LIGIDIUM HYPNORUM Cuvier. _Length, nine millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE III._ TRICHONISCUS PUSILLUS Brandt. _Length, four millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE IV._ TRICHONISCUS VIVIDUS Koch. _Length, eight millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE V._ TRICHONISCUS ROSEUS Koch. _Length, five millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE VI._ TRICHONISCOIDES ALBIDUS Budde-Lund. _Length, four millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE VII._ HAPLOPHTHALMUS MENGII Zaddach. _Length, three to four millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE VIII._ HAPLOPHTHALMUS DANICUS Budde-Lund. _Length, three to four millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE IX._ ONISCUS ASELLUS Linné (The common slater). _Length, sixteen millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE X._ PHILOSCIA MUSCORUM Scopoli. _Length, nine millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE XI._ PHILOSCIA COUCHII Kinahan. _Length, nine millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE XII._ PLATYARTHRUS HOFFMANNSEGGII Brandt. _Length, three millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE XIII._ PORCELLIO SCABER Latreille. _Length, fourteen millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE XIV._ PORCELLIO PICTUS Brandt and Ratzeburg. _Length, thirteen millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE XV._ PORCELLIO DILATATUS Brandt. _Length, fifteen millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE XVI._ PORCELLIO RATHKEI Brandt. _Length, twelve millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE XVII._ PORCELLIO LAEVIS Latreille. _Length, sixteen millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE XVIII._ PORCELLIO RATZEBURGII Brandt. _Length, eleven millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE XIX._ METOPONORTHUS PRUINOSUS Brandt. _Length, nine millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE XX._ METOPONORTHUS CINGENDUS Kinahan. _Length, six millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE XXI._ CYLISTICUS CONVEXUS De Geer. _Length, twelve millimetres._ Charles Sillem, del. ad nat. F. W. Reader, sculpt.] [Illustration: _PLATE XXII._ ARMADILLIDIUM NASATUM Budde-Lund. _Length, fifteen millimetres._