oZ MARINE POLYZOA. 



37. LEPRALIA LABIOSA, n. s. PL LXXXV. figs. 4, 5. 



Cells pyriform or elongated and narrow at bottom, wide above, 

 surface verrucose ; mouth horizontal, rounded, with a deep sinus 

 in front and an enormously thick, rounded projecting lip. Ovicell 

 small, globose or subpyramidal ; surface granular or verrucose. 



Hab. Falkland Islands, Darwin. Completely incrustinga fucus, 

 but readily detached. 



Cells rounded and apparently unattached behind ; they are of 

 large size and very strongly constricted, of a deep brown colour. 



38. LEPRALIA LABROSA, n. s. PI. XCII. figs. 1, 2, 3. 



Cells ovate, punctured, disposed in linear series, branching from 

 a common centre ; mouth orbicular, with a much-raised, thick- 

 ened and expanded lip, which is usually deficient above. Ovi- 

 cell globose, smooth, recumbent. 



Hab. Off Copeland Islands, Belfast Bay, deep water, W. Thomp- 

 son. On the inside of a dead shell. 



Perhaps a variety of L. ventricosa. 



39. LEPRALIA SIMPLEX. PI. LXXXIV. figs. 1, 2. 



Cells ovate, ventricose, erect superiorly and free; walls smooth, 

 dense ; mouth raised, suborbicular, or slightly sinuated below, 

 with a thickened margin, usually an umbo on the front of the 

 cell. 



Lepralia simplex, Johnst. Hist. Brit. Zooph. ed. 2. p. 305. t. 54. 



fig. 4; Gray, List Brit. Rad. p. 118. 

 Hab. Belfast Bay, 20-35 fathoms, W. Thompson. Off Sana 



Island, G. C. Hyndman. 



40. LEPRALIA AREOLATA, n. s. PL LXXXIII. figs. 3, 4. 



Cells subovate or diamond-shaped, depressed, quite immersed, 

 quincuncial, outlines marked by raised lines ; surface granular ; 

 mouth suborbicular, with a sinus below and a raised and thick- 

 ened margin. 



Hab. Straits of Magellan, 10-20 fathoms, Darwin. On stone. 



41. LEPRALIA ADPRESSA, n. s. PL GIL figs. 3, 4. 



Cells quincuncial, oval, depressed, surface marked with grooves 

 radiating from the lower border of the mouth ; surface smooth ; 

 mouth rounded above, contracted below the middle, and with a 

 straight lip below ; margin slightly raised and thickened. 



Hab. Chiloe, 96 fathoms, on shell, Darwin. 



