2. CRISIA. 5 



Ch'isiii luxata, Flemlnfi, BlainviUe; Juhnst. B. Z. 1st ed. p. 262 ; Couch. 

 Crisia denticulata, M.-Echo. I. c. p. 201, pi. vii. fig. 1 ; Johnst. 2Ed 



ed. p. 284, pi. 50. figs. 5, C; Gray; Sars; D'Orb.; Gosse ; Alder; 



Busk ; Hmcks ; Norman ; Smitt, I. c. p. 117 (nee Floridan Bryozoa). 

 Cellaria arctica, Sa7-s, Nyt May. 1863, p. 31 (teste Smitt). 



Hah. Coasts of Britain and Ireland, very generally distributed ; 

 Norway ; ? Spitzbergen ; ? Grand Manan (Stimps.). 



3. Crisia elongata, M.-Edw. (Plate IV. figs. 5, 6.) 



Zoocecia 12-21 iu each internode, often much produced and 

 curved forwards ; aperture orbicular ; branches arising from fifth to 

 ninth zoooecium in each internode ; oooecium ? 



Cellaria elongata, M.-Edw. I. c. p. 10, pi. 7. fig. 2 ; D'Orb. I. c. p. 599. 



Hah. Red Sea ? (M.- Edwards) ; Algoa Bay. 



4. Crisia edwardsiana, D'Orb. (Plate II. figs. 5-8.) 



Zoocecia 2-3 in each internode, curved forwards ; dorsal surface 

 of internode convex, and usually ridged transversely ; branches 

 arising from the first or lowest cell in the internode ; one or other 

 of the zoocecia in each internode usually armed with a long jointed 

 Bpine ; oooecium lateral, pyriform. 



? Bicrisia Edwardsiana (sic), D'Orb. I. a. p. 601 (1852). 

 Crisidia Edwardsiana (1839), Voy. dans VAmer. Mer. Polypiers, p. 7, 

 pi. 1. figs. 4-8 ; M'Gilliv. Aust. Po/yzoa, p. 



Hah. Coasts of Patagonia {D'Orhigny) ; Terra del Fuego {Dar- 

 win !) ; New Zealand {Dr. Sinclair !) ; Australia (!/' GilUvray). 



M. d'Orbigny's figure represents the zoocecia as much longer and 

 slenderer than they are in any specimen that has come under my 

 notice ; but there can be so little doubt that his is the same species 

 as that here described that I have retained his name. 



5. Crisia fistulosa, Heller. (Plate VI. a. figs. 1, 2.) 



Zoocecia 6-15 in each internode, closely adnate for the greater 

 part of their length ; terminal portion produced, quite cylindrical, 

 slightly contracted towards the end and turned abruptly forwards ; 

 branches given ofi" from the third to sixth zoooecium, in the latter 

 case that being the highest in the internode ; oooecium subglobose, 

 even, formed by one of the uppermost cells. (.Joints white or light 

 brown.) 



Crisidia fistulosa, Heller, Die Bryoz. d. adriatischen Meeres, p. 118, 

 pi. iii. fig. 5 (not good). 



Hah. Adriatic Sea, at Lesina ; Lissa ; Lagorta {Heller, Fritsch). 



6. Crisia eburneo-denticulata, Smitt. (Plate VI.) 

 CeUs 9-17 in each internode, co— -+■- throughout, contracted at 



