102 Canon A. M. Norman—WNotes on the 
pl. xxvi. fig. 1), and frequently carrying an avicularium at 
its summit. , 
Specimens of C. punctata as here restricted are in my 
collection from Naples; Salcombe, Devon ; Birturbuy Bay, 
Ireland; Wick, 40 fathoms; Shetland, including the largest 
zocecia I have seen of the species, from 120 fathoms ; and 
Nantucket, N.E. America. 
AO. Cribrilina cryptoecium; sp.n. (PI. IX. figs. 1, 2.) 
1867. Escharipora punctata, Smitt, “Kritisk Forteckning, &c.” p. 4, 
pl. xxiv. figs. 4-7. 
1880. Cribrilina punctata, Hincks, Hist. Brit. Marine Polyzoa, p. 190 
(partim), pl. xxiv. fig. 3, and pl. xxvi. fig. 3. 
1894. Cribrilina punctata, Levinsen, Zool. Dan., Mosdyr, p. 61, pl. v. 
firs, 13-18, &e. 
1900. Cribrilina punctata, Waters, “ Bryozoa Franz-Josef Land,” 
Journ. Linn. Soc., Zool. vol. xxviii. p. 62, pl. viii. fig. 22. 
Front wall with lacunes of considerable size, arranged in 
transverse rows, not usually more than four in a row, 
between the marginal lacunes riblets may or may not be 
developed in young zocecia on the lumen-line of the bars ; 
lower lip of oral aperture considerably pouting outwards 
and unusually thick; in the centre at the junction of the 
bars the mucro may be single or double. No central longi- 
tudinal keel. Ocecia in quite young cells with a strong 
frontal arched rib, behind which the ocecium itself lies at a 
lower level. Lateral avicularia with mandible pointing 
upwards and slightly outwards, almost invariably present on 
both sides of the oral opening. 
Such is the character of zocecia just built up at the 
edge of the zoarium. Only a few cells further in it will 
be found that the whole ocecium, except the front arched 
rib, has been hidden and buried under the nodulous growth 
of what Levinsen would call a ‘‘ kenozocwcium,” and which 
scems to be representative here of the avicularium often 
developed in the same situation in C. punctata. 
In old zooaria overgrowth has taken place in a very 
remarkable manner, which, when fully developed, is only 
faintly realized in such a drawing as my fig. 2. The appear- 
ance assumed is extraordinary. The most prominent feature 
is the great massive under lip, above this is the strongly 
developed front rib of the ocecium, above this again another 
transverse rib (sometimes divided across the middle imto 
two), which is the outgrowth of the kenozocecium over the 
ocecium concealed below. Then all the lumen-lines of the 
bars have been raised into ribs of such a size that the 
lacunes are almost entirely hidden between them. 
