NORTH SIDE OF THE BAY OF BISCAY, AUGUST, 1906. 29 



base of the hydrotheca there is a transverse ring, which indicates the 

 presence of a diaphragm similar to the one mentioned in Lafoea 

 innnata. The hydrothecpe have not the shape or position of those 

 figured by AUman, but are similar to those figured by Bedot. Many 

 of the hydrothecffi show circular rings of growth near their orifice. 



The shapes of the sarcotheca? are similar to those figured by Bedot, 

 but they are not like the long sarcothecte on the auxiliary tubes of 

 Allman's species. So far as I know, no one has yet examined a living 

 FerisijjJionia, so that the structure and form of the supposed sarco- 

 styles are unknown. 



Bedot fortunately found a specimen bearing a gonosome, which was 

 previously unknown. It belongs to the Copjnnia type, and a beautiful 

 figure is given of it. 



Cryptolaria humilis, Allman. 



Cryptolaria Immilis, Allman, 1888, p. 39, PI. XVIII. fig. 1. 



The collection contains only a fragment from the upper part of a 

 colony. It was taken at Station XIII., 412 fathoms. The hydrothecse 

 are similar to those of Cryptolaria humilis as figured by Allman, 

 and they are also like the hydrothecoe of C. conferta, Allman, and 

 C. crassicaulis, Allman. It would be well to have these three species 

 united, and a few more with them. 



Distribution. C. humilis: off the Azores, 38° 30' K, 31° 14' W., 

 1000 fathoms (Allman, 1888). C. conferta: off Cuba, 450 fathoms 

 (Allman, 1877) ; off the Azores, 70-250 fathoms (Pictet et Bedot) ; 

 Gulf of Gascogne, 225 fathoms ; off West Coast of Morocco and 

 Soudan, Cape Spartel to Cape Garnet, 225-400 fathoms (Billard). 

 G. crassicornis : off Ascension Island, 420 fathoms (Allman, 1888). 



Cuspidella grandis, Hincks. 

 This species occurred at Station I., 75 fathoms, on Sertularella 

 polyzonias. At Station IV., 109 fathoms, it was fairly common on 

 Sertularella and Diphasia alata. 



Cuspidella costata, Hincks. 

 This species was only taken at Station I., 75 fathoms, and was 

 rather scarce. 



HALEOID-S. 

 Halecium sessile, Norman. 



A single specimen was taken at Station XIIL, 412 fathoms. It is 

 about 2h inches in height, and has evidently lost some of its branches. 

 The main stem is thick and fascicled ; the principal branches are also 

 fascicled and irregular in position. 



