SUPPLEMENT.— PSEUDOLIOCER AS. clix 



Dumortier's figure represents the species well, except that the last three ribs 

 are too coarse. 



Locality and Stratum.. — Gloucestershire : North Nibley, Bed 28 or 30, Section 

 vii, p. 40. This is commoner than the other species. 



Bate of Existence. — Lilli hemera. 



3. Pseudolioceras pumilum, 8. Buchman. PL xx, figs. 5, 6. 



1889. Pseudolioceras compactile, This Monogr., PI. xx, figs. 5, 6. 

 1902. pumilum, Emend. Ainm. Noin., p. 5. 



Description. — Perangustumbilicate, with tendency to widen; gradumbilicate, 

 inner margin rectangular ; costate ; periphery somewhat narrow, with tendency to 

 broaden, penetabulate. 



Distinction. — From P. gradatum, a smaller umbilicus, a broader periphery, with 

 more distinct areas each side of a less prominent carina. From /'. Dumortieri, 

 broader and more tabulate periphery. 



Remarks. — -This species shows signs of hypostrophy — in the tendency to excen- 

 trumbilication, broadening of periphery, and tendency to increase thickness of 

 whorl. It is, perhaps, a gerontic form of P. Dumortieri. 



Locality and Stratum. — Gloucestershire : North Nibley, Bed 28, Section vii, 

 p. 46. 



Date of Existence. — Lilli hemera. 



4. Pseudolioceras compactile (Simpson). 



1889. Pseudolioceras compactile, This Monogr., p. 85 (pais). 



1902. Harpoceras (Pseudolioceras) compactile, Janensch, Jur. Elsass ; Abh. 



Geol. Spez.-Karte-Elsass- 

 Lothr., N.F., H. 5, PL v, 

 fig. 5. 



Distinction. — From P. gradatum, the concavumbilicus. 



Notes. — Remove from the synonoiny, p. 85, Amm. lythensis, falcodiscus, and 

 compactile (Haug). Remove the references to plates of this Monograph. Transfer 

 description to P. gradatum. 



Bemarhs. — A sloping inner margin and a regular concavumbilicus characterise 

 this species according to Blake's figure and description. See p. 8(5 of this 

 Monograph. 



Apparently Denckniann's .1. Wurttenbergeri cannot be separated from this 

 species; at least, it has the same concavumbilicus as Blake's figure. 



