86 University of Texas Bulletin 



convexity of more than a right angle. The curvature of the venter is 

 nearly elliptical ; a keel is lacking, but at the ventral midline of the latest 

 part of the coil there is a perceptible rounded angulation. The dorsal 

 region of the last volution has a more nearly circular curvature than the 

 venter, and the venter of the next younger volution is therefore taller 

 and more nearly circular than the outer volution. 



SUTURE : Goniatitic, as in Flickia simplex Pervinquiere, from which 

 it differs only in minor details. All of the sutural elements are less tall 

 and relatively less slender than in the African species. As in that species 

 there are three lateral saddles and three lateral lobes; of these the first 

 and second lateral saddles and most of the second lateral lobe lie upon the 

 flank, while the remainder of the visible suture lies On the steep umbilical 

 wall. The siphonal lobe is bifid with two low, rounded points and a cen- 

 tral (external) saddle; the saddle has a greater breadth and is considerably 

 less pointed than the lobules, in fact it has a very broad, even, arcuate 

 curvature. The first lateral saddle is broad, non-angulate, evenly curved 

 and almost as tall as broad; its breadth occupies nearly half that of the 

 flank. The first lateral lobe and the second lateral saddle have almost 

 the same size and shape: each is rounded terminally, having almost a 

 circular curvature, and slightly more constricted basally; and the second 

 lateral saddle has in one instance a very slight suggestion of angularity, 

 like Neolobites. The second lateral lobe and the third lateral saddle are 

 low, broad and non-angular. The foregoing description is from the type 

 individual. 



Fig. 9. Flickia boesei n. sp., type individual, sutures, camera lucida drawing, x 8. 



Pervinquiere 1 established the genus and species Flickia simplex to in- 

 clude a small ammonite with simplified suture remotely like Neolobites, 

 from the Vraconnian of Tunis. Comparing the latest sutures of the 

 two types, 2 ' we find that the first lateral saddle of the Texas species is 

 somewhat lower and broader than that of Flickia simplex; the second 

 one is higher and lies entirely upon the flank, while in the African species 

 it appears to lie partly upon the umbilical wall; the external saddle of 



Pervinquiere: Et. pal. tun., p. 212, pi. 9, figs. 2-5, text figs. 80, 82. 



