. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. Fig. I. Sketches of the shells of Ianthina ianthina (L.) (a, b, c) and of /. globosa Swainson (d) to show characteristic range of form, (a) I. ianthina. The typical communis-iorm (Winckworth Collection, Madras), (b) I. ianthina. The planispirata- form, view from above and in side view, (c) I. ianthina. View of the balteata-form, showing the periphery and strong labial sinus characteristic of the species (shell from WS 1057). (d) I. globosa. Three views of shells from the Winckworth Collection (B
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. Fig. I. Sketches of the shells of Ianthina ianthina (L.) (a, b, c) and of /. globosa Swainson (d) to show characteristic range of form, (a) I. ianthina. The typical communis-iorm (Winckworth Collection, Madras), (b) I. ianthina. The planispirata- form, view from above and in side view, (c) I. ianthina. View of the balteata-form, showing the periphery and strong labial sinus characteristic of the species (shell from WS 1057). (d) I. globosa. Three views of shells from the Winckworth Collection (Brit. Mus.). Order MESOGASTROPODA Unidentified prosobranch larval shells The three sets of inshore stations, WS 980 and WS 981, off Walfisch Bay, WS 988 and WS 989 off Sylvia Hill, and WS 1002 at the mouth of the Orange River, each yielded shells of a gastropod veliger larva and of lamellibranch larvae. The gastropods at all three stations were of the same species, which —owing to the retraction or loss of the velar lobes and damage to the shell after preservation—were. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Institute of Oceanographic Sciences (Great Britain); National Institute of Oceanography of Great Britain; Great Britain. Colonial Office. Discovery Committee. London ; New York : Cambridge University Press
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