A history of the British sessile-eyed Crustacea . ere theyprotect their small colony by retiring deeply within thefissures of the slaty rocks of the coast, where they collecttogether a mass of material of a leathery consistence,behind or within which they take shelter. When dis-turbed they escape, and will spring to a considerabledistance. This is probably done by bringing the headand tail together and suddenly straightening themselves. Among the several specimens sent to us by Mr. Ro-bertson, was one of a very slender form; so peculiarwas it that we figured it under the impression that it was
A history of the British sessile-eyed Crustacea . ere theyprotect their small colony by retiring deeply within thefissures of the slaty rocks of the coast, where they collecttogether a mass of material of a leathery consistence,behind or within which they take shelter. When dis-turbed they escape, and will spring to a considerabledistance. This is probably done by bringing the headand tail together and suddenly straightening themselves. Among the several specimens sent to us by Mr. Ro-bertson, was one of a very slender form; so peculiarwas it that we figured it under the impression that it wasof a separate species from the present, and named it inthe dredging list as T. hirticaudatus.^ But among thehundreds that we have had the opportunity of examiningfrom several localities, we could identify many thatwere intermediate between the two extremes, and con-sider it not improbable that the slender form is but aspecimen that had recently cast its skin. * Brit. Assoc. Rep. 1860, p. 225. TANAIS DULONGIT. 129 TAN A ID TANAIS DULONGIT. Specific character. Body smootli. Pleon destitute of fascicles of subequal in length, the upper i^air much thicker than the pair of gnathopoda very robust ; second pair slender, and rather longerthan the pereiopoda. Third pair of pereiopoda with an appendage at thebase within: tail short, obtuse, terminal appendages short, three-jointed. Length not quite a 5 of an inch. Gammariis Didongii(?)Tanais Daloncjii (?) Andotjin, Explicat. PI. Egypte, t. xi. fig. 1.*Milne Edwards, Crust, iii. p. 142. W. Thomp-son, in Ann. Nat. Hist. xx. p. 245. White,Cat. Brit. Crust, p. 68 ? Pop. Hist. , p. 227 ?AnisocJicirus Ddongd (?) Westwood, Annales Sei. Nat. xxvii. p. 330, The type of this species, originally figured by Savigny,was a native of the coast of Egypt; it is, therefore,with some doubt that we affirm its identity with speci- * Our outline figures P and v are copied from Savignys
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Keywords: ., bookauthor, bookcentury1800, bookdecade1860, booksubjectcrustacea
