C\MRRIAN BRACHIOPODA: OBOLELLA, SUBGENUS GEYP- 

 TE\S: BRlAi OBOEUS, SUBGENUS WESTOMA; AVITH 

 DESCRIPTIONS OE NEW SPECIES. 



Bv Ciiaui.es I). Walcott, 



Hononu'D Curator, D'lrhhm ,,f Strdllffrnjihir Paleontologi/. 



TABLE OF CONTENTS. 

 OBOLELLA A>D NEW SUBGENUS GLYl'TIAS. 



Obolella mohergi, new species. 

 Oholdla linddromi, new species. 

 Obolella {gh/pthts) fnwm Linnarsson. 



BICIA, A NEW (4ENUS OF THE OBOLID^. 



Bicia gemma Billings, notes on. 

 Bkia tvlittearefii, new species. 



OBOLUS, ADDITIONAL NOTES ON. 



Obolus f meneghini, new species. 

 Obolus tetoire)isis, new species. 

 Obolus ? zoppi, new species. 



LINGCI.ELLA, NEW SPECIES ANP NOTES (IX PREVIOUSLY DESCKIBED SPECIES. 



0. (L.) belhis Walcott, notes on. 



0. (L.) boruemawd, new species. 



0. {L. ) bicensis, new species. 



0. {L.) linnarssoni, new species. 



0. (i.) randomenm, new species. 



0. (L.) lichucherti, new species. 



0. (L.) siemiradzkii, new species: 



O. (L.) v'nionn var. convexns, new variety. 



WESTONIA, NEW SUBCJENUS OF OHOI.US. 



O. {LirigulejMs) gregwa Matthew, notes on. 



ACHITIS, NEW SPECIES OF 



0. (.-ler(7/.s f) riigaliiK, new s])ecies. 



CAMBKIAN BKACHIOPODS OF SARDINIA. 



Proceedings U. S. National Museum, Vol. XXlll— 1229 



669 



