APHRODITA. 178 
by name with those of more scientific claims. I doubt not that in my over- 
sight of certain features whereon the observations of others have specially 
rested, I may have mistaken the names previously bestowed on them, 
and that in my desire for abbreviation, I may not have entered on suffi- 
cient detail, errors which may be subsequently rectified on opportunity. 
PLate XXIV. Apuropira. 
Fic. 1. Aphrodita cirrosa, back. 
2. The same, belly. 
3. Aphrodita squamata, large specimen. 
4. Aphrodita squamata, ordinary specimen from Shetland. 
5. Anterior portion of an ordinary specimen, slightly enlarged. 
6. Anterior portion of fig. 4, upper surface, shewing the tentacula, eyes 
pencils, &e., enlarged. 
7. Posterior extremity of the same, under surface, enlarged. 
8. Ordinary specimen, wanting one or two pair of scales. 
9. Ova. 
10. Proboscis, enlarged. 
11. Aphrodita varians. 
12. Another specimen. 
13. Aphrodita velox, enlarged. 
14. Aphrodita arcta. 
15. Aphrodita aculeata, back. 
16. The same, belly. 
