. Report of the Canadian Arctic Expedition 1913-18. Scientific expeditions. Marine Copepoda 39 k spinulose anal valve as figured by Sars. In the first leg B2 has an ental spine set upon a prominent rounded boss and an equal ectal spine on the anterior surface (Fig. 59).. Fig. 59. Tachidius brevicornis. First leg, anterior surface. 31. Danielssenia fusiformis (Brady). I have identified a single individual of this species from Station 25 b, c, taken at the surface close to ice, north of Cooper island, Alaska, August 27 and 28, 1913.^ The length was about 0-85 mm. As a Danielssenia, its distingui
. Report of the Canadian Arctic Expedition 1913-18. Scientific expeditions. Marine Copepoda 39 k spinulose anal valve as figured by Sars. In the first leg B2 has an ental spine set upon a prominent rounded boss and an equal ectal spine on the anterior surface (Fig. 59).. Fig. 59. Tachidius brevicornis. First leg, anterior surface. 31. Danielssenia fusiformis (Brady). I have identified a single individual of this species from Station 25 b, c, taken at the surface close to ice, north of Cooper island, Alaska, August 27 and 28, 1913.^ The length was about 0-85 mm. As a Danielssenia, its distinguishing feature is the 5-jointed antenna, but in the specimen this is not so decisive as could be desired. The terminal part of the antenna seems at a certain focus to consist of two joints. The antpnnse carry a number of conspicuous thorny bristles, three of which are especially prominent upon the basal half of the terminal portion and one of them is inserted at the level where the articulation should occur. This bristle was lost on one antenna and its sharply defined broad base of insertion simulated an interarticular junction. The basal seta of the posterior maxilliped was damaged accidentally in the manipulation. The fifth foot accords with the figure by Sars. Neither Brady nor Sars seems to be entirely satisfied as to the distinct- ness of D. typica and D. fusiformis, and the differential characters advanced by Brady are not those upon which Sars relies. 32. Danielssenia stefanssoni, n. sp. Station 41n. See under Dactylopusia. Station 41s. See Table VI. Station 42p. Dolphin and Union strait, surface-tow, with net number 3, 10 minutes, Bernard harbour (outer harbour), water depth three fathoms, September 30, 1915. Table XIX (Sta. 42p). Pseudocalanus elongatus 12 (young and adult). Ewytemora herdmani 3 (males). Oithona similis 4. Harpacticus uniremis 11 (males and females). Idyaa furcata 2 (females). Danielssenia stefanssoni 5 (females). Length of female, 1-226 mm. Rostrum pro
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