ART. 13 BEYOZOAN FAUNA CANU AND BASSLER 55 



1905. Tuhulipora liliacea Nordgaard, Hydrographical and biological investiga- 

 tions in Norwegian fiords, Bryozoa, Bergen Museum, p. 173 (Sag Fiord, 

 200 meters, on branches of IsidcUa hippuris; Malangen, 100-200 meters). 



1912. TubuHpora liliacea Nordgaard, Revision av universitets samling av norske 

 Bryozoer. Kgl norske Videnskabers Selskabs Skriften, no. 3, p. 14, 

 (Riser; Glesvaer ; Manger; Flors; Bognostrommen ; Beran ; Skarnsund, 

 Bodo, Hammerfest). 



1912. TuhuUpom lUiacea Osbukn, Bryozoa of Woods Hole region, Bulletin 

 Bureau of Fisheries, vol. 30, p. 217, pi. 20, fig. 10 (Vineyard Sound, 

 Sow and Pigs Reef; Buzzards Bay near Robinson Hole; Woods Hole, 

 shallow water, 4-24 meters, on algae, hydroids, Bugula, sliells). 



1918. TubuUpora liliacea. Nordgaard, Bryozoa from the arctic regions, Tromso 

 Museums Aarshefter, vol. 40, p. 17 (between Lodingen and KjoUefjord 

 in Finmark, 30-200 meters on hydroids). 



Measurements. — Diameter of orifice, 0.l!2-0.14 mm., diameter of 

 peristome, 0.1()-0.20 mm.; internal distance (between the fascicles), 

 0.20-0,30 mm.; diameter of protoecium, 0.10-0.16 mm.; diameter of 

 oeciostome, 0.16 mm; number of tubes, 5 to 8. 



Sti^uctwe and variations. — We have been able to examine a cer- 

 tain nmnber of specimens of diverse origin, corresponding rigor- 

 ously to the figures of Harmer, 1898, and have given photographs 

 in order to prove the homogeneity of their characters. The latter are 

 essentially (1) violet color of the colonies, (2) the slight separa- 

 tion of the fascicles, (3) the continuity of the fascicles, never inter- 

 rupted, (4) the great thickness of the peristomes, and (5) the 

 presence of an oeciostome of the same diameter as the tubes but 

 arranged obliquely". 



A specimen dredged from Kokall Bank, Scotland, shows a linear 

 basal portion on which the separation of the fascicles is somewhat 

 greater (0.40 mm.) The other specimens were flabellate and 

 bifurcated. 



Another specimen from the Atlantic dredged at LeCroissic, 

 France, is composed of four rectilinear branches arranged in a cross. 

 Its protoecium is very small, little apparent, with a diameter of 

 0.10 mm. 



The specimen dredged in the English Channel at Etretat, France, 

 is claviform. Its protoecium is a little swollen and measures 0.16 

 mm. in diameter. 



All these characters are visible on the excellent figure of Osburn, 

 1910 (pi. 20, fig. 10), representing a specimen from Vineyard Sound, 

 Mass. The only difference is the isolation of a certain number of 

 tubes on the distal portion of the colony. But in the eastern Atlantic 

 we have not observed specimens so young. Moreover the author did 

 not indicate the enlargement of his figure. The oeciostome figured 

 is that of TubuUpora liliacea and not T. tubulifera Lamouroux, 

 1821. The Galapagos specimens are not exactly identical, as the 



