Zoology.-] NATURAL HISTORY OF VICTORIA. [Polyzoa. 



It differs from the last in its stouter habit, the mouth opening 

 more directly upwards, the single sub-triangular process on each 

 side, and the radiately marked or cribriform ocecia. 



Explanation op Figures. 



Plate 105. — Fig. 5, specimen, natural size. Fig. 5a, portion of same, magnified. Fig. 5b, 

 another portion, more highly magnified. Fig. 6, two cells and radiately marked oajcium (from 

 dried specimen), viewed in front. Fig. 7, portion of a specimen mounted in balsam, showing 

 cribriform ocecia and portions of loose epitheca. 



These two species form a well-marked genus, for the second of 

 which I proposed in 1880 the name Urceolipora. Mr. Busk, in 

 the Challenger Polyzoa, having no doubt overlooked my previous 

 description and figure, describes a form which is probably identical 

 with U. nana as Callymmophora lucida, taking the name from the 

 loose veil-like disposition of the epitheca. I have not had an 

 opportunity of examining living or spirit-preserved specimens, but 

 I believe that this will probably be found a characteristic feature. 

 It is shown partly in figures 4 and 7, as well as in my original 

 figure, which are taken from specimens beautifully mounted in 

 balsam by Mr. J. B. Wilson ; and shreds of the membrane can also 

 be detected in some of my dried specimens. 



I am indebted to Mr. MacGillivray for the descriptions and 

 specimens of the Polyzoa on this plate. 



Frederick McCoy. 



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