16 GoeJ. 
C(ELENTERATA. 
Graptolites. 
Kirchenpauer (12) discusses the relations between the Graptolites ViJid. 
the Plarnulariidce ; the hypothesis that the cells of Graptolites are not 
hydrothecjB, but only nematothecae, is hardly tenable : the Graptolites 
are rather comparable with the Sertulariidce, 
F. McCoy: “On a new Victorian Graptolite*' Ann. N. H. (4) xviii. 
pp. 128-130. Gr. Linnarsson : “ On the vertical range of the graptolitic 
types in Sweden,” Geol. Mag. (2) iii. pp. 241-245. H. A. Nicholson : 
“ Notes on the correlation of the graptolitic deposits of Sweden with 
those of Britain,” tom, cit. pp. 245-249, pi. ix. 0. Lapwortii : On Scottish 
MonograptidcUy tom. cit. pp. 308-321, 350-300, 499-507, 544-582, 
pis. x.-xiii. & XX. {Dimorphofjraptus^ P* 645, for D. elongatus, p. 547, 
and swanstoni, p. 548, pi. xx. figs. 12 & 13 ; new species of other genera 
are also described) [Abstract of these papers; JB. f. Mineral, xlv. 
pp. 109-112.] A note by Dames on Dictyonema and its relation to 
Diplograpsus ; J. Geol. Ges. xxviii. p. 776. 
