Weno and Pawpaw Formations 87 



Flickia boesei is lower and more flattened than that of F. simplex; and 

 the siphonal lobe is narrower and taller and instead of being inflated, 1 

 tapers slightly to the end. The Texas type is probably juvenile, since 

 the living chamber is lacking, and since it is more similar to the younger 

 than to the older sutures of Flickia simplex. 



Such simplified ammonites afford few visible characters for comparison, 

 and therefore separations must be*made on the basis of slight superficial 

 differences. Very likely better preserved material will afford a more 

 secure basis for distinguishing the species and for defining its relation- 

 ships. Provisionally it is placed in Flickia on account of its form ana 

 suture. Since the species differs only slightly in form, cross-section and 

 suture from Flickia simplex, essentially the same arguments as to its gen- 

 eric position hold. It is notable, however, that in the Texas species the 

 resemblance to Neolobites suggested by Pefvinquiere is even more striking 

 than in Flickia simplex, especially in the very slight angularity of the 

 saddles. 



FLICKIA (?) BOSQUENSIS n. sp. 

 PI. 1, fig. 4; PI. 4, fig. 11 



There has recently come to light a peculiar Flickia-like ammonite, which 

 although not belonging to this genus as described by Pervinquiere seems 

 to stand closer to it than to any other genus, and is here described on 

 account of the possible light that it may throw on the relations of this 

 obscure group. This ammonite has prominent umbilical tubercles and a 

 few widely spaced low, rounded, coarse ribs, and the marginal tubercles 

 are lacking. In these respects it agrees with Neolobites, but is thicker, 

 more discoidal, has a more rounded keel, a more open umbilicus, and the 

 suture consists of three saddles and two lobes, the first saddle being much 

 taller and broader than the second. It will be seen that the suture has 

 fewer elements than in Neolobites, and in this respect is like Flickia. The 

 suture resembles that of Flickia in the simplicity, the roundness and the 

 non-angularity of its elements; it differs in having the siphonal lobe 

 broader and its sides more convergent towards the tip, the first lateral 

 lobe shorter than the siphonal lobe, and the first lateral saddle much 

 broader than the siphonal lobe. It differs from Flickia simplex and 

 F. boesei in having ribs and umbilical tubercles instead of being smooth. 

 The sutures on this ammonite are more numerous and crowded than in 

 either genus mentioned. Due to lack of literature, a more exact generic 

 determination can not be given. 



1 Ibid., Pervinquiere, p. 214, fig x 82. 



