REPORT ON THE POLYZOA. 7 



not unfrequently from the second cell. Ooecial cell infundibulifonn, rounded at the top. 

 Branches 0'2 mm., and zooecia 0'08 mm. wide. 



Habitat. — Off Marion Island, 50 to 75 fathoms ; oflF Prince Edward Island, 80 to 

 150 fathoms. 



[Ceylon, Holdsworth.] 



Habit very delicate and slender. May be allied to Crisia tenuis, MacgUliv. [loc. cit., 

 p. 39, pi. xxxix. fig. 5), in which, however, the zooecia appear to be less closely connate. 

 In the specimens brought by Mr. Holdsworth from Ceylon there were no ooecia ; on 

 which account I have given a figure of that organ from the Challenger collection. 



(8) Crisia conferta, Busk (PI. II. fig. 5). 



Crisia conferta, Bk., Brit. Mus. Cat., pt. iiL p. 7, pL vi.A fig. 5. 



Character. — Zoarium tufted, composed of short, thick, curved branches radiating as 

 it were from a short central stem. Zooecia thirteen to twenty-one in an internode ; nearly 

 the upper half free, cylindrical, curved abruptly forwards ; orifice orbicular or subeUiptical, 

 of the same diameter as the tube ; branches one to four from each internode, not opposite. 

 Ooecial cells closely adnate, median or axilliary ; usually broadly truncate. Branches 

 0"35 mm., and zooecia 0"07,mm. wide. 



Habitat. — Off" St. Vincent, Cape de Verde Islands, depth 10 fathoms. Station 163a, 

 off" Twofold Bay, 150 fathoms. 



[Cape de Verde Islands, H.M.S." Herald."] 



A well-marked species, growing usually in dense tufts, and peculiar for the number of 

 branches springing from an internode. The curved free portion of the cell is not, as is 

 most usually the ease, a mere production of the peristome marked with annular lines of 

 growth, since the wall of that part is punctured like the rest of the zooecium. 



(9) Crisia cylindrica, n. sp. (PI. II. figs. 2, 4). 



CJiaracter. — Zoarium about -^ an inch high, furcately branched ; ten to thirty 

 zooecia in an internode ; usually two branches given off from the longer segments, the 

 lower from about the seventh zooecium, and the upper near the summit of the internode. 

 Zooecia about half immersed, the upper part curved forwards, exceedingly delicate and 

 thin-walled, without puncta ; orifice circular, margin even. Branches perfect!^ cylindrical, 

 with an even shiny surface, distinctly punctate ; dorsal as]iect obliquely striated, but 

 quite even. Ooecial cells pyriform, usually axillary, with a wide tubular orifice. Dio meter 

 of branches about 0"15 mm., and of zooecia 0"06 to 008 mm. 



