22 Mr. E. Kirkpatrick on 



Busk. The remarkable position of the ovicells in the latter 

 species, as elucidated by Mr. Waters (Suppl. Rep. 'Challenger' 

 Polyzoa, p. 22, pi. i. figs. 22, 25), separates Turritigera from 

 Betepora. Retepora pectinata, though branching freely, and 

 with the tubular peristome, is not classed under Turritigera, 

 because its ocecium is in the usual position. 



Idmonea pulcherriina, n. sp. (PI. IV. figs. 6-6 5.) 



Zoarium decumbent, dichotomously branched ; the branches 

 occasionally united by cross bars. Zocecia rather large, in 

 alternate series of two or three, increasing in height from 

 within outward, hyaline, punctured. 



Dorsal surface punctured, marked with longitudinal lines 

 and faint concentric strias, with calcareous radical processes. 



Ocecium forming a flattened punctured inflation, whence 

 arises a curved, tube expanded at the orifice, and with the 

 margins rolled out. 



Uab. Tizard Reef, 6 fath. 



In this species the ocecial orifice has become greatly modified. 

 In the specimen all the orifices are turned in one direction, 

 towards the periphery of the colony. 



Diastopora samiensis, Norman. 



Diastopora sarnieiisis, Norman, Ann. Nat. Hist. (3) xiii. p. 89, pi. xi. 

 figs. 4-6; Hincks, Brit. Mar. Pol. p. 463, pi. lxvi. figs. 7-9. 



Uab. Growing on coralline ; Macclesfield, 36 fath. 



The tubules do not project from the summit of operculate 

 zocecia, as they generally do in British specimens, but are 

 within the zooecial tubes and concentric with them. If these 

 tubes are vasa deferentia, the specimen is monoecious, since 

 ovicells are also present on the zoarium. 



Lichenopora capillata, n. sp. (PL IV. figs. 4, 4 a.) 



Zoarium composed of confluent disks (meandrine), concave 

 in the centre, with a somewhat thick laminar margin. 



Zocecia in uniserial radiating series, with two or three rows 

 of cancelli between. Zooecial orifices oval, much produced on 

 the central side, with from 6-12 fine setose processes on the 

 margin ; numerous calcareous bristles growing from the body- 

 wall. Cancelli rounded, about half the diameter of the zooecia. 



Ocecia scattered, each forming a conical swelling, produced 

 into a wide tubular orifice. 



Uab. Garvan Beef, 6 fath. 



