Lysidice collaris. A.- Anterior end (dorsal view). B.- Buccal equipment. C.- Limbated capillary chaetae. D.- Pectinated chaetae. E.- Falcigerous compound chaetae. F.- Acicular chaetae. G.- Aciculum. H.- Labrum. Lysidice ninetta. I.- Anterior end (dorsal view). J. Aciculum. K.- Acicular chaetae. L.- Buccal equipment. Scale bars all in micrometers, except A and I (mm).