L046 DR R. K1DST0N, MR T. C. CANTRILL, AND MR E. E. L. DIXON. 



enlarged two times at fig. 3a. # At a and a, fig. 3a, are seen the two oblong truncate 

 lappets of the sporophyll, which are formed by a cleft that extends inwards as far as 

 the dotted line a. From the base of the cleft a furrow extends a little further 

 inwards, but dies out on reaching the collar that surrounds the stem as a circular 

 disc, b. At a and a" two oblique furrows sloping inwards mark the limit of the 

 cleft which forms the two quadrate free lappets. At c and c a concentric circle of 

 small pit-like depressions are seen ; these indicate the position of the outer concentric 

 circle of sporangia, which were attached to the lower surface of the sporophyll, 

 and at c and c are seen the scars of the inner concentric row of sporangia. 

 From the part marked a inwards the sporophylls are united to each other and form 

 a disc-like sheath which surrounds the axis. 



The full length of the exposed portion of the sporophyll is 1'2 cm., but probably a 

 small part is hidden by the free part of the whorl below extending slightly over it, 

 and its width at the extremity is 4 '5 mm. The terminal lappets are individually a 

 little over 2 mm. wide, and the length of the cleft which separates them is from 

 5 to 6 mm. long. 



A more perfect fragment of a cone, which is about 11 cm. long and 2*2 cm. broad, 

 is given at figs. 4 and 5, natural size. 



The whorls are closely placed, being about 80 mm. apart ; the axis seen at a is 

 about 4 mm. broad (figs. 5 and 5a), and has prominent ribs, of which there are five on 

 the exposed surface. The ribs are distinctly striated longitudinally. 



Neither the apex nor the base of the cone is preserved, but the remaining 

 portion indicates that it must have been of considerable size. The whorls consist 

 entirely of sporophylls, and they have been bent upwards so that they exhibit 

 their lower surface. Only half of the sporophylls which compose the whorls are 

 exhibited, and as there are five shown, probably ten was the complete number 

 in a whorl. 



The basal portions of the sporophylls are united into a collar which surrounds the 

 stem. This is specially well seen on the counterpart given at fig. 5, of which a 

 portion is enlarged two times at fig. 5a, where, at b, the collar is seen surrounding the 

 axis a. The sporophylls in this species do not, however, appear to have spread 

 directly outwards as in Cingularia typica, for at f, on fig. 5a, a distinct knee is 

 formed within the united portions of the sporophylls, from which level they appear 

 to bend upwards somewhat suddenly. The cleft which divides them into two 

 smaller lappets terminates at the inner' ends of the folds, of which one is seen at g. 

 The sporophylls bore four sporangia, one on each of the smaller lappets, forming an 

 outer concentric circle of which the points of their attachment can be seen at d' and 

 d", and an inner concentric circle, seen at e and e" '. None of the sporangia are 

 preserved on the specimen. 



Irrespective of other differences, such as the size of the cone and the cup-like 



* Figs. 3 and 3a have been placed on the plate in inverted position. 



