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Philinopsis pilsbryi
(Eliot, 1900)
 
Philinopsis pilsbryi
Maximum size:  about 76 mm (Hoover, 2006).

Identification:  This is a cream animal broadly reticulated in black. In contrast to Philinopsis sp. #1, the black lines don't extend onto the foot.

Natural history:  Philinopsis pilsbryi is rarely seen on Maui where it has been found only in Halimeda kanaloana beds at depths of  9-15 m (30-49 ft). However, it is locally common on Oahu at depths of 1-3 m (3-10 ft) in Kaneohe Bay and other highly protected sites. It has also been found at Hale'iwa trench to 24 m (80 ft) and Scott Johnson  reports it from more exposed sites.

Distribution:  Big Island, Maui, Oahu and French Frigate Shoals: widely distributed in the Indo-Pacific.

Taxonomic notes:  It is referred to as "Pilsbry's headshield slug" in Hoover, 1998 & 2006 although the photo is of Philinopsis sp. #1 in the 1998 edition. It was first reported from Hawaii in Pease, 1860 (as Philinopsis nigra).

Photo:  CP: 27 mm: 2006 CREEF expedition French Frigate Shoals; Oct. 24, 2006.

Observations and comments:

Note 1:  ( )
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