. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. CIRRIPEDIA AND COPEPODA The abdomen (fig. 3, Abd.) has 5 segments and a pair of abdominal appendages. 1st abdominal segment has in a few cases a small bud (the vulva?) at the lower hind corner. The segments of the abdomen are very short; 4th segment is somewhat triangular, much protruding ventrally, and 5th segment fixed near. Fig. 3. Ascothorax ophioctenis. ?. Abd. = abdomen; A. = antenna 1; C. org. = central organ; L = Labium; Md. = man- dible; Mx 1—2. = maxilla 1- 2; O. org., Oral org.
. The Danish Ingolf-expedition. Marine animals -- Arctic regions; Scientific expeditions; Arctic regions. CIRRIPEDIA AND COPEPODA The abdomen (fig. 3, Abd.) has 5 segments and a pair of abdominal appendages. 1st abdominal segment has in a few cases a small bud (the vulva?) at the lower hind corner. The segments of the abdomen are very short; 4th segment is somewhat triangular, much protruding ventrally, and 5th segment fixed near. Fig. 3. Ascothorax ophioctenis. ?. Abd. = abdomen; A. = antenna 1; C. org. = central organ; L = Labium; Md. = man- dible; Mx 1—2. = maxilla 1- 2; O. org., Oral org. = oral organs; 0. org. seel. = diagrammatic transversal section of the oral organs; P. 1—6. = legs of 1st—6th pair. The figures 011 the abdomen indicate the number of the segments. (All the appen- dages are from specimens from st. no, except the antenna 1 (st. 105)). the fore end of 4th segment, dorsally of 3rd segment; thus 5th segment with the abdominal appendages lies along the dorsal side of the anterior segments. The two abdominal appendages are broad, triangular, with thick but soft spines along the original ventral margin. 5th segment has not the pair of heavy spines present in Synagoga (Norman 1913, pi. 33 fig. 2, pi. 35 fig. 7; Okada 1926, fig. 1). Description of $ (figs. 4—5). In four cases (•Tngolf" st. 105. st. no (2 spec), st. 139) a little specimen was found lying outside the large $ (fig. 1,3 <$)) the length of the shell is abt. 1 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 Danish Ingolf-Expedition (1895-1896); Københavns universitet. Zoologisk museum. Copenhagen H. Hagerup
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Keywords: ., bookcentury1800, bookdecade1890, booksu, booksubjectarcticregions
