Macrothrix rosea. 



Fig. 



1. Antennule. 



2. Post-abdomen of female. 



3. Post-abdomen of male. 



4. Drepanothrix dentata. Post-abdomen of male. 



Macrothrix tenuicornis. 



5. Head. 



6. Post-abdomen. 



7. First foot. 



8. Antennule of female. 



Macrothrix laticornis. 



9. Head. 



10. Post-abdomen. 



11. First foot. 



12. Portion of dorsal ridge of shell. 



