mud ; raie, growing on a stem of Flnmnlaria setaci'a. 



Although the range of the s]>ecies is a wide one, for it has 

 been recorded from the North of Europe, from both si<les of the 



* I'miii to]) <if ii|i('ri'tilaiii. 



