new or little-known Goniatites/Vom Ireland. 



451 



Horizon and Locality. Carboniferous Limestone : Kildare, 

 Ireland (? Rathkeale, Co. Limerick, Ireland). 



Prohcanites Leesoni, sp. n. (Fig. 15.) 



Sp. char. Shell discoidal, compressed, rather narrowly 

 umbilicated • greatest thickness at the margin of the umbili- 

 cus, about one third of the diameter of the shell ; height of 

 outer whorl about four ninths of the diameter of the shell. 

 Whorls (? number); inclusion three fourths; umbilicus 

 shallow, witli subangular margin and sloping sides, about 

 two sevenths of the diameter of the shell in width. Whorl 



Fig. 15. 



Prolecanites Leesoni. — a, lateral view of the type specimen ; b, front view 

 of the same. Carboniferous Limestone : Glenbane East, Limerick, 

 Ireland. Drawn from an example in the collection of the Geological 

 Survey of Ireland, Lublin. About three fifths natural size. 



subtrapezoidal in cross-section, its width about three fourths 

 of its height ; indented to about two sevenths of its height by 

 the preceding whorl ; periphery somewhat imperfectly defined, 

 very feebly convex, somewhat flattened ; umbilical zone 

 narrow, well defined, sloping towards the centre of the umbili- 

 cus. Body-chamber apparently occupying nearly the whole 

 of the last whorl ; aperture not seen, but (judging by the 

 growth-lines) the peristome probably nearly straight on the 

 lateral area, and with a fairly wide and moderately deep 

 hyponomic sinus. Chambers (? depth) ; suture-line not seen. 

 Test nearly smooth, with subregular growth-lines, which 



