. Annual report. New York State Museum; Science; Science. i8o NEW YORK STATE MUSEUM lozenge-shaped meshes. There are about six to eight meshes in 10 mm transversely and two to three in the same distance longitudinally in the compressed state. The thecae and the base have not been seen. Formation and locality. Discovered by Mr'H. C. Wardell in a quarry of the Becraft Cement Co. in the New Scotland beds at Jonesburg on Becraft mountain, near Hudson, N. Y. where in association with Dictyo- n e m a crassu m it is not uncommon. Remarks. As in the case of Dictyonema crassum, the possi- bility of the
. Annual report. New York State Museum; Science; Science. i8o NEW YORK STATE MUSEUM lozenge-shaped meshes. There are about six to eight meshes in 10 mm transversely and two to three in the same distance longitudinally in the compressed state. The thecae and the base have not been seen. Formation and locality. Discovered by Mr'H. C. Wardell in a quarry of the Becraft Cement Co. in the New Scotland beds at Jonesburg on Becraft mountain, near Hudson, N. Y. where in association with Dictyo- n e m a crassu m it is not uncommon. Remarks. As in the case of Dictyonema crassum, the possi- bility of the identity of this species with the longer known Hamilton form D. cadens Hall (D esmograptus devonicus Gurley) sug- gests itself, and to continue the parallel, here also the similarity is great enough to indicate close relationship but not sufficient to warrant identifi- cation, in the face of the considerable time inter- val from the base of the Paleodevonic to the top of the Mesodevonic. The meshes are in this form narrower or relatively longer, so that meas- ured transversely there are counted more in the same distance, while in the longitudinal direction they are about of equal size. The meshwork looks, therefore, when compared with that of D. c ad e n s, as if it had been slightly pulled in the longitudinal direction. The branches are also somewhat thinner than in the latter Fip. 86 Desmograptus becraft- ensis sp. nov. Enlargement (\-35^) of portion of type specimen Desmograptus cadens (Hall) Plate 4, figure 1 Dictyonema cadens (nomen nudum) Hall. Can. Org. Rem. Dec. 2. 1865. Desmograptus devonicus Gurley. Jour. Geol. 1896. 4:84 Gurley's description is : Polypary very irregular in its mode of growth ; scarcely a true dissepi- ment present. Branches dividing and re-fusing irregularly, leaving round elliptic or round quadrangular (the prevailing type) meshes. The irregu- larity renders an accurate count of the branches difficult, but there seem to be about 12-15 m
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