Diam. 



PLATE IT. 



Rhodalia miranda, n. sp. (p. 302). 



Fig. 6. Basal view of the conn (from below). The tentacles are detached and 

 the. siphons highly contracted. The whole convex basal surface of 

 the corm is covered by radish-shaped cormidia, each of which is usually 

 composed of a siphon (s) and one or two gonodendra (g). The necto- 

 phores (n) form a peripheral corona, v, Velum ; w, opening of the 

 nectosac (compare p. 290), . . . . : . x 2 



Fig. 7. A single branch of a clustered gonodendron, with numerous pear- 

 shaped gynophores and single, scattered, spindle-shaped andro- 

 phores, . . . . . . . x 50 



Fig. 8. A single branch of a gonodendron, with two monovonian and two 



polyovonian gynophores, . . . . . x 50 



Fig. 9. Longitudinal section through a polyovonian gynophore. c, Gastral 

 cavity ; d, entoderm ; e, exoderm ; o, ovules ; o 1 , nucleolus (germinal 

 spot); o 1 , nucleus (germinal vesicle); o 3 , protoplasm of the egg-cell 

 (germinal yolk), . . . . . . x 150 



Fig. 10. Transverse section through a polyovonian gynophore. Characters as 



in fig. 9, . . . . . . . x 150 



Fig. 11. A pyriform polyovonian gynophore, from the outside of which arise 



two secondary monovonian gynophores, . . . x 50 



Fig. 12. An ovate monovonian gynophore, the umbrella of which exhibits eight 



distinct radial canals (instead of the usual four), . . x 50 



