. Fig. 100. Oradarca impnssicauda, a. I'leon segments 1-3. /;, c. Dorsal and lateral views of telson. and a notch above it. Telson triangular, laterally produced at base into a rounded lobe, apex rounded, feebly notched, dorsal surface with two shallow impressions basally, and a deeper concavity distally. Epistome and upper lip gibbous, subcarinate medially. Gnathopods i and 2 as in tridentata. Oradarea edentata, (Figs. 96 d, 101). ? Chevreux, 1913, p. 143 (part, Leptumphopus novae-zealandiae, mm Tlioms.). Occurrence: St. 173. South Slictlands. Many inch ovig. 77 up to 6 mm. Descri
. Fig. 100. Oradarca impnssicauda, a. I'leon segments 1-3. /;, c. Dorsal and lateral views of telson. and a notch above it. Telson triangular, laterally produced at base into a rounded lobe, apex rounded, feebly notched, dorsal surface with two shallow impressions basally, and a deeper concavity distally. Epistome and upper lip gibbous, subcarinate medially. Gnathopods i and 2 as in tridentata. Oradarea edentata, (Figs. 96 d, 101). ? Chevreux, 1913, p. 143 (part, Leptumphopus novae-zealandiae, mm Tlioms.). Occurrence: St. 173. South Slictlands. Many inch ovig. 77 up to 6 mm. Description. Integument as in tridentata, but with the major sculpturing not forming such prominent transverse lines on the pleon segments as in the preceding species. Post-antennal angle of head quadrate, slightly produced forwards. Eyes broadly oval, reddish. Peraeon and pleon dorsally rounded, without any teeth or carination. Side-plate 1 scarcely widened distally. Lower margins of side-plates very obscurely serru- late. Postero-inferior angle of pleon segment 2 quadrate, with a very minute tooth, of seg- ment 3 rounded with a small tooth or notch at the junction of lower and hind margins. Telson oblong, narrowing distally, apex- truncate, with or without obscure crenula- tions. It is narrower than in bidenlata, h- l'l(:'>n segment 3. c. Telson. and without the distinct triangular apex of tridentata. Epistome and upper lip much less gibbous than in the other species. Antenna 1 with i-jointed accessory flagellum.
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
