Bigelow. — Ctenophores. 



PLATE 1. 



HORMIPHORA PALMATA. 



Fig. 1. Side view of specimen 24 mm. long, in tentacular plane, with the 



pharyngeal rows of paddle-plates dissected away to show internal 



anatomy. 

 Fig. 2. Side view in tentacular plane of somewhat contracted specimen 18 



mm. long, similarly dissected. 

 Fig. 3. Side view in pharyngeal plane of specimen 24 mm. long. 

 Fig. 4 Portion of specimen 28 mm. long, from Japan, to show the form of 



the bases of the tentacles. 

 Fig. 5. Pharyngeal view of oral portion of specimen in fig. 2, to show the 



relative lengths of ribs, meridional canals, and tentacular sheaths. 

 Fig. 6. Similar view of specimen shown in fig. 3. 



