Permo-Carboniferous Ammonoids of the Glass Mountains 65 



narrower at its upper end than above its bottom, and is divided into 

 three branches, of which the middle one is the longest and not closed, 

 while the two others are short and pointed. The first lateral lobe 

 lies on the ventral shoulder, is exceedingly wide, and is divided into 

 four very unequal branches by three secondary saddks. The deepest 

 of these branches is the one nearest the umbilical side ; it is not nearly 

 so deep as the siphonal lobe, but deeper than the second lateral one. 

 This branch is curved with the convexity toward the umbilicus. It 

 is separated from the next secondary lobe by a high secondary saddle 

 strongly bent over toward the umbilicus. It is entire and rounded at 

 the top. The next secondary lobe is funnel-shaped, pointed and very 

 small. The third secondary lobe is only a slight indentation, while the 

 last secondary lobe is deeper and rounded. The intervening saddles are 

 not well separated by the indentation mentioned, but rather appear 

 as a larger secondary saddle with an indentation on the inner flank. 

 The second lateral lobe is not quite symmetrical, but rather curved with 

 the convexity toward the ventral region. It is narrower at the top 

 than below the middle and slightly pointed at the bottom. The first 

 auxiliary lobe is curved with the convexity toward the ventral region. 

 It is a little narrower at the top than below the middle, quite asym- 

 metrical and pointed. The second, third and fourth auxiliary lobes 

 are symmetrical, pointed and somewhat narrower at the top than be- 

 low the middle. The fifth auxiliary lobe, near the umbilical border, 

 is similar to the preceding ones, but is more or less of the same width 

 in its ujDper as in its lower half. The sixth auxiliary lobe on the um- 

 bilical wall is very small but similar in outline to the fifth. 



The saddles are all entire and rounded. The external saddle is 

 moderately high and bends over toward the siphonal region ; it is not 

 constricted. All the lateral saddles on the flank are of the same 

 shape, rounded at the top and more or less constricted above the base. 

 The first and second lateral saddles are higher than the external and 

 very similar to each other with respect to length and width. The first 

 auxiliary saddle is considerably shorter, and from this on to the fifth 

 on the umbilical shoulder, the saddles decrease steadily in length and 

 width. The form of the saddles on the umbilical wall could not be 

 distino-uished but they certainly resemble those of Uddenites Schuch- 

 erti nov. sp. 



