OF MADEIRA AND NEIGHBOURING ISLANDS. 291 



Ceibrilina radiata [Moll). B., H., W. 



1803. Eschara radiata, Moll, (•'' Die Seerinde ") Eschara, p. 63, pi. 4. tig-. 17. 

 1826. Flustra Pouilletii, Audouiii, Savigny's Egypte, pi. 9. tig. 12. 



1858. Lepralia radiata, Busk, Quart. Journ. Micr. Sci. vol. vi. p. 263, pi. 20. tigs. 4, 5. 



1859. Lepralia Pouilletii, id. ibid. \ol. vii. p. 66, pi. 22. fig. 6. 



1864. Lepralia scripta, Heuss, " Fauna des deutschen Oberoligocans," Sitz. k. Akad 



Wiss., Math .-natur wis. CI. i. Bd. i. p. 641, pi. 15. tig. 3. 

 1869. Lepralia scripta, Manzoui, " Bryoz. foss. Ital.," Sitz. k. Akad. Wissensch. vol. ix, 



p.4,pl.l. figs. 1,2. 

 1871. Lepralia scripta, Manzoni, ^' Suppl. alia fauua dei Bryozoi Mediterranei," Sitz. k. 



Akad. Wissensch. vol. Ixiii. p. 5, pi. 1. tig. 6. 

 1871. Lepralia scripta, Manzoni, Brioz. Plioc. ant. di Castrocaro, p. 18, pi. 2. figs. 25, 25 a 

 1873. Lepralia scripta, Reuss, Foss. Bryoz. Osterreich-Ungarisch. Miocans, i. p. 165, 



pi. 1. tig. 7, pi. 6. fig. 1. 

 1880. Cribrilina radiata, liincks, Brit. Marine Polyz. p. 185 (partini). Var. temdrostris, 



pi. 25. figs. 3, 6. 



The above references, which might be greatly multiplied, are selected to 

 show the characters of the species as distinguished from C. innominata, Couch. 

 The latter is a common species in the British Seas, which I have found at 

 Guernsey and round the western coasts up to Shetland, and it is most 

 abundant in the West of Ireland. But the true C. radiata, Moll, is rare on 

 our coasts, and I have only seen two specimens from Guernsey and one from 

 Birturbuy Bay, Ireland. The ribs in C. radiata are usually 16-18 and 

 little elevated, so that the lacunes between them are wide open, and commonly 

 more conspicuous to the eye than the ribs themselves ; large, elongated 

 sharply pointed avicularia are scattered among the zooecia. The suboral pore, 

 commonly present in both radiata and innominata, is subject to great variation ; 

 sometimes a boss rises immediately behind the pore and completely conceals 

 it ; sometimes two, three, or more smaller openings take the place of the 

 pore, and occasionally it is entirely absent. C. radiata is common oft 

 Madeira at various depths, on shell, coral, &c. 



Var. FOLIATA, var. nov. 

 I am indebted to Padre Schmitz for portions of a remarkable variety which 

 grows erect from a base attached to a deep-sea Alcyonarian, and consists 

 of foliaceous expansions with zooecia on both faces. 



Cribrilina innominata (Coz^f A). W. 



1847. Lepralia imiuimiata, Johnston, Brit. Zooph. p. 31, pi. 55. fig. 12. 



1871. Lepralia imiominata, Manzoni, "Suppl. fauna Bryoz. Mediterr.," Sitz. k. Akad. 



Wissensch. vol. ixiii. p. 4, pi. 1. fig. ^. 

 1873. Cribrilina innominata, Sniitt, Floridan Bryoz. p. 23, pi. 5. fig. 110 (but not I 



think fig. 109). 

 1880. Cribrilina radiata, Hincks, Brit. Marine Polvz. p. 185 (partim), pi. 25. tigs. 1. 2, 



4, 5, 7. 

 LINN. JOURN.— zoology, VOL. XXX. 23 



