. Cumacea (Sympoda). Cumacea. Fig. 23. I. zimmeri Stebbing, maxilliped 3. Fig. 24. I. zimmeri Stebbiug, uropod. rounded_clistal process simulating and perhaps representing a short 3^ joint. Peduncle of uropods subequal to the rami; endopod with V^ joint much stouter than 2^^, about half as long, fringed on medial margin with 10 pectinate spines, the apical much the longest, 2"^* joint fringed with a dozen spines, the lowest the largest, follow- ed by an oblique series of lOspinules extending to the acute apex which carries an inward pointing spine. L. 9 mm. A specimen without pleopods, L.
. Cumacea (Sympoda). Cumacea. Fig. 23. I. zimmeri Stebbing, maxilliped 3. Fig. 24. I. zimmeri Stebbiug, uropod. rounded_clistal process simulating and perhaps representing a short 3^ joint. Peduncle of uropods subequal to the rami; endopod with V^ joint much stouter than 2^^, about half as long, fringed on medial margin with 10 pectinate spines, the apical much the longest, 2"^* joint fringed with a dozen spines, the lowest the largest, follow- ed by an oblique series of lOspinules extending to the acute apex which carries an inward pointing spine. L. 9 mm. A specimen without pleopods, L. 5 mm, agrees as to the uropods with I. rohusta, H. J. Hansen (nr. 7). South Africa, lat. 320 53' 30" S., long. 28" 11' 00" E.; depth 75 m. 3. I. brevipes 1895 , in: Ergeb. Plankton- Exp., G. c. p. 54 t. 6 f. 5, 5a—h | 1908 I. africana, Zimmer in: Ergeb. Tiefsee-Exp., i\ 8 p. 163 t. 37 f. 17—33 | 1910 I. brevipes, T. Stebbing in: Ann. S. Afr. Mus., Pseudorostral lobes rather short, horizontal, acute at apex, then truncate, then emarginate; antero-lateral corners acutely produced in 9. Carapace very slender, nearly three times as long as high, lower margin for a short space anteriorly serrate, otherwise quite smooth, with no distinct median carina, which is confined to the pleon segments, but sometimes having a longitudinal medio-dorsal row of denticles beginning behind the eyelobe and extending half the length of the carapace (Zimmer); the pedigerous segments quite smooth. Eyelobe rounded, eye darkly pigmented, corneal lenses indistinct. Antenna 1. 3^ joint longer than '2''^. Antenna 2 in 9 1-jointed, with 3 or 4 plumose setae, in 6 reaching to end of pleon. Maxilliped 3, 2''^ joint unusually long, but distal process moderately produced, rest of limb little more than one-third as long as 2"^ joint, 4*^1 joint moderately produced, 5*^11 not specially widened. Peraeopod 1, 2«'i joint considerably longer than rest
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