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THE ANNALS 



AND 



MAGAZINE OF NATURAL HISTORY. 



[FIFTH SERIES.] 



No. 65. MAY 1883. 



On the Affinities of the Genus Pothocites, Pater son ; 

 with the Description of a Specimen from Glencartholm, 



Eskdale. By Robert Kipstost, F.G.S. 



[Plates IX.-XIL] 



Introductory Remarks. 



Last November I communicated to the i Annals and Maga- 

 zine of Natural History 7 a short note u On the Affinities of 

 the Genus Pothocites 7 Paterson." 



In this was included the description of a specimen, provi- 

 sionally named Pothocites caIamitoides y which was collected 

 by Mr. T. Stock from the cement-stone group of the Calcifer- 

 ous Sandstone series, Glencartholm, Eskdale. 



In the present paper it is my intention to illustrate and 

 describe all the specimens of this genus which are known to 

 me ; the only one previously figured was that originally de- 

 scribed by Dr. Paterson j but as there are a few points in his 

 figure which are slightly misleading, I have thought it better 

 to refigure Pothocites Grantonii, Paterson, along with the 

 other specimens. This course is also advisable for the pur* 

 pose of comparison. 



Ann. & Mao. N. Hist. Sen 5. Vol. xi. 21 



