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Show 110 CRUSTACEA. the four posterior appendages nearly equal. in wet places( 1 ). 0Nxsous, Lin. They are only found The true Onisci have also eight joints in their lateral antenn~, but their base is covered, and the two external appendages of the extremity of the tail are much larger than the others. These ani. mals and those of the two following subgenera are vulgarly called Clou;·a-porte, and by syncope Cloporte, Porceleta de 8aint-Antoine(2). They inhabit retired and obscure places, cellars, fissures in walls, old buildings, under stones, &c., &c. They feed on decaying vege. table and animal matters, and seldom issue from their retreat, ex. cept in rainy weather. They move but slowly, unless they are alarmed. The ova are inclosed in a pectoral pouch. The young, at birth, have one thoracic segment less than the adult, and conse. quently have but twelve feet. They are no longer employed in medicine(3). PoROELLio, Lat. The Porcelliones differ from the Onisci in the number of joints that compose the lateral antennre, which is only seven. In their other characters they are alike( 4 ). There, as in ARMADILLo, Lat. The posterior appendages of the body do not project; the last segment is triangular; a little lamina resembling a reversed trian· gle, or widest and truncated at the end, formed by the last part of the lateral appendages, fills, on each side, the space between that segment and the preceding one. The lateral antennre have but (1) Oniscus sylvutris, Fab.; Oniscus muacorum, Cuv., Journ. d'Hist. Nat. n, xxvi, 6, 8; Coqueb., Ill. Icon. Insect., Dec. I, vi, 12. (2) These "Pigs of St .!Jnthony" are our Wood-Lice-Boiled in milk they still constitute a favourite remedy with numerous patients, and some few equally in. telligent practitioners, who attribute to them diuretic, absorbent, and aperient qualities. That they may act as an emetic, I can readily admit . .B.m. Ed. (3) Oniscus murarius, Fab.; Cuv., Journ. d'Hist. Nat., II, xxvi, 11, 13; Le Clo· porte ordinaire, Geoff., Insect. n, xxii, 1; Oloporte aaelle, Deg., Insect. VII, XIIV, 3; Desmar. Consid., XLIX, 5. (4) Onucua asellua, Cuv., lb.; Panz., Faun. Ins. Germ., IX, xxi; Oloporte ordi· naire, var. C, Geoff.;-Porcellio kvia, Latr.; Oloporte ordinaire, var. B, Geoff. IISOP.ODA. 111 seven joints. The superior subcaudal scales exhibit a range of , small holes( 1 ). ait'l'' L. Cuv Ib 14 15· Onistu~einerew, Panz.,Ib., Fascic. On'etUarm ''0' ., ., ., ' ' • ltD (l) 18 .. Om•s cua vu.r,•e g at ..... 8' y 1'11 ., Entom. ' IV, xi, 16; .B.rmaddle pmtu ' es- LXII, XCXoInIsIl~d ., XLXlX, 6·' -.ll.rmadille des boutiques, Dumer., tDhi et. .d es Sc. Nat., Imlla, r.P, · 117, a speci•e s fir om Italy formerly employed by the apo ecar1es. I, |
