OTOZAMITES. 67 



V. 2740. PL VII. Fig. 7. Specimen 37cm. long; 13 pinnse 

 on one side. The marked variation in length of pinnae at the 

 upper and lower end of the rachis is well seen. Several segments 

 show the manner of insertion on the frond axis ; venation fairly 

 distinct. The pinnae present a strongly convex surface, and are 

 slightly inclined to the horizontal plane of the rachis, as in 

 Weichselia Mantelli (Brong.), (Vol. i. p. 116). At the upper end 

 of the axis the pinnae bases are 2'7 cm. apart, towards the lower 

 end 2-2-5 cm. apart. The upper pinnae are practically identical 

 with those of V. 2170 (PI. VII. Fig. 9), but the shorter, broader, 

 and closer pinnae of V. 2170 are somewhat broader and closer than 

 any in V. 2740. 



V. 2740. 30 cm. long. The venation exceedingly well marked. 

 Rachis 5 mm. broad, flattened. Pinnae vary considerably in size 

 at the two ends of the frond, 4'8 X 2'5 to 3'5 X 2'1 cm. The 

 auriculate base of many of the segments clearly shown. For the 

 most part the segments overlap one another, oblique to the rachis, 

 and apparently of a thick and leathery nature. Cf. 0. Beanii. 

 Ecclesbourne. Ruffbrd Coll. 



V. 2912rt. PI. VII. Fig. 3. Rachis 33 cm. in length. Lowest 

 pinna 5-7 X 2-7 cm. ; uppermost 6-5 X 3. Venation in excellent 

 preservation. Apices bluntly rounded ; the lower edge of the base 

 appears to be more distinctly lobed than the upper. Smaller 

 pinnae like the larger ones in V. 2740, and the larger like those 

 of V. 2912, etc. 



V. 2912. This specimen shows six pinnae attached to the rachis, 

 three on each side ; pinnae 7 X 2' 7 cm. broad, do not overlap, 

 inclined to the horizontal plane of the rock surface. Rachis 

 striated longitudinally, and shows cross lines at intervals, but 

 the latter are no doubt simply minute transversely running cracks 

 in a mineral substance. Cf. V. 2090, V. 2122, etc. Ecclesbourne. 



Ru/ord Coll. 



V. 2745. PL VII. Fig. 5. Rachis 12 cm. long, with six pinna3. 

 Pinnae short and broad. Compare this specimen with V. 2336 

 (PL I. Fig. 3) and V. 2745 (PL I. Fig. 4). Largest pinnae 

 2'8xl'6 cm., lowest and smallest l'8xl'4 cm. Venation distinct. 

 Cf. upper end of V. 2740. 



