Svenska vetenskapsakademien handlingar . behind themiddle of the right side; the lips are not pro-jecting; the jaws are furnished with a denticu-lated process, and the teeth of the radula areserrated (lam. med. with 9 denticles on eacli side).The liver, furthermore, is enclosed in the papil-lae. These differences were observed by Bergh, of the body of Goniieolis lobata (ef. Plate I but he supposes that Särs examination may have £ti^tis^eyTl!5r. ?? been imperfect and that it may be possible toidentify the species. It is consequently evident that Berghs species is a different one from M. Särs,an
Svenska vetenskapsakademien handlingar . behind themiddle of the right side; the lips are not pro-jecting; the jaws are furnished with a denticu-lated process, and the teeth of the radula areserrated (lam. med. with 9 denticles on eacli side).The liver, furthermore, is enclosed in the papil-lae. These differences were observed by Bergh, of the body of Goniieolis lobata (ef. Plate I but he supposes that Särs examination may have £ti^tis^eyTl!5r. ?? been imperfect and that it may be possible toidentify the species. It is consequently evident that Berghs species is a different one from M. Särs,and the differences are so important, that the species must also be allotted to dif-ferent genera. GoniseoHs in Bergh 1886 and 1899 shows such points of agreementwith Chlamylla Bergh 1886, that the two genera have here been united under thelast name. GoniaeoHs of M. Särs 1861, on the contrary, owing to the structure of the liverand the papillse, must be placed in a separate family, Goniaeolididse, belonging tothe group Fig. 1. Transversal sectiou tlirougli a part Archidoris nohilis Loven in manuscript. Pl. I figs. 14—18. Body oblong-ovate, convex and rough with close-set small conical papillse. Themiddle of the back furnished with 3 longitudinal series of larger tubercles, made up 100 NILS ODHNER, NORTHERN AND ARCTIC INVERTEBRATES. III. OPISTHOBRANCHIA ETC. of smaller ones. Gills 8, tripinnate, in a circle before the anus, retractile. Ehinophorialapertures slightly granulate on the margin. Oral tentacles tuberculiform, shortly acu-minate, on the sides of the head. Foot rounded in front, with distinct tränsversalfurrow but without median ; the posterior end scarcely overtopping the cyhndrical, lengthened, unarmed. Colour rosy white, yellowish towards themargin; the gills lemon-coloured. L. 50 mm. Br. 25 mm. Radula go ? O • go ; the teeth uniform, compressed from the sides, with producedarched spine, and inserted in the basal membrane wi
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