SUPPLEMENT.— PSEUDOGRAMMOCERAS. cli 



Distinction. — Lacks the furrows and the broad tabulate periphery of P. 

 Ssemanni. 



Locality and Stratum. — Somerset : Shepton Beauchamp, Upper Lias. I collected 

 the figured specimen from the north side of the cutting in the road leading from 

 Shepton to Boxtone Hill in strata with Hildoceras. Its position below the beds 

 yielding species of the Haugia jugosa-type attracted my attention at the time,, 

 being quite out of accord with that of other species of its genus. 



Date i if I'lrldciice. — Lilli hemera. 



15. Pseudogrammoceras pachu, 8. Buchman. Plate XXXIV, figs. 1,2; Fig. L47, 



p. clxvii. 



1887. ? Ammonites Ssemanni, Denckmann, Fauna von Doernten, PI. iii, fig. 2. 

 1890. Grammoceras S.emanni, This Monogr., PI. xxxiv, figs. 1, 2. 

 1902. Pseudogrammoceras pachu, Emend. Amm. Nom., p. 4. 



Description . — Subplaty-subleptogyral, sublatumbilicate, subspissicostate, peri- 

 phery convex. 



Distinction. — From P. obesum, the umbilicus is less concentric — it begins 

 with a smaller centre ; the whorls are somewhat flattened on the side, not 

 slightly gibbous ; the ribs are more flattened, more approximate, and slightly 

 different in curve. 



Locality and Strut nut,. — Gloucestershire: Cam Down, Dursley, Cephalopod 

 Bed, lower part — a much ironshot matrix. 



10. Pseudogrammoceras Muelleri (Dfurhnaint). Plate XXXIV, figs. 8, 9 ; Plate 



XXXV, figs. 1— 3 ; Suppl., 

 Figs. 148, 149, p. clxvii. 



1890. Grammoceras Muelleri, This Monogr., PI. xxxiv, figs. 8, 9 ; PI. xxxv, 



figs 1—3. 

 1902. Pseudogrammoceras Muelleri, Emend. Amm. Norn , p. 4. 



Remarks. — My young specimen differs from Denckmann's in having the 

 periphery a trifle narrower and more compressed, and not showing the indications 

 of furrows which he speaks of. 



