xcii INFERIOR OOLITE AMMONITES. 



last whorl of the figured specimen. Then there is the change to the striate stage. 

 The carina, though small at the commencement of the last whorl, is distinct ; it 

 gradually becomes less so, and is finally a mere ridge on a subtabulate periphery. 



Distinction. — There is no need to point out how it differs from Psgr. liter utwn ; 

 rather, attention may be directed to how it agrees in the radial curve, mode of 

 costation, and general figure. 



Locality and Stratum. — Dorset: Bradford Abbas, in a rather soft, yellow, iron- 

 shot marl (two specimens, one passing a little towards next species). 



Date of Existence. — Bradfordensis hemera, probably. 



•3. Psbxtdogeaphoceeas LiMATUM, 8. Buchnan. Suppl., Fig. 54 in text. 



*m 



Fig. 54. — Pxevdographoceras Umatnm. 



Description. — August igradumbilicate, striate, obsoleticarinate. 

 Distinction . — From P. deletum, smaller umbilicus, earlier failure of costas. 

 Note. — The tendency to increase the peripheral projection of the radial line 

 noticeable in P. deletum is continued in this species. 



Locality and Stratum. — Dorset: Stoke Knap in the Building Stone, layer 6. 

 Date of Existence. — Bradfordensis hemera. 



Psei dogeaphoceeas ? sp. Foreign. 



1886. Harpoceras, sp. indet., Vacek, Ool. Cap. S. Vigilio ; Abh. k. k. geol. 



Reichsanstalt, Bd. xii, No. 3, pi. viii. 

 fig. 1. 



Remarks. — This is a foreign species of a series akin to Pseudographoceras. It 

 has the V-script, and close-set, regular costae, as well as the subdistinct carina like 

 P. literolinn, but it is more compressed and more unibilicate. 



