| Amphiscolops fuligineus Peebles, 1913 | Feb, Mar 1913 |  | on rocks and under old boats; |  | 
| Aphanostoma pulchella Pereyaslawzewa, 1892 | Feb, Mar 1913 | 1-2 m | pelagic | Pelagic, obtained ner the shore.  Never seen crawling on seaweed.  Occurs in intervals in great numbers, and then disappears to return again after a brief period. | 
| Aphanostoma pulchella Pereyaslawzewa, 1892 | Aug 1913 |  |  | Occurs in intervals in great numbers, and then disappears to return again after a brief period. | 
| Monochoerus lineatus Peebles, 1915 | Feb, Mar, Aug 1913 | pelagic |  | abundant in Naples.  Free swimming among seaweeds near shore. | 
| Amphiscolops fuligineus Peebles, 1913 | Aug 1913 |  |  | "...this sturdy little robber is easily detected when swimming in clear water."  Found in seaweeds. | 
| Plagiostomum whitmani Graff, 1911 | Jul 29, 1931 | 2-6 m |  |  | 
| Monocelis lineata (Müller, 1773) | 1913 or earlier |  |  |  | 
| Monocelis longiceps (Duges, 1830) | 1913 or earlier |  |  |  | 
| Anoplodium parasita Schneider, 1858 | 1906 or earlier |  |  | from Holothuria tubulosa (Holothuriidae) |