Pelagic Molluscs 2.0: Dichotomous key: step 104: "103"
WebKey: Step 104. 103. 103a. Constriction present in rostrum. Step 105. 104
Pelagic Molluscs 2.0: Dichotomous key: step 183: "182"
Web182a. The median radula plate is narrow ribbon-shaped, the intermediate plates have one top spine, there are numerous large hooks.
Pelagic Molluscs 2.0: Dichotomous key: step 69: "68"
Web68a. Lateral spines projecting caudally, shell length 7-12 mm. Diacria major. 68b. Lateral spines projecting straight laterally.
Pelagic Molluscs 2.0: Dichotomous key: step 170: "169"
Web169a. The body is very blunt ending, the wings are short, the median radula plate has a central cusp.
Pelagic Molluscs 2.0: Dichotomous key: step 146: "145"
Web145a. Aperture width equal to or larger than half the shell length.
Pelagic Molluscs 2.0: Dichotomous key: step 71: "70"
Web70a. The colour pattern on the ventral side shows two clearly separated colour patches besides the colour along the shell margin, shell length 5-10 mm.
Pelagic Molluscs 2.0: Dichotomous key: step 182: "181"
Web181a. Fins long oar-like, ending in a spatula-like shape [this is a dubious species and when not exactly fitting this character then select the other one].
Pelagic Molluscs 2.0: Dichotomous key: step 165: "164"
Web164a. Three pairs of buccal cones present (Clione). (Clione l.l. elegantissima is not included in this key as too few data are present). Cl.l.elegantissima-
Pelagic Molluscs 2.0: Dichotomous key: step 309: "N-Atlantic/(Sub ...
WebKey: Step 309. N-Atlantic/(Sub)Antarctic. Clio p. pyramidata depth North Atlantic. Clione l. antarctica (Sub)Antarctic
Pelagic Molluscs 2.0: Dichotomous key: step 119: "118"
Web118a. Lateral spines not bent. Diacavolinia bicornis. 118b. Lateral spines bent.
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