6 



The specimen thus invites a comparison with the families 

 of Cordaiteae and Noegerrathiae in connection with allied 

 genera and with a number of discoveries made in recent 

 years with reference to the Gymnosperms of the Palae- 

 ozoic. 



Mr. Lacoe's specimen is flattened out on a slab of grey 

 sandstone, and was collected by him in the Lower Catskill 

 (Upper Devonian) of Meshoppen, Wyoming Co., Pennsyl- 

 vania. Mr. Lacoe informs me that it is there associated 

 with Archasopteris minor and A, major, Lesqx., and in neigh- 

 bouring quarries half a mile distant and about fifty feet 

 higher in the series, there are different species of Archaeop- 

 teris, including one identified with A. Hibernicus, and a stro- 

 bile apparently of Lycopodites Richardsoni, a form character- 

 istic of the Upper Devonian of Perry in Maine. These beds 

 have also afforded to Prof. White a species of Spirifer, and 

 the Stylonurus excelsior of Hall. 



I may add that I described, some years ago, 1 under the 

 name Noeggerathia G-ilboensis, a specimen from the collection 

 of Mr. Lockwood of G-ilboa, New York, and from the 

 Cheming group, which was kindly communicated to me by 

 Prof. Hall. It differs from the present species in the form 

 of the leaves and also in the veins being simple and appar- 

 ently of two orders. Its characters are as follows : " Leaf 

 rhombic-obovate, with a broad base. Nerves or radiating 

 plicae nine in number, not forked, and with fine striae 

 between them. Length 3 T % inches. Breadth 2J inches. It 

 seems to have been bent in a conduplicate manner, and clasp- 

 ing or decurrent, on a stem or branch. The form tends to 

 that of Dolerophyllum, though the species has been referred 

 to Nceggerathia." 



I may also add that the only undoubted Devonian Cordai. 

 tes previously in my collections, is C. Robbii from the middle 

 Devonian of St. John, New Brunswick. This is a long and 

 broad parallel-sided leaf, pointed at the extremity, and clasp- 

 ing at the base, with parallel veins, and nearly akin to G. 

 borassifolia of the Carboniferous. With it are found species 



1 Quarterly Journal Geological Society, 1871. 



