FIGURE 1 in The position of the Hymenosomatidae MacLeay, 1838, within the Brachyura (Crustacea, Decapoda)

FIGURE 1. Trigonoplax unguiformis (De Haan, 1839). A, male 6.1 x 7.3 mm, Western Australia, 19 m, coral, sponge and some sea grass, A.B. Williams det. 1981 (USNM 184973) (all fragile legs missing): male reproductive system visible through decalcified, transparent carapace, showing the testis and vas deferens, with ejaculatory duct connecting directly to the sternum, distant from P5 coxa; B, female 10.4 x 14.5 mm,?Japan (USNM 13714): wide sternum/pterygostome junction, large brood cavity, with anteriorly displaced vulvae. d, vas deferens; j, sternum/pterygostome junction; m, Milne Edwards's openings separated from chelipeds and filled by flabelliform Mxp3 coxae; t, testis; v, vulva.