460 
THE CORAL TRIANGLE: HEARST BIODIVERSITY EXPEDITION 
Figures 18-21. Digital photographs of dorsal habitus. Fig. 18. Polyderis impressipennis Motschulsky (CASENT 
8144352). Fig. 19. Sinechostictus (Pseudolimnaeum) cf pendleburyi Andrewes (CASENT8144025). Fig. 20. Metabacetus 
cf. arrowi Straneo (CASENT8144007). Fig. 21. Cosmodiscus cf. brunneus Darlington (CASENT8144414). 
