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the individuals were on the "back" of the host; but some were found on its "front" surface. 

 The form of the body may be regarded as an exaggeration of that of L. annelidicola Van 

 Beneden and Hesse ; as represented by Prouho l ). But while in L. annelidicola the marginal 

 expansion is incomplete at the proximal end, leaving an emargination through which the short 

 stalk projects, the proximal end of L. cocciforme is not emarginate and completely covers the 

 retracted stalk. The two species appear to be related to one another, although I have not been 

 able to ascertain whether the bud of L. cocciforme possesses a foot-gland, a structure which 

 is completely absent, even in the buds, according to Prouho a ), in L. annelidicola. 



The buds of L. cocciforme are obviously not numerous, as is indicated by fig. 26, in 

 which a single . moderately large bud is seen on one side, projecting beyound the margin of 

 the calyx of the parent-individual. Ovaries and testes appear to occur in different individuals; - 

 as I have found to be the case in all the other 'Siboga' species in which I have been able to 

 obtain definite evidence on the subject. In the specimen represented in fig. 28 several embryos 

 are seen inside the vestibule. 



Waters 3 ) has recorded L. singulare, Franz-Josef Land, from a depth of 234 fathoms ; 

 and states that this appears to be the greatest depth at which the genus has been found. The 

 present species, from 469 Metres (= about 256 fathoms), was obtained in even deeper water 

 than the record indicated. 



Fam. 2. Pedicellinidae Johnston *). 



There has been considerable difference of opinion with regard to the number of genera 

 which should be recognised in this Family. While the type-genus possesses a stalk which is 

 uniformly muscular and has no differentiated enlargement at its base, a number of other species 

 are distinguished by having a specially contractile portion at the origin of the stalk from the 

 stolon. Several of the 'Siboga' species are thus characterised ; but the following species comes 

 within the original genus. 



Pedicellina M. Sars. 



1835, "Beskr. og Iagtt. over Bergenske Kyst levende Dyr", p. 4. 



This genus is distinguished from Barentsia by having a stalk of uniform thickness, not 

 differentiated proximally into a special muscular enlargement. 



1) Prouho, H., 1891, Arch. Zool. Exp. (2) IX, PI. V, figs 3, 7. 



2) t. cit., pp. 110, 113. 



3) Waters, A. W., 1904, "Bry. Franz-Josef Land", II. J. Linn. Soc. Zool., XXIX, p. 181. 



4) In the 'Challenger' Report, Part 50, 1886, p. 40, Busk gives "Pedicellinidae Hincks"; referring apparently to "British Marine 

 Polyzoa, 1880, p. 563, where the Family is characterised. But, as shown by Busk's citations, Johnston, in his "History of the Britlsh 

 Zoophytes", Ed. 2, 1847, p. 381, had already used "Family Pedicellinae", referring to Gervais, 1837, as giving "Polypiaria Pedicellinea". 

 In Gray's "List of the Specimens of British Animals in the British Museum", Part I, 1848, p. 93, "Fam. Pedicellinidae'' is delinitely 

 used, and it is detined on p. 145. The facts thus seem to be that Johnston established a Family for the genus which M. Sars had 

 described in 1835, although Gray was the first to use it with the terminalion -idae, and to give it a diagnosis. 



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