Pleurotomella esilda Dall 1908

Pleurotomella esilda Dall, 1908 (family and genus assignment uncertain) Fig. 35F Pleurotomella (Pleurotomella) esilda Dall, 1908: 282. Leucosyrinx esilda – McLean 1971b: sp. 1668, with query. Type material Holotype PACIFIC OCEAN • Gulf of Panama; depth 730 ftm (= 1335 m); USNM 123126. Remarks The species is based on a single, heavily broken, dead-collected shell (22.8 mm in shell length). It differs significantly from species of Leucosyrinx as defined here, exhibiting a very short siphonal canal, strong and long axial ribs extending to the poorly defined subsutural ramp, and an anal sinus situated close to the shoulder. On these grounds, we exclude the species from Leucosyrinx, but we are currently unable to determine its generic position. Distribution Type locality.