CORNUCOPINA 407 



station off Brazil. Busk's type specimen differs from Kluge's description in the presence 

 of a small basal spine near the point of origin of the daughter-zooecium ; in the frequent 

 presence of a basal avicularium similar in shape to the frontal one, and placed about 

 half way between the two single basal spines ; and in the absence of a cryptocyst. It 

 has large, fluted hyperstomial ovicells borne on zooecia which are rather larger than the 

 non-fertile zooecia. 



The specimen from Challenger St. 332, recorded by Busk as C. navicularis, agrees 

 with C. rotundata (Kluge), and differs from the type of C. navicularis in its spine-bearing 

 process which is longer with the spines less evenly distributed ; in its opesia which is 

 more oval in shape and does not extend towards the daughter-zooecium; and in the 

 shape of the basal avicularium. There are no frontal avicularia and no ovicells. 



Fig. 32. A, B. Cornucopina moluccensis (Busk). St. TN 90, New Zealand. C. C. pectogemma (Goldstein). 

 87.12.9.157. Challenger St. 145, near Prince Edward Island. Base of avicularium, showing bulb and 

 transverse septum. 



av. avicularium, e. eminence to which avicularium is attached. 



11. Cornucopina rotundata (Kluge). 



Bicellaria rotundata Kluge, 1914, p. 640, pi. xxxiii, fig. 2. 

 Cornucopina rotundata Harmer, 1926, p. 422. 



Bicellaria navicularis (part) Busk, 1884, p. 32. [Specimen from St. 332.] 

 Station distribution. Not represented in the Discovery collections. 



Geographical distribution. 35 39' S, 5o°47'W. South Atlantic Ocean, 4026 m. (Busk); 

 Southern Ocean, 3397 m. and 3423 m. (Kluge) 



14-2 



