REPORT ON TPIE POLYZOA. 
5 
Yar. a. gracilis (PL I. fig. 4). 
Character. — Closely resembles Crisia denticulata but of far slenderer habit, rarely 
if ever presenting any longitudinal interspaces between the series of zooecia ; branches 
not more than 0'2 mm. wide ; zooecia about (P06 in diameter. 
Hahitcit. — Off Zebu, Philippine Islands. 
Yar. /3. patagonica, d’Orbigny (?) 
Crisia patagonica, d’Orb., Voy. Amer. Merid., Polyp., p. 7, pi. i. figs. 1-3. 
“ Cells from nine to nineteen, straight, very distinct ; branches arising from second 
or third cell ; sometimes two from an internode, when the second arises from the sixth 
cell. Joints black.” Diameter of branches about 0‘23 mm., and of zooecia 0'08 mm. 
Habitat. — Station 36, off Bermudas, 30 fathoms, coral. 
[Patagonia,] 
(4) Crisia elongata, M.-Edw. (PI. I. fig. 3). 
Crisia elongata (?), M. -Edwards, Rech. sur les Crisies, p. 10, pi. vii. fig. 2 ; Busk, Brit. Mus. Cat., 
pt. iii. p. 3, pi. iv. figs. 5-6; Waters. 
Character. — Zoarium composed of long straight branches. Zooecia, twelve to 
twenty-one or more in each internode ; often much produced and curved forwards. 
Aperture circular, even ; branches arising from the fifth to the seventh zooecium. 
Ooecial cells unknown. Surface finely granular. Branches 0'3 mm., zooecia 0'07 mm. 
wide. 
Habitat. — Station 176, lat. 18° 30' S., long. 173° 52' E., 1450 fathoms, Globi- 
gerina ooze. 
[Red Sea or Mediterranean? M.-Edw.; Algoa Bay.] 
Whether the specimen (the only one in the Challenger collection) here described and 
figured really be the form described by M. Milne-Edwards I am by no means now con- 
vinced, but it is the same as that to which I have given the same appellation in the 
British Museum Catalogue. One reason for the doubt is that M. Milne-Edwards 
describes his Crisia elongata as narrower than Crisia denticulata, while that I have to 
name is certainly quite as wide, if not wider, than the usual form of Crisia denticulata. 
(5) Crisia acuminata, n. sp. (PI. III. fig. 1). 
Character. — Zoarium 1 to 2 inches high, composed of long, straggling, flexuose 
branches dividing once or twice dichotomously and terminating in two short bifurcations. 
One of the terminal zooecia (usually the penultimate), is often produced into a long, 
