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PEOF. A. C. SEWAKD A]!fD MR. T. N. LESLIE Olf [Feb. I908, 



places (text-figs. 2 & 3). With the exception of two or three lateral 

 anastomoses, one of which is shown in text-fig. 3, there are no 

 cross-connexions between adjacent veins. The chief difference 

 between this specimen and the genus Tceniopteris, apart from the 

 very rare anastomoses, consists in the greater inclination of the 

 lateral veins to the midrib — a difference, perhaps, of no great 

 importance. The fossil does not conform in its venation to normal 



Figs. 2 & 3. — Glossopteris angustifolia, 

 dichotomously -branched secondary 

 conneocion in fig . 3 . (x3^.) 



var. tseniopteroides, nov. 

 veins shoivinq one cross- 



specimens of Glossoj^teris, A plant figured by Sir WiUiam Dawson, 

 from New Brunswick, as i%aZopi^ris (JSeuropteris) Datt^som, Hartt,^ 

 exhibits a close resemblance to the Vereeniging leaves ; the venation 

 is of the same type, except in the apparent absence of cross - 

 connexions between the veins of the Canadian fossil. Dawson 

 notes a close resemblance to Glossopteris, and adopts the sub-generic 

 title Megalojpteris in order to give point to his hesitation in 

 describing the leaves as those of the genus Neuropteris ; he describes 

 the New Brunswick plant as pinnate, and a figure published by 

 Andrews- shows the compound nature of the frond. Fontaine & 

 White ^ record a second species from the Upper Carboniferous strata 

 of Yirginia, and their species — M. seiuellensis— is mentioned by 

 David White'' from the Pottsville Series. A more recent record of 

 a plant assigned to Megalopteris is by Mr. Arber' in his description 

 of the fossil flora of the so-called ' Culm-Measures ' of North- West 

 Devon ; a fragment of a leaf which he submitted to Mr. Kidston 

 was compared by that author with Dawson's Megalopteris. The 

 Devon fragment has a breadth of nearly 5 centimetres ; the veins 



1 Dawson (71) p. 51 & pi. xvii, figs. 191-94. 



2 Eeproduced by Prof. Zeiller (00) fig. 85, p. 111. 



3 Fontaine & White (80) p. 11. 



4 White (95) p. 315. 



5 Arber (05) p. 307 & pi. xx, fig. IG. 



