140 SIDNEY F. HARMER. 
20. Surrt, F. A.—“ Krit. forteckning ofver Skandinaviens Hafs-Bryozoer,” 
‘Ofv. K. Vet.-Ak. Forhandl.,’ 1866, p. 395. 
21. Verworn, M.— Beit. z. Kenntnis d. Siisswasserbryozoen,” ‘Zeit. f. 
wiss. Zool.,’ xlvi, 1888, p. 99. 
22. VicELius, W. J.—*‘ Cont. ala Morphologie des Bryozoaires Ectoproctes,” 
‘Tijdschr. d. Ned. Dierk. Ver.’ (2), i, Afl. 3 and 4, 1886. 
23. VicrLtius, W. J.—‘ Zur Morphologie der marinen Bryozoen,” ‘ Zool. 
Anz.,’ x, 1887, p. 237. 
24, Waters, A. W.— Bryozoa from New South Wales, North Australia, 
&c. Part 3,” ‘Ann. Mag. Nat. Hist.,’ ser. 5, vol. xx, 1887, p. 253. 
25. Waters, A. W.—‘*On some Ovicells of Cyclostomatous Bryozoa,” 
‘Journ. Linn. Soc. Zool.,’ vol. xx, 1890, p. 275. 
26. Waters, A. W.—“On the Ovicells of some Lichenopore,” ibid., p. 280. 
DESCRIPTION OF PLATES 7—10, 
Illustrating Mr. Sidney F. Harmer’s paper “ On the Develop- 
ment of Lichenopora verrucaria, Fabr.” 
All the figures refer to Lichenopora verrucaria, Fabr. Slight varia- 
tions in the position of the camera lucida are responsible for the fact that they 
are not absolutely drawn to scale. All the figures on Plate 7, and figs. 12, 
13, on Plate 8, were drawn with Zeiss A. Figs. 11, 14, and 17 were drawn 
with Zeiss C, and the others with Zeiss F. 
PLATE 7. 
Fic. 1.—Two views of a very young left-handed colony (diameter ‘18 mm.). 
1, 2, and 8 are the first three zowcia. 
Fic. 2.—Somewhat older left-handed colony (diameter ‘30 mm.) seen from 
above. 
Fic. 3.—Left-handed colony with four zoccia (1, 2, 3, 4). (Diameter 
‘48 mm.; extreme length, ‘64 mm.) 
Fic. 4.—Right-handed colony with seven complete zoecia. The proximal 
lip of the colony is beginning to grow towards the disc (broken), and the 
commencement of two new zoccia can be seen in the space between the first 
three zoccia (1, 2, and 3). (Diameter °59 mm.) 
Fic. 5.—Colony in which the roof of the ovicell is developing. The colony 
is probably left-handed, with occluded z*. The aperture of the ovicell is not 
