244 On a New Rhabdosphere. 
and extreme tenuity of the spines probably amply account for its not having 
been recognised in the deep-sea deposits. 
The formal description is as follows :— 
Lthabdosphera Blackmaniana, n. sp. Very minute, 10y, ze, about one 
quarter the size of £&. claviger, with tapering acute short spinous processes, 

Rhabdosphera Blackmaniana, n. sp. 
Lat. obs. 28° 25’ S., long. 23° 56’ W. On the outward voyage to the Cape 
of the “ Discovery.” 
I add no greater details, since the subject of Rhabdospheres has been dealt 
with so fully by Mr. Blackman and myself.* 
* Loc. cit. 
