36 THE VOYAGE OF H.M.S. CHALLENGER. 



depressed, with usually a small raised avicularium at each side, and sometimes another one 

 above the aperture. There are numerous vicarious spatulate avicularia, and the numerous 

 globose ovicells are punctured ; in the young cells they are much raised, but in the older 

 ones immersed. i\Ir. Busk thinks that this may be the Cellepora avicularis of Smitt, 

 but the shape of the oral aperture is quite different, as may be seen in Smitt's 

 Floridan Bryozoa, pi. ix. fig. 197, and in my Bryozoa of Naples, pi. xiv. fig. 8. 

 Habitat.— Simon's Bay, Cape of Good Hope. 



Cellepova armata, Hiucks, var. erecta, nov. (PL III. figs. 4, 41-43). 



The zooecial characters are the same as in the European forms, which, however, are 

 adnate, whereas the Challenger one is cylindrical. There is a distinct sinus in the 

 aperture, and by the side are situated long tubular processes, with a triangular avicu- 

 larium at the end. 



Cellepora hastigeni has similar long rostral avicularia, but the shape of the aperture 

 \ is of a different type. 



/ Habitat.— 'SiviX.iow 308, 175 fathoms. 



In Cellepora honohdensis, Busk,^ and Cellepora mamillata, var. atlantica. Busk," the 

 ovicell is only an open hood. Cellepora bilabiata, Busk," has radiating pores round the 

 border of the area of the ovicell. 



Pahnicellaria sl-enei, Ellis and Solander. 



Milhpora sl-enei, Ellis and Solander, Zoophytes, p. 135. 



PahniceUaria skenel, Hincks, Brit. Mar. Poly., p. 379, pi. lii. figs. 1-4, which see for synonyms, 



and add Cellepora tridens, Kirchenpauer, Untersuchungs-Fahrt. der Pom- 



merania, p. 188, figs, a and h. 



The specimen from Station 49 may be considered as the var. tridens of Kirchenpauer. 

 The name was used independently by Mr. Busk. There are three avicularia rising 

 above the aperture, and sometimes a fourth. The mandibles are similar to the typical 

 Pahnicellaria skenei, but are much smaller. 



Habitat. — Station 49, 85 fathoms. 



Cupularia canariensis, Busk (PI. III. fig. 2). 



Cupidaria canariemi:', Busk, Quart. Journ. !Micr. Soc, vol. y\\. p. 66, pi. xxiiL figs. 6-9. 

 For synonyms see AVaters, Bryozoa from New South Wales, Ann. and Mag. Nat. Hist., ser. n, 

 vol. sx. p. 201. 



An unnamed specimen from off Bahia, 10 to 80 fathoms, has the zoarium orbicular, 



1 Zool. Cliall. Exp., pMt XXX. p. 195. - he. cit., p. 199. ^ /j^, ^n., p. 203. 



