ABSTRACT
Balnllus4(i)"xii: II 155-266 body paris II 160-1 classificalion 111 16g: 13539.546-56
distributionlhabitau 111 147-50. 167--8
eyeslophthalmicganglia II 42 fossils II 168--9; 14(ij) 14-40
occurrence 9 4 (6). 34, 36. 44. 54. 55.96,112
lan'ae II g. IG. 12. 13 Section A II 16g: 13547--8 Section B 111 16g: 13 548-g SectionC 11I16g: 13549-52 Section D 111 16g; 13552 Section E II 16g: 135511--3 Section F II 169: 13553--6 shell morphology 111 36.54. 156--60,
,6g Varial ions 111 162-7 varieties 16 143 aclUta sec: Acruta ajnx 111 '49. 187---9: 13548.591
PL3( I) alliulII I I 150. 248-g; 13553.594
PL7(7) IIlIIlIrylliJ 111 149, 150.246--7; 13553.
