(T 
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MEETING OF THE BRITISH ASSOCIATION. 303 
Clathraria had a simple or bifurcated stem, with the internal structure 
of Cycas. The lozenge-shaped scars are alternately large and small, as 
m the recent genus, showing the close relationship between the livin a 
plant and the fossil ; and this is further established by the fruits which 
have been found in the same beds, and which agree generally with 
those of Cycas. Four species have been found— three from the south 
of England (Clathraria Lyellii, Mant., C. MantelU, Car., and C. Buck- 
landii. Car.), and one by the late Hugh Miller, at Brora, in Scotland 
'leri, Car.). A cylindrical stem, having the general appearance 
of Clathraria, but with uniform scars on the stems, and seeds in ter- 
minal cones, was named by the author Tatesia, after a member of the 
Association who had first drawn his attention to the fossil, and who 
had rendered him great help in his researches. A single species of this 
genus occurs in England (T. Morisii, Car.), and three have been found 
m Frnnce. Buckland's genus Cycadoidea had bulbiform trunks, with 
small branches, which differed from the bulbils of recent Cycads in 
that they were permanently attached to the stem. In addition to the 
three species already known (C. megalophylla , Buck., C. ,,/icrophylla, 
Buck., and C. pygmaa, Lindl. and Hutt.), Mr. Carruthers described 
one which had been found by Mr. Charles Peach at Helmsdale, and 
which the author dedicated to that distinguished naturalist (C. Peachii, 
Ul,, -)> and a fifth species had been obtained from the Potton Sands. 
*ne most remarkable form described was one to which the author save 
tl 
M name liennettites, after his colleague, whose advice and assistance 
3n tins, as in every other work in which he had been engaged, had been 
more value than he could express. Two species were described, 
both from deposits in the Isle of Wigbt (B. Saxbyl, Car., and C. Gib- 
*>»*, Car.). One had been exhibited and shortly described to the 
-Linn can Society by Kobert Brown. The genus was characterized by 
aving an elliptical bulbiform stem, a single woody cylinder, from which 
e Vasc ular tissue for each leaf separated en masse, as in the stem of 
eri *s, but passing outwards through the cortical cellular layer. The 
structure of the fruit was minutely described. It was borne on short 
ranches s the seeds were supported on the ends of branched vascular 
UBdleSj which the author considered analogous to the altered fruit- 
earing leaves of the genus Cycas, but wanting the cellular tissues 
" lc h form the blade of the leaf. The various genera represented the 
u o subtribes of recent Cycads, while Bennettites shows a Structure 
y 2 
