Figs 97–102. Proboscis and hooks of Acanthogyrus (Acanthosentis) kashmirensis (figs 97–99), Acanthogyrus (Acanthosentis) fusiformis (fig. 100), and Pallisentis (Brevitritospinus) indica (figs 101–102)(Quadrigyridae):97—proboscisof A. kashmirensis showing hook arrangement and sensory pore at its base; 98 — profile of anterior and middle hooks showing their emaciated appearance; 99 — the appearance of the hooks in fig. 98 is explained by their hollow core; see this figure of a Gallium-cut cross section of an anterior hook; 100 — the unusual shape of the proboscis of A. fusiformis with the smaller hooks on the anterior constricted part of the proboscis; 101 — the proboscis of P. indica showing proboscis bumps and sensory pore at its posterior end; 102 — a middle hook showing its angle and relative dimensions.