EEPOET ON THE PENNATULIDA. 



9 



The stalk is very rich in flat elliptical calcareous corpuscles resembliug those of 

 Veretillum, the maximum size of which is O'l mm., while the greater majority are not 

 more than 27 to 54 ju, long, and many measure only 5 to lO'/x. 



Length of the stalk, 

 Length of the feather, . 

 Length of the longest pinnule, 

 Breadth of the longest pinnule at base. 

 Breadth of the longest pinnule at rachis, 

 Breadth of the longest pinnule at stalk. 



29 mm. 



58 



20 



4-5 

 lO'O 



5-0 



Hahitat.— Station 203, Zebu, Philippines, lat. 11° 7' N., long. 123° 7' E. Depth, 10 

 to 20 fathoms. Mud. October 31, 1874. One single specimen. 



Halisceptrum, Herklots. 



Halisceptrum gustavianum, Herkl., var. parvifolia, mihi. 



Of this form the Challenger collection contains four fragments, from Station 212, 

 off Mindanao, one of the Philippines. Lat. 6° 55' K, long. 122° 15' E. Depth, 10, 

 14, and 20 fathoms. Sand. January 30, 1875. 



Sub-section II. VIEGULAEIE^. 



Family 1. Viegulaeid^. 



Virgularia, Lam. 



1. Virgularia hromleyi, n. sp. (PL IIL fig. 10). 



Of this species the Challenger got only one small fragment. 



Polyps nearly sessile, so that there is only a very faint appearance of pinnules, and 

 they must at all events be called very small. Pinnules nearly opposite, each group about 

 4 mm. distant from its neighbours. Polyps with their cells 2*5 to 2"8 mm. long, three in 

 each pinnule, with pretty well-marked cells, the margin of which has no spines nor pro- 

 tuberances of any kind. 



Rachis small, of 0"37 to 0'42 mm., with lateral zooids disposed at the base of the leaves 

 ia one single row of three individuals. 



Axis round, 0'38 mm. in breadth, with well-developed radial fibres. 



Calcareous corpuscles of the ordinary form of needles, 0*085 mm. maximum length, 

 are scantily found in the stalk, the rachis, and the tentacles of the polyps. 



Habitat.— B:tatioB. 235, South of Japan, lat. 34° 7' W., long. 138° 0' E. Depth, 565 

 fathoms. Bottom temperature, 3°'3 C. Mud. June 4, 1875. 



(ZOOL. CHALL. EXP. — PART II. — 1880.) 



B2 



