ON THE DEVELOPMENT OF TUBULIPORA. 153 



38. Seeliger, 0. — " Bemerk. zur Knospenentwicklung der Bryozoen," 



'Zeits. f. wiss. Zool.,' 1, 1890, p. 560. 



39. Smitt, F. a. — " Om Hafs-Bryozoernas utveckl. ocli fettkroppar," ' Ofv. 



Vet.-Akad. Forli.,' 1865, No. 1. 



40. Smitt, F. A. — "Kritisk forteckning ofver Skandiuaviens Hafs-Bryozoer," 



II, 'Ofv. Vet.-Akad. Forh.,' 1866, p. 395. 



41. Walford, E. a. — " On some Bryozoa from the Inferior Oolite of 



Siiiptou Gorge," II, ' Quart. Journ. Geol. Soc.,' 1, 1894, p. 72. 



42. Walpord, E. a. — "On Cheilostomatous Bryozoa from tiie Middle Lias," 



'Quart. Journ. Geol. Soc.,' 1, 1894, p. 79. 



43. Waters, A. W. — " On Tertiary Cyclostomatous Bryozoa from JMew 



Zealand," 'Quart. Journ. Geol. Soc.,' xliii, 1887, p. 337- 



44. Waters, A. W. — "Bryozoa from New South Wales," III, 'Ann. Mag. 



Nat. Hist.' (5), xx, 1887, p. 253. 



45. Waters, A. W. — " On some Ovicells of Cyclostomatous Bryozoa," 



'Journ. Linn. Soc.,' 'Zool.,' xx, 1890, p. 275. 



EXPLANATION OF PLATES 8—10, 



Illustrating Mr. Sidney F. Harmer's paper " On the Develop- 

 ment of Tubulipora, and on some British and Northern 

 Species of this Genus." 



PLATE 8. 



The figures on this plate were all drawn to the same scale (camera lucida, 

 Zeiss A obj., with front lens removed; afterwards x |). The pores of the 

 zocecia are in most cases not indicated. 



Fig. 1. — Tubuiipora plumosa, W. Thomps. (p. 105). Fertile lobe, 

 with one ovicell and the beginning of a second ovicell ; from a bilobed colony 

 (proximal ends of oldest zooecia, at the bottom of the figure, obscured by 

 foreign substances). Salcombe estuary, 4 — 5 fathoms, March — April, on 

 E-hodymenia ciliata. 



Fig. 2. — T. aperta, n. sp. (p. 101). A small colony with a single ovicell, 

 which is abnormal in possessing four accessory oceciostomes, numbered 1, 2, 

 3, 5. 4 is a similar structure, but its terminal membrane is completely 



