REPORT ON THE PENNATULIDA. 



15 



The axis is rouud, and tolerably strong. 



Calcareous corpuscles in tlie end of the stalk oblong, of the same form and size as in 

 AnthoiMum thomsoni. 



The measurements of the only specimen are — 



Length of the whole polypidom 

 Length of the whole stalk, 

 Length of the lower polyps, 

 Length of the tentacles, 

 Breadth of the stalk, . 

 Breadth of the rachis, . 



510 mm. 



76 

 fi-10 

 3-4 

 3-4 

 4-5-5 



Habitat. — Station 50, North Atlantic, south of Halifax, lat. 48° 8' N., long. 63° 

 39' W. One specimen. Depth, 1250 fathoms. Bottom temperature, 2°'8 C. Grey ooze. 

 May 21, 1873. 



3. Anthojotilum simplex, n. sp. (PI. IV. fig. 22). 



Polypidom colourless. Polyps sessile, widely separated, very large with a broad base, 

 two in each row. Eachis free on both sides in the middle line. Zooids numerous, 

 more elevated than in the other two species, and somewhat conical. 



Stalk with an enlargement in the upper part. 



Polyps long and large, resembling in size those of A. thomsoni, and measuring 

 without the tentacles 12 to 15 mm. in length. The tentacles, of which there exist only 

 traces on some polyps, seem to have been very long. A remarkable feature is the large 

 area of elliptical form upon which each polyp stands, and which may be regarded as a 

 broad base to the polyp. 



The zooids are to be found in the same position as in the other species, and differ only 

 by their greater elevation on the surface of the rachis and their smaller size, as they 

 measure only 0'28 to 0'30 mm. in diameter. The ventral zooids form a single or double 

 series, and the dorsal a double or triple series. 



Calcareous corpuscles as in the other species. 



Measurement as follows : — 



Length of the whole polypidom, 

 Length of the stalk, 

 Breadth of the stalk, 

 Breadth of the rachis, 



400 mm. 

 55 

 7 

 4-5 



Habitat. — One single specimen in a bad state of preservation, from Station 133, South 

 Atlantic, west of Tristan d'Acunha, lat. 35° 41' S., long. 20° 55' W. Depth, 1500 fathoms. 

 Bottom temperature, 1°'3 C. Globigerina ooze. October 11, 1873. 



