" _cingendus_, description of, 38, Plate xx. " " flagellum of, =38= " _pruinosus_, 44, Plate xix. " " description of, =37= " " flagellum of, 37 " _simplex_, 38 Miocene, 2 Middlesex, West, 35 Millipede, pill, 15, 40 Moult, 11 Moulting, process of, 12, 13, 14 Mouth appendages, 3, =4= _muscorum, Philoscia_, description of, 29 Names, local, 15 _nasatum, Armadillidium_, description of, 40 Nephrocytes, branchial, 8 " cephalic, 8 Nerve cord, 8, =8= Nervous system, 8 Norman, Rev. Canon A. M., 25, 27, 45 _oceanica, Ligia_, description of, 20 Oenigen, Miocene of, 2 Old-sows, 16 Old women of the wood, little, 16 Oligocene, 2 Onisci, 17 " characters of, 27 Oniscidae, 19 _Oniscus_, 28 " branchial nephrocytes, 8 " characters of, 17, 18, 27 " _agilis_, 21 " _asellus_, 4, 15, 28, 44, Plate ix. _Oniscus asellus_, Albino in Epping Forest, 28 " " description of, 27 " " excretory organs of, 8 " " flagellum of, =28= " " young examples of, 28 " _convexus_, 39 " _fossor_, 19, 28 " _granulatus_, 32 " _murarius_, 27 " _muscorum_, 29 " _oceanicus_, 20 " _pulchellum_, 42 " _sylvestris_, 29 Oolite, 2 Ovaries, 8, =8= Oviducts, 8, =8= Palmer, 16 Penis, 9, =9= Peduncle, 3, =3= _Philoscia_, 21, 28 " characters of, 17, 18, 29 " _couchii_, 44, Plate xi. " " description of, 30 " " flagellum of, =30= " _marmorata_, 29 " _muscorum_, 21, 44, Plate x. " " description of, 20 " " flagellum of, =29= _Philougria celer_, 29 " _riparia_, 22 " _rosea_, 24 " _vivida_, 23 Physicians, college of, rules for preparing woodlice for medicinal use, 18 _pictus, Porcellio_, description of, 33 Pill millipede, 15, 40 _Platyarthrus_, 22 " characters of, 17, 18, 39 " _hoffmannseggii_, 44, Plate xii. " " description of, 30 " " flagellum of, =31= _Porcellio_, 6, 28, 38 " characters of, 7, 18, 32 " _armadilloides_, 39 " _asper_, 32 " _aztecus_, 35 " _brandtii_, 32 " _cinerascens_, 35 " _cingendus_, 38 " _cotillae_, 35 " _cubensis_, 35 " _degeerii_, 35 " _dilatatus_, 34, 44, Plate xv. " " description of, 33 " " flagellum of, =34=