. Cumacea (Sympoda). Cumacea. Fig. 15. C. cingulata (5) Caiman. pleon segments; a median keel extends from the 5^^ pedigerous to the'jS*^ pleon segment, but is feeble at beginning and end of the series. Eyelobe with 11 corneal lenses on the distal end. Antenna 1 with 3^ joint longer than 2"*^, accessory flagellum minute but distinct. Maxilliped 3, 2^^ joint with distal process reaching nearly as far as that of the 4**^ joint, its length without this long process little more than the rest of limb. Peraeopod 1, 2^"^ joint feebly produced at apex, length less than rest of limb, 5^^ and
. Cumacea (Sympoda). Cumacea. Fig. 15. C. cingulata (5) Caiman. pleon segments; a median keel extends from the 5^^ pedigerous to the'jS*^ pleon segment, but is feeble at beginning and end of the series. Eyelobe with 11 corneal lenses on the distal end. Antenna 1 with 3^ joint longer than 2"*^, accessory flagellum minute but distinct. Maxilliped 3, 2^^ joint with distal process reaching nearly as far as that of the 4**^ joint, its length without this long process little more than the rest of limb. Peraeopod 1, 2^"^ joint feebly produced at apex, length less than rest of limb, 5^^ and 7^^ joints equal, each a little shorter than 6*^. Peduncle of uropods longer than the exopod but slightly shorter than the endopod, which has 3 small spines about tbe middle of the medial margin, the apex bare, acute. L. 4'2 mm. d. Carapace with only a faint trace of the encircling collar, and without the hinder pair of dorsal carinae; infero-laterally a faint horizontal ridge meets the collar anteriorly. Dorso-lateral keels on last 2 pedigerous segments, but the stout pleon segments have no distinct keels. Terminal joints of peraeopod 1 longer and more slender than in 9. Gulf of Siam; depth 9—-18 mm. 19. C. thomsoni Calm. 1907 , Caiman in: Tr. zool. Soc. Londou, r. I81 p. 7, 14 t. 5 f. 12—16. Near to C. levis (nr. 8). Pseudorostral lobes short, with eyelobe reaching to or beyond their apices; antero-lateral tooth minute. Carapace pitted, rugose, with dorsal carina flattened or faintly doubled to the rear; on either side behind the middle a short groove is limited by a faint ridge running obliquely downwards; a slight short ridge runs backward from the antero-lateral corners. Pedigerous segment 1 exposed at the sides in Q, not in (S, 2"'^ with dorsal carina, 3^ to 5*^ with lateral carinae. Pleon segments with dorsal and lateral carinae and articular processes in 9, the lateral carinae wanting in 6. Eyelobe apparently short, occupied by several corneal lenses. Perae
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherberli, bookyear1913
