|
|
| Inner tentacles longer than the outer tentacles |  |
|
| Outer tentacles longer than the inner tentacles |  |
|
| All tentacles short |  |
Figure 2. Ilyanthopsis elegans sp. n. Nat. Gr. |
| All tentacles long |
 |
d-f, Nectothela lilae Verrill:" "f, completely contracted as in the free swimming condition (x 2) |