Fig. 13

Muusoctopus johnsonianus (Allcock, Strugnell, Ruggiero & Collins, 2006) [26]. Hectocotylus and female reproductive anatomy. a, BIOICE-3524 (early maturing male, mantle length (ML) 49 mm, off Iceland): hectocotylus; b, BIOICE-3168 (early maturing male, ML 47 mm, off Iceland): hectocotylus; c, BIOICE -3520–2 (late maturing female, ML 89 mm, off Iceland): dissected female reproductive tract; d, BIOICE-3521 (late immature female, ML 36 mm, off Iceland): dissected ovary. Scale bars: a, b = 1 mm, c = 5 mm, d = 0.5 mm. Abbreviations: ca, calamus; do, distal oviduct; li, ligula; lv, late vitellogenic oocyte; mv, mid-vitellogenic oocyte; o, ovary; og, oviducal gland; po, proximal oviduct; pr, pre-vitellogenic oocyte