. Annals of the New York Academy of Sciences. Science. 152 ANNALS NEW YORK ACADEMY OF SCIENCES As a matter of special interest, but also of insufficient evidence, the strange arrangement of several specimens around a common center demands careful attention. It was originally figured by Salter and Goeppert. Afterward, however, it was questioned by the majority of authors, but was recently again mentioned by Fearnsides ((3), p. 307) and I likewise have observed some examples, particularly of early stages which can be classed herewith. Fig. la on plate XXI presents two Dictyonemas opposite each o
. Annals of the New York Academy of Sciences. Science. 152 ANNALS NEW YORK ACADEMY OF SCIENCES As a matter of special interest, but also of insufficient evidence, the strange arrangement of several specimens around a common center demands careful attention. It was originally figured by Salter and Goeppert. Afterward, however, it was questioned by the majority of authors, but was recently again mentioned by Fearnsides ((3), p. 307) and I likewise have observed some examples, particularly of early stages which can be classed herewith. Fig. la on plate XXI presents two Dictyonemas opposite each other, each of them attached to a minute common disk. Fig. 2c shows two young individuals joined to each other by means of their proximal parts. I observed also four full-grown speci- mens of the variety acadica m. f. ruedemanni, uniting as appears in the text-figure 2. In all the examples studied, no nema and only once a common disk is present, so that an imme- diate fixation by the basal parts of the colo- nies must be assumed. If this is the fact, which I am rather inclined to hold on ac- count of the specimen discussed, a colonial arrangement of the third order possibly ex- isted comparable with Diplograptus pristis. The statements thus far made about the association of the faunula with Dictyonema fig. 2.—Dictyonema flaoeiuforme flabelliforme do not vary to any consider- var. acadica m. f. ruedemanni able extent, provided that we will except the fossils gathered from interbedded limy nodules ("orstensbollarne"). G. F- Matthew25 pointed out that in the Dictyonema-shales of New Brunswick, two bands (b, c) are distinguish- able, namely, a lower one with var. conferta as the predominant type besides var. acadica and a higher one containing. an abundance of the var. acadica and also var. norwegica. At Navy Island, both zones fur- nish the "Bryograpti" and a few brachiopods, the latter being better represented on the section of McLeod brook. In the sl
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