. Botany of the Faeröes, based upon Danish investigations. Botany -- Faroe islands. 587. Fig. 143. Ceratium longipes, var. oentricosa Ostf., n. var. ('â "". ,;. C. longipes, var. ventricosa n. var. In a few samples from the Færoes (August 1900) and also in others from the North Atlantic Ocean, I saw a Ceratium which comes near to C. longipes, but is easily distinguished from it by its much larger >trunk«. As I have only seen a few specimens, I am not prepared to define ils relation to the above- mentioned species; it appears to be analogous to C. compressum Gran, which comes ne
. Botany of the Faeröes, based upon Danish investigations. Botany -- Faroe islands. 587. Fig. 143. Ceratium longipes, var. oentricosa Ostf., n. var. ('â "". ,;. C. longipes, var. ventricosa n. var. In a few samples from the Færoes (August 1900) and also in others from the North Atlantic Ocean, I saw a Ceratium which comes near to C. longipes, but is easily distinguished from it by its much larger >trunk«. As I have only seen a few specimens, I am not prepared to define ils relation to the above- mentioned species; it appears to be analogous to C. compressum Gran, which comes near to C. horridum. Note 1. C. arcticum Ehbg., which (Iran il. c. p. fil) found in the sea between the Færoes and the Shetlands, has not heen met with in the samples from the Færoes, although it may certainly occur there. C. inaequale Gourret (C. reticulatum Ostf., Iagttagelser 1899, p. 58, vix Pouchet) has been found in the North Atlantic Ocean, SW. of the Færoes and may also occasionally extend to them. Note 2. Besides the above-mentioned two sections of the subgenus Euceratium various other sections may be founded for the reception of the numerous tropical species. Subgen. 2, BICERATIUM Vanhoffen. 84. C. lineatum (Ehbg.) Cleve, Kgl. Sv. Vel. Akad. Handl., Bd. 32, Nr. 3, 1899, p. 36; Peridinium lineatum Ehbg.; C. farca v. baltica Mobius; Biceratium debile Vanhoffen, Gronland Expedi- tion d. Gesellsch. f. Erdkunde zu Ber- lin; PI. 5, fig. 16. This little species, the small si/c of which enables it to escape through the meshes of the gauze, has only been found twice in February along the Færoes; the speci- mens examined have short horns. 85. C. furca (Ehbg.) Clap. & Lachm. Occurs rather sparingly around the Færoes, mostly together with C. tripos and the following species; found during most of the months. [See tables.] Subgen. 3, AMPHICERATIUM Vanhoffen. 86. C. fusus (Ehbg.) Dujard. Hather common in the plankton and found all. Please note that these imag
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