. Studies on marine ostracods : pt. 1, Cypridinids, halocyprids and polycopids. ove the outline is elliptical, with broad, slightly roundedor subtruncate extremities; lateral margins gently and evenly arcuate, greatest width situatedin the middle (G. S. Brady, p. 181, pi. XXI, fig. 21). The surface of the shellis almost quite smooth, with only small, rounded, shallow foveolae, chiefly situated on theanterior part of the shell. There are scarcely any bristles. The wreath of hair round the posteriorpart of the shell is dense; these hairs are comparatively long and coarse. Seen from within(fig. 2
. Studies on marine ostracods : pt. 1, Cypridinids, halocyprids and polycopids. ove the outline is elliptical, with broad, slightly roundedor subtruncate extremities; lateral margins gently and evenly arcuate, greatest width situatedin the middle (G. S. Brady, p. 181, pi. XXI, fig. 21). The surface of the shellis almost quite smooth, with only small, rounded, shallow foveolae, chiefly situated on theanterior part of the shell. There are scarcely any bristles. The wreath of hair round the posteriorpart of the shell is dense; these hairs are comparatively long and coarse. Seen from within(fig. 2): Right valve: The ventral hp of the incisur forms a heel-shaped part, whichprojects rather decidedly and is cut off obliquely dorsally. The antero-ventral part of therostrum also projects like a heel. Somewhat inside and running about parallel to the anteriorpart of the dorsal and the dorsal part of the anterior margin of the shell there is a denseseries of very small, rounded and strongly refractive formations resembling a string of pearls. studies on marine Ostracods 543. Fig. CVI. — Cyclasierope fascigcra G. S. BitAov, o. - - I. She I seen from liieside; 13 X- -. Anterior part of the ri^lit valve seen from inside; 52 X- 3. Tiio fixing spots of the sliell muscle, riirht valve seen from inside; iH > . i. Left first antenna seen from insidi; all Ihr IMi^r liristlcs are broken; .jI X. 544 TAGE SKOGSBERG Medial bristles: These are all simple and bare. Somewhat inside and about parallel to the above-mentioned string of pearls a distinct and dense row of fine, comparatively short bristles runsalong the anterior part of the dorsal margin of the shell. Somewhat inside and about parallelto this row of bristles another row of bristles runs, continuing down towards the point of therostrum along the posterior edge of the rostrum —this edge is not distinctly marked, however;this row of bristles is partly rather sparse and also less distinct ventrally; its dorsal bristles arerathe
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectostraco, bookyear1920
