Indian Medical Research Memoirs Supplementary Series to the Indian Journal of Medical Research June 1932

In the Scorpionida the abdomen is very long distinctly segmented and differentiated into two portions (a) the mesosoma consisting of seven segments of the same diameter as the prosoma bearing the respiratory appendages (b) the metasoma a much narrower part consisting of five segments and a curved spine like a tail at the apex of which is the opening of a poison gland. [...] Tail.—Thick ; posteriorly incrassate ; the fourth and fifth segments subequal n width and wider than the rest ; the first and second segments with ten granular keels and granular intercarinal spaces ; the third partially pitted the fourth and fifth pitted ; the fifth with inferior lateral keel but weak in front ; lateral surface pitted ; inferior surface granular in the intercarinal spaces ; ves [...] Tail.—Strong from four and a half to five and a half times as long as the carapace ; the first second and third segments convex at the sides the first wider than long ; median lateral keel complete on the first second and third segments represented by a few granules on the fourth ; all the keels granular the inferior medians on the first and second segments almost smooth the superior sub-d [...] It is described as ' having the tail not more than five times as long as the carapace ; with the first second and third segments convex at the sides the first segment by one-half wider than long the fourth only by half longer than wide ; the hand narrower than the brachium with the underhand scarcely half the length of the movable digit and the humerus shorter than the carapace. [...] The capsule only reaches a little beyond midbody and protects the anterior end of the embryo the posterior end being embedded in a gelatinous mass along the dorsal part of the abdomen of the mother.