The genus Grimpoteuthis (Octopoda: Grimpoteuthidae) in the north-east Atlantic, with descriptions of three new species Author Collins, Martin A. text Zoological Journal of the Linnean Society 2003 2003-09-30 139 1 93 127 https://academic.oup.com/zoolinnean/article-lookup/doi/10.1046/j.1096-3642.2003.00074.x journal article 10.1046/j.1096-3642.2003.00074.x 0024-4082 5438036 FAMILY GRIMPOTEUTHIDAE O’SHEA, 1999 New diagnosis Small to large octopods with bell-shaped, semigelatinous body; thick primary web, intermediate (secondary) web absent. White (areolar) spots absent. Fins medium to large, lateral, with distinct lobe near the anterior fin insertion. Eyes lateral. Gills of half-orange form. Optic lobe spherical; optic nerves pass through white body as a single bundle of fibres. Fin-supporting cartilage (shell) U-shaped, outer edges of lateral walls parallel, not tapered to single fine points. Radula present or absent. Posterior salivary glands present or absent. Digestive gland entire or bilobed. Remarks Table 2. Grimpoteuthis umbellata . Details of the type series. Note the second specimen is herein removed from the type series and the larger specimen designated the lectotype. Here and in subsequent tables, all dimensions in mm; depth in m Diagnosis revised to include the genera Grimpoteuthis , Luteuthis and Enigmatiteuthis . There is little molecular ( Piertney et al ., 2003 ) or morphological (see below) evidence to support the separation of the family Luteuthidae .