9S POLTZOA. 



B. MOUTH WITHOUT BPINES. 



56. L. pertusa, Busk, I.e., p. 80 ; Johnston, I.e., p. 311. Cells 

 ovato-ventricose, or rhomboid, immersed, separated by a raised line, 

 punctured; mouth orbicular, or narrowed below, and with a small tooth 

 on each side ; margin scarcely thickened, unarmed ; usually with an 

 irregular perforated tubercle below the mouth ; ovicell globose, 

 punctured. Purple. 



Britain. Australia(P). 

 On dead shells and corals. 



57. L. areolata, Susie, I.e., p. 82. Cells sub-ovate or diamond- 

 shaped, depressed, quite immersed, quincuncial, outlines marked by 

 raised lines ; surface granular ; mouth sub-orbicular, with a sinus 

 below and a raised thickened margin. 



Straits of Magellan, 10 to 20 fathoms. 



58. L. mallisii, BusJc, I.e., p. 83 ; L. liforis, Johnston, I.e., p. 314. 

 Cells ovate, frequently truncate at each end ; front, especially round 

 the margin, punctured with numerous stelliform pores ; a central 

 lunate pore ; mouth rounded above, straight below, sometimes armed 

 with three to four oral spines, sometimes forked ; ovicell smooth, 

 sometimes porcellanous, grooved round the upper border, adnate to 

 the front of the cell above. 



Britain. South America. Falkland Islands. 



59. L. hyalina, Busk, l.c.,p. 84 ; Johnston, I.e., p. 301. Cells sub- 

 cylindrical, elongated or compressed and raised in front, sub-erect, the 

 wall thin, transparent, and smooth ; mouth circular, frequently witlj a 

 contracted often sub-tubular sinus below, the upper or posterior margin 

 much raised, sharp ; ovicell globular, erect, free, punctured. 



Britain. California. Greenland. Cape of Good Hope. Falkland 

 Islands, but not New Zealand. 



Var. D., var. nov. A sinus on the lower lip, and one or two low 

 tubercles in the centre of the cell below one another. 



Lyall's Bay. 



60. L. grandis, sp. nov. Cells large ('04 inch), ovate, ventri- 

 cose ; surface shining, sub-granular, often with one or two longitudinal 

 wrinkles, and with distant pores ; mouth simple, slightly thickened, 

 sub-orbicular, with the lower lip flattened; ovicell (?). Pale brown. 



Common on dead shells. 



61. L. Vellicata, sp. nov. Cells immersed, areolate ; mouth higher 

 than broad, rounded at the top and contracted in the middle, the lower 

 lip arched slightly upwards, and raised ; ovicell globose, areolate. 



FAMILY CELLEPOEID^I. 



Polyzoarium composed of cells more or less vertical to its axis or 

 plane, heaped together, or irregularly overlying each other. 



CELLEPORA. 



Polyzoarium calcareous, rigid, adnate, or erect ; composed of 

 urceolate, sub-erect, contiguous cells heaped together irregularly, or 



