FIGURE 18 A, C in A revision of the shovel-nosed lobsters of the genus Thenus (Crustacea: Decapoda: Scyllaridae), with descriptions of three new species

FIGURE 18 A, C, Thenus orientalis (off Singapore); B, D, T. indicus (off Singapore); E. T. parindicus (off Darwin, Australia) F, G, H, T. unimaculatus (off Phuket, Thailand), note the variation in the extent of the purple blotch on the propodus of the pereiopods, always represented by at least a streak on P1 as on H; I, T. australiensis (off Darwin, Australia). J, live specimen presumed to be T. orientalis from Bali, Indonesia; Photographs reproduced with kind permission of Tin- Yam Chan (A, B, C, D) and Roger Steene (J).