CELLEPORA AVICULAIUS. 407 



Cellepora uamulosa, forma aviculakis (part.), Smitt, ffifv. K. Vet-Akacl. 

 Forli. 18G7, Bibang, 32 & 194, pi. xxviii. figs. 202 & 205*. 



Zoarium incriisting, multiform^ often nodulated. Zocecia 

 ovate^ smootlij erect (in the older parts of the colony), 

 crowded, irregular, the apertures showing at different 

 levels on the surface ; orifice orbicular above, with a 

 pointed sinus below ; peristome elevated, thin ; beneath 

 the aperture, and placed a little on one side of the sinus, 

 a rather massive rostrum, bearing a large aviciilarium 

 with pointed mandible, which is turned a little sideways. 

 Ooecia prominent, subglobose, rather broader than high, 

 with large punctures, frequently an ascending process 

 on each side or on one side, a little in front, bearing a 

 small avicularium, with a rounded mandible. Very 

 large spatulate avicularia abundant, irregularly distri- 

 buted. 



Habitat. Incrusting the stems and branches of zoophytes 

 with thick nodulous rolls, on shells &c. from moderate 

 to great depths. 



Localities. South Devon and Cornwall, common, on 

 Sertularians, Gorgonice, &c. ; Oban (T. H.) : Hastings 

 (Miss Jelly) : St. Andrews, occasionally (Dr. Mcintosh) : 

 Shetland, on zoophytes (A. M. N.) : coast of Antrim 

 (Hyndman). 



Geographical Distribution. From Bahusia to Spitz- 

 bergen, pretty common, in moderate and abyssal depths 

 (Smitt): Naples, 10 fms. (Waters): Le Have bank, lat. 43° 

 5&-5 N., long. 64° 51'-3 W., 45 fms. (Smith and Harger). 



I believe that C. avicularis will be found to have a wide 

 distribution ; but hitherto it has been recognized in few 



* C. avicularis resemble.s in many points the C. Eedoufci of Audoaiu, 

 figured in Savigny's ' Egypte '; but, if the figure may be trusted, the two 

 must, I think, be accomited distinct. Apart from other differences, there are 

 an order and regularity about the latter, which are certainly uo characters of 

 tlio present form. With our present knowledge of Audouiu's species, we 

 sliould not be warranted in identifying it with C. avicularis. 



