new or little -low ion Goniatites/row Ireland. 437 



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

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



Fi-. 4. 



Pericydus clanensis.— Lateral view of the type specimen. The specimen 

 has been rubbed down so nnich, that there are only very slight indi- 

 cations of the ornaments of the test ; these are not s'hown in the 

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

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

 About three tifths 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 



Fi^. 5. 



Suture-line of Periciidus clanmsis. — Carboniferous Limestone : Clane 

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

 specimen in the Science and Art Museum, DubHn. 



abruptly backward, becoming somewhat n)ore prominent and 

 forming on the periphery a deep and fairly wide hyponomic 



