298 CANON A. M. NORMAN ON THE POLYZOA 



to the lip. Oral opening with a straight lip, above with six spines. Ooecium 

 subgiobose, its surface granulated. Audouin's F. umhracula is evidently 

 simply F. coronata with ocBcia. In my specimens the ooecia do not so much 

 cover the zooecium which they overlap; but Audouin's fig. 7 shows that the 

 cluster had only a small space on which to extend itself. 

 Two specimens dredged at Madeira. 



MiCROPOEELLA NUTRIX {J. JtllUen). (PI. 39. fig. 1.) 



1888. Inversula nutrix, J. Jullien, Miss. Sci. Cap Horn, Bryozoaires, p. 44, pi. 4. 

 fig. 8. 



Zooecia of large size, as will be seen by comparison with the other figures 

 on the plate which are drawn under the same power; the surface is coarse 

 and roughly pitted, with pores at the bottom of the pits. The frontal pore is 

 situated well forwards, and is sometimes connected with the oral opening. 

 Small lateral openings are usually present on each side, almost on a level 

 with the lower lip, and probably represent the base of vibracula. There are 

 eight mouth-spines. The ooecium is not large, nor so high and globose as is 

 usual in the genus. 



A single specimen was dredged in deep water encrusting a shell of 

 Vitrupa. 



MiCROPOEELLA VEEEUCOSA (PeacJl). 

 1880. Diporula verrucosa, Hincks, Brit. Marine Poljz. p. 220, pi. 30. figs. 1, 2. 



I cannot see any grounds for regarding this as generically distinct from 

 Microporella. 



single small specimen dredged in about 40 fathoms. 



Tessaeodoma boreale {Busk). (PI. 38. fig. 10.) 



1851. Pustulipora gracilis, M. Sars, " Beretning Somm. 1849, Zool. Reise i Lofoten og 

 Finmarken," Nyt Mag. for Naturvid. p. 26 (separate copy). 



1860. Oncliopora borealis, Busk, "Shetland Polyzoa," Quart. Jour. Micr. Sci. vol. viii. 

 p. 214, pi. 29. figs. 1, 2. 



1863. Quadricellaria gracilis, M. Sars, "Beskv. over nogle norske Polyz.," Videnskabs. 

 Forliand. p. 15 (separate copy), 



L864. Quadricellaria gracilis, Alder, Jour. Micr. Soc. vol. iv. p. 7, pi. 2. 



1868. Anarthropora borealis, Smitt, (Efvers. K. Vet.-Akad. Forhand., Biliang, p. 8, 



pi. 24. figs. 25-29. 



1869. Tessarodoma gracile, Norman, " Last Report Dredging Shetland," Report Brit. 



Assoc, for 1868, p. 309. 

 1873. Tessarodoma boreale, Smitt, Floridan Bryoz. pt. ii. p. 32, pi. 6. figs. 143-145. 

 1880. Porina borealis, Hiucks, Brit. Marine Polyz. p. 229, pi. 31. figs. 4-8. 



A single small specimen taken in 200-300 fathoms. 



