litth-lcnown Goniatites/rom Ireland. 



437 



growth) probably with a feeble lateral crest and a broad and 

 deep hypoiiomic sinus. Chambers shallow ; suture-line as in 



Perici/clus clanensis.— Lateral view of the type specimen. The specimen 

 nas been rubbed down so much, that there are only very slight indi- 

 cations of the ornaments of the test ; these are not shown in the 

 figure. Carboniferous Limestone : Clane, Co. Kildare, Ireland. 

 Drawn from an example in the Science and Art Museum, Dublin. 

 About three fifths natural size. 



fig. 5. Test ornamented with coarse and rather irregular 

 lines of growth, which pass from the umbilicus obliquely 

 across the whorl, and at the margin of the periphery turn 



Fig. 5. 



Suture-line of Pericyclvs clanensis.— Carboniferous Limestone : Clane, 

 Co. Kildare, Ireland. Drawn of the natural size from the type 

 specimen in the Science and Art Museum, Dublin. 



abruptly backward, becoming somewhat more prominent and 

 forming on the periphery a deep and fairly wide hyponomic 



