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A history of the British sessile-eyed Crustacea . MABLKTIIORPE. IDOTEA PARALLELA. ISOPODA. NORMALIA. 391 /: IDOTEA PARALLELA. Specific character. Narrow, subcylindric, ?with the sides of the pereionparallel; eyes placed at the base of slightly elevated anterior lateral anglesof the cephalon ; outer antennte not one-fourth of the length of the animal,with a very short two or three-jointed flagellum. Pleon rounded at the ex-tremity, which is subobliquely truncate, with the margin elevated. Firstpair of legs larger than the succeeding. Length, one-fourth to one-half of an inch. Idotea
A history of the British sessile-eyed Crustacea . MABLKTIIORPE. IDOTEA PARALLELA. ISOPODA. NORMALIA. 391 /: IDOTEA PARALLELA. Specific character. Narrow, subcylindric, ?with the sides of the pereionparallel; eyes placed at the base of slightly elevated anterior lateral anglesof the cephalon ; outer antennte not one-fourth of the length of the animal,with a very short two or three-jointed flagellum. Pleon rounded at the ex-tremity, which is subobliquely truncate, with the margin elevated. Firstpair of legs larger than the succeeding. Length, one-fourth to one-half of an inch. Idotea chelijpes. Costa, Faun. d. Regno d. Napoli. Crust, pi. 11, f. 2. Hope,Cat. Crust, p. 26 (but not of Fabricius, Mant. Ins. i,241. Ent. Syst. ii. 506, nor of Latr. Hist. N. Ins. etCrust, vi. 372). This new British species will not enter into any of Edwards divisions of the genus, founded on thestructure of the basal segments of the tail, as our speciespossesses three distinct although very short joints,followed by a fourth joint, only indicated at the sides, X, r v-u<y\^^^ I 392 IDOTEIDiE. being
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Keywords: ., bookauthor, bookcentury1800, bookdecade1860, booksubjectcrustacea