POLYZOA. 121 



oral mucro below the orifice. The tip of this, the bases of the spines and the 

 peristome are of a purple tint. Sometimes an avicularium on a raised process at 

 one side of the zocecium, varying in size, spatulate and large or small and pointed. 

 Ocecia small, narrow, open in front, two of the spines showing in front. 

 Locality : Gulf of Manaar. 



Lepralia nitida, n. sp. Plate, fig. 10. 



Zoarium closely adhering, with a shining surface, pale yellow in colour. Zooecia flat 

 but rising to a prominent umbo situated below the orifice, granular, the granules 

 radiating from the umbo to the margin of the zocecium which is punctured there. 

 Orifice arched above, narrowing, then widening, and with a convex lower lip. A 

 small round avicularium on either side on a level with the lower margin of the orifice. 

 Ocecia small, rising to a prominent umbo, orifice of the fertile zocecium much larger 

 than the usual orifice. 



Locality : Gulf of Manaar. 



This is a small neat species with little variation of form. The ocecia are merely 

 like a triangular extension of the zooeciurn above the orifice. 



"to' 



Lepralia adpressa, Busk (2). 



The surface of the zooeciurn in the present specimen is granular, punctured round 

 the margins only ; the upper portion of the zocecium is considerably raised ; the lateral 

 lumps carry small round avicularia ; when in old specimens these are absent the 

 lateral processes are seen to be hollow tubes. Sometimes two or three of these 

 processes are present above the orifice and one below in addition. 



Locality : Off Galle, deep water. 



Lepralia feegeensis, Busk (2). 



The ocecium of this species has not been described before. There is one well 

 preserved ocecium on the Ceylon specimen. It is large and irregular in shape, the 

 front wall is marked with large circular pitted areas, punctured in their centres, 

 giving the ocecia a much coarser appearance than the zooecia, the reverse of what 

 is seen in Lepralia gigas, Hincks (10). The orifices of fertile zooecia are broader at 

 their bases than those of others. Avicularia of the usual type, and in the usual 

 position for L. feegeensis, are often present in pairs, but usually singly, or there may 

 be none. 



Locality : Gulf of Manaar. 



Lepralia cleidostoma, Smitt (26). 



There is one small colony of this species. It has no ooecia to show the characteristic 

 striae as a help to identification, and the avicularia are always directed upwards, not 

 outwards. On one of the zooecia, on the outside of the colony, jointed spines are to be 

 seen, as in Smitt's (26), plate xi., fig. 217. A larger, loosely incrusting colony from 



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