. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Contributions to the Crustacean Fauna of South Africa. 339 Diploexochus mixtus (B-L.). (Fig. 58, a, b.) 1904. Armadillo mixtus. Budde-Lund, Kev. Crust. Isop. Terr., p. 113. Surface minutely granulate. Rugae distinct, though not very obvious medio-dorsally. Anterior margin of segment 1 with 2 low rounded tubercles. Epistome not strongly raised. Peraeon segment 1 with margin thick, reflexed, grooved through- out its length, hind corner unequally cleft, internal tooth rounded. Internal tooth on segment
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Contributions to the Crustacean Fauna of South Africa. 339 Diploexochus mixtus (B-L.). (Fig. 58, a, b.) 1904. Armadillo mixtus. Budde-Lund, Kev. Crust. Isop. Terr., p. 113. Surface minutely granulate. Rugae distinct, though not very obvious medio-dorsally. Anterior margin of segment 1 with 2 low rounded tubercles. Epistome not strongly raised. Peraeon segment 1 with margin thick, reflexed, grooved through- out its length, hind corner unequally cleft, internal tooth rounded. Internal tooth on segment 2 well developed, somewhat Fig. 58.—Diploexochus mixtus (B-L.). a, Telson and uropods ; b, ventral view of epimera 1 and 2, with marginal view of epimeron 1. D. kogmani n. sp. : c, ventral view of epimera 1 and 2, with marginal view of epimeron 1 ; d, 4th and 5th pleon segments, telson, and uropods. Pronotum y1^ (—\). Epimera of segments 5-7 and pleura of pleon segment 3 with distinct ridge on lower surface. Telson a little broader than long, sides incurved, apical margin nearly straight, dorsally with 2 rounded tubercles proximally, followed by a medio-longitudinal rounded ridge. Antenna 2, 4th joint slightly longer than 2nd, 2nd flagellar joint 3-4 times 1st. Uropod, peduncle as broad as long, outer ramus small, extending one-third to apex of peduncle, inner ramus short, extending half-way to apex of telson. 9x4 mm. In alcohol, unicolorous yellow. Localities.—Cape Province : Port Elizabeth (Budde-Lund); Avon- tuur (). If these Avontuur specimens are correctly assigned to Budde-Lund's species, I would consider mixtus more an ally of nigricans than a transition between flavescens and festivus. They have no ridge on the pleura of pleon segment 3, but they are not in very good condition. The outer distal angle of peduncle of uropod is noticeably Please note that these images are extracted from scanned page images that may have been digitally enhan
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