A history of the British sessile-eyed Crustacea . and eight-jointed, the three terminal joints forming the flagellum,which is tipped by a small short articulus. The legshave the lower margin of the intermediate joints armedwith bristles; they are terminated by a very minutehook or finger, which is slightly bifid at its tip. The two anterior segments of the tail are not producedinto exserted lateral angles, as is the case with the threefollowing. They are, however, narrower than the ter-minal segments of the body. The terminal segment istriangular, with the sides slightly emarginate for theinse
A history of the British sessile-eyed Crustacea . and eight-jointed, the three terminal joints forming the flagellum,which is tipped by a small short articulus. The legshave the lower margin of the intermediate joints armedwith bristles; they are terminated by a very minutehook or finger, which is slightly bifid at its tip. The two anterior segments of the tail are not producedinto exserted lateral angles, as is the case with the threefollowing. They are, however, narrower than the ter-minal segments of the body. The terminal segment istriangular, with the sides slightly emarginate for theinsertion of the caudal appendages, which are elongated,and have the basal portion uncovered; the inner ramusof each is more than half the length of the outer. The species are found in dry moss, at the roots oftrees, and under leaves and stones. They run with greatquickness, and do not hide away from the light. Theydo not attempt to roll themselves up into a ball, butfeign death when alarmed. VOL. II. ® ^ 450 ONISCID^. ISOPODA. NORMAUA. PHILOSCIA MUSCORUM. Specific character. Smooth, shining ; front of the cephalon slightlyarched in the middle. Terminal segment of the pleon broadly triangular,apex acuminated, sides straight. Uiopoda with the outer division falciform ;the inner lobe scarcely more than half the length of the latter. Length, one-fourth to one-third of an inch. Oniscus muscorum. Philoscia muscorum. Oniscus melanocepliala. Zia melavocephala. ScoPOLi, Entom. Carniol. p. 1145. Cutiek, in Journ. dHist. Nat. i. t. 26, f. 6, 7. Coquebert, Illust. Iconog. t. 6, f. , Hist. Crust, et Ins. vii. p. 43. Gen. Crust, et Ins. i. p. 69. Leach, Trans. Linn. Soc. xi. p. 375, Edin. Enc. vii. p. 406. Suppl. Enc. Brit. i. p. 428. Samouelle, Ent. Compend. p. 111. KiNAHAN, Nat. Hist. Rev. v, 4, 1857, p. 280, pi. XX. figs. 1-6; V. 5, 1858, pp. 194, 195, pL xxi. f. 4. White, B. M. Cat. Brit. Crust, p. 72. Pop. Hist. Brit. Crust, p. 235. (Not the P. mu
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Keywords: ., bookauthor, bookcentury1800, bookdecade1860, booksubjectcrustacea
