BRYOZOA FROM ZxiNZIBAR. '493 



p. 18, pi. i. figs. 8, 9 (1896), which see for synonyms, and add: 

 Calvet, "Bry. Mar. de Cette," Trav, de I'Jnst. de Zool. de I'Univ. 

 de Montpellier, ser. 2, mem. 11, p. 13, pl. i. figs. 1, 2 (1902); 

 "Bry. Mar. des Cotes de Corse," op. cit. mem. 12, p. 6 (1902) ; 

 Levinsen, Morph. & Syst. Studies on the Cheil. Bry. p. 197, 

 pl. viii. figs. 6a-6 2/(1909). 



From the front wall to the zocecial wall, through what has been 

 called a second chamber, but is the equivalent of a compensation 

 sac, there is a bundle of three, four, or more muscles (see fig. 15). 

 The attachment of these on the front has been mistaken for a 

 suboral pore, and in dried specimens there is frequently an 

 opening here. 



JSTo ova or ovaria have been found in any of my sections, 

 wdiereas some show an embryo about half filling the zooecium, 

 though no external difference has been noticed. 



The operculum is interesting, as it has at each side a projection 

 or wing at right angles to the operculum (figs. 15, 16); also at 

 each distal corner there is a slight projection. The wing reminds 

 lis somewhat of the thin membranous growth of many Mem- 

 braniporge and some Microporaj. 



There are 9-11 tentacles. 



Log. Red Sea (Aud.) ; Naples, Trieste, Rapallo, Nice, Cette, 

 Corsica, Algiers, Tunis, Tyre, Calvados, Egypt, Victoria (Aus- 

 tralia), Cape York, New Zealand, Atlantic (fide Carus) ; Canaries 

 (d'Orb.). Wasin, Brit. East Africa, 10 fath. (500), on calcareous 

 seaweed, collected by Ci-ossland. 



Cellar lA. 



Levinsen, following Norman, uses Cellularia for what we 

 luidersta.nd as CeUaria, but as these names have long been used 

 for widely distinct genera I must certainly, in the most definite 

 manner, refuse to use the name Cellularia for what we have for 

 many years understood as Cellaria. 



Cellublaria of Pallas was a simply ridiculous jumble of forms for 

 which a place had not been found elsewhere. The species men- 

 tioned by him are now placed in nine genera, one of which is the 

 Cyclostome Crista., and as the description of the genus refers to 

 the ovicell of Crisia, -perhaps the least objectionable thing would 

 have been to have retained the name Cellularia for Crisia. The 

 real difficulty, however, is that the name Celhdaria has been 

 retained for a quite diflferent group, and to interchaiige and now 

 use a name long understood in a different sense would cause the 

 greatest confusion. 



Solander employed the name Cellaria for a group approxi- 

 mately, but not absolutely, similar to the Celhdaria of Pallas, 

 giving a definition also not quite the same, and it has been con- 

 sidered to be only a change of spelling, though cui-iously, Ellis & 

 Solander never indicate that they considered it was the same as 

 Cellularia of Pallas, nor thi'oughout the description of the genus 



