Slide showing two drawings: 'Fig. 152' - a tube of Pectinaria auricoma, and 'Fig. 153' of a tube of Terebella conchilega. Slide shows two drawings: 'Fig. 152' - a tube of pectinaria auricoma, and 'Fig. 153' of a tube of terebella conchilega. Title below images reads: 'Fig 152 - the tube of Pectinaria auricoma x3 (from McIntosh). This is its natural position as carried about by the animal. Fig 153 - the upper end of the tube of Terebella conchilega. Slightly enlarged. (From McIntosh)'. Late 19th to early 20th century