Coins Gardneri. T. Fetch. 127 



broad. These wrinkles seldom extend right across the arm, 

 but those which begin at the sides thin out and are finally 

 wedged between others which arise on the inner face. The 

 separate wrinkles have a smooth white rounded outer edge. 

 In longitudinal section, it is seen that these wrinkles are merely 

 folds in the wall of the arm. 



The arm of Lysums Gardneri bears its glebiferous layer 

 along the middle two-thirds or three-quarters of its length, 

 the base and apex being free. The layer extends laterally 

 almost completely round the arm, being interrupted by a 

 deep narrow furrow on the outer side. This furrow is usually 

 so narrow that it is hidden by the projection of the gleba over 

 either edge. The glebiferous layer is slightly furrowed trans- 

 versely, but the whole surface is minutely granular, the granules 

 being the ends of thin processes, or the irregular edges of 

 contorted plates, so closely packed together that their outer 

 ends form a continuous surface. These processes arise from 

 the wall of the tube which forms the arm, and as they are 

 1-5-2 mm. long, they constitute the greater part of the thickness 

 of the arm. As in Clautriavia (Dictyophora) irpicina, the 

 glebiferous layer, after the removal of the gleba, is dark oliva- 

 ceous, not white. 



The above is the fundamental distinction between the two 

 species. Lysurus australiensis has a glebiferous layer, similar 

 to the commoner type in phalloids ; Lysurus Gardneri has a 

 "ruguiose" glebiferous layer, practically identical with that of 

 Clautriavia irpicina. 



The less important points of difference are numerous, and 

 would be sufficient to maintain the two species distinct, if 

 they belonged to the same genus. 



The arm of Lysurus australiensis is irregularly chambered 

 below, and becomes a simple tube, with a wrinkled wall, above. 

 The wTinkled glebiferous layer is continued from arm to arm 

 round the sinus between the arms. (It may be noted that a 

 continuation of the gleba may mean nothing, because the soft 

 gleba mass may be washed down into an abnormal position, 

 but, on the other hand, the continuation of the glebiferous 

 layer postulates a definite type of structure.) The head of L. 

 australiensis may be roughly compared to a star-shaped disc, 

 perforated in the centre, glebiferous along the whole outer 

 edge, the points of which have been turned up. The comparison 

 is not a very accurate one, as it ignores the continuation of the 

 glebiferous tissue across the inner surface of the arms. But 

 it may serve, as it illustrates also the fact that the "head" 

 consists not only of the arms, but also includes the upper edge, 

 or rim, of the tube which constitutes the stalk. This "head" 



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