1084 Index to Vol. XX. 
Plants, N: arene names Pog s 767. Reason, canine, 827 
of North Ameri s ao ogue of, 64. Red sea, petroleum i deposits of, 961. 
production of male and female, Ea So a age, fragment of, 969. 
Plat vision, 69. eptiles 38. 
Platygonus — 49- Respiratory center, recent investigations on the, 
Pliauchenia, 
Pliocene, ra, Rhachitomi, 76. 
d ts at ae and Antwerp, 969. Rhamphobates, 43- 
Pliolophus aon, a Rhea ricana, 298. 
Plover, protracted flight of a golden, &98. macrorhyncha, 298. 
Poa nemoralis, galls on Rhinoceros mauritanicus, 60. 
Poebrotherium labiatum, "ei Phinseote., 283. 
Rhizopoda in x ew South bate 982. 
Podocoryne, Pec scot yy 916. Rhoads, S. N., crow roosts and roosting crows, 
Pogonomyrmex occidentalis, 1 691 ; 
Polydesmus canadensis, val ‘tee of, 651. Rivers, J. J., description of the form of the fe- 
Pomatiopsis lapidaria, male in a Lampyrid, 648 
a volcano of, “109. Rivers of the Punjab, HP ME 
Porifera, Robin, 2 
Poekie hyperite, Ro cks, OGI. of Southwestern PA 
276. 
of its apparent causes, 29. oe 
larval form of Polydesmus can- Rocky pact — drift of, 925. 
adensis, 651. Rosenbush’s Mik pische Physiographie, 297- 
a new arrangement of the order Ruppia Diha ae 
of insects, 808, Russia, steppes of, va 
the former southern limit of the Ryder, J., developmen of th w, 823 
white or polar bear, 655. abe ty of e adh, 77- 
the molting of the lobster, 173. e-hise tory of Thal 
the amar aay in New Eng- oyster culture, iaia 
land, 7 e develo ge of Fundulus heteroc- 
sense ard Lance in insects, tra litus, 82 
lation of Kraepelin’s wak, the otamo i of the American 
. lobster, Homarus americanus H. 
Bori gi, abundance of Aurelia Moe ia 7 
aurita, 81 the origin of the A 
Portuguese authority, extension of, 5 the ae of the mene. ‘cells which 
protectorate of Dahomey, 264. est oa br rop i c fish 
Potaneri’s journey in N. W Chin mabey 
Poulton, E. B., ~ darkening of ‘the b airs of the the unpaid fins of Selachiansy 142. 
aged “gaa before pupa- 986. 
the: distribution of derived plant- Salmon, <a s problemati ee 
, 
Pratincola aisen 78. ne cereale late, Sx tones, yellow, of Scotland, 803. 
eae 5 
later JA N. how nig Suak be taught in Sage ella s kata, 639. 
Dia bom eriens;i y ag Savoyanne, go, 282. 
Proa! e Croc — 
ae oe en eae Schneck, kJ: longevi ity of turtles, 897 J ka 
talus, 613, = Sig - Eles, organization of, at the “national capi 
Enna atg 612, e 269, aegis Scorpion’ s aie antidote of, 172. 
Proteus anguineus, 821. Sciurus striatus, 236. 
Protolabis transmontanus, 620. (Tami ias). ysteri, 241. : 4 
Protophasmida : om, os i 
i living a and dead, 72. rchin nervous s rae o 7978: a 
Va ' curoptera, 69, i Sclachians, Pac Pe a T a t42. i 
a i i ecti al 7 
poe Sn ene ia ron a Sensi ibility y ed tank con kindkok ate 
Psyche helix, 169. Sesia scoliformis, 3 169. 
Psyllidze, 283. Sheep, new species, 751- : 
-= Psyllopsis, 283, 284. Shell e t rmation in bivalve mollusks, 732. 
i Pterichthyidz, 1031. Sie, » pah, 755- 
?P vesenice uoagali idis, 167. Siberian lake, ee up of, 962. ? 
weigh ilene 
j loss marin tin freshly found, 814. Eaa satyrus, per T 
wurm 44, 45- 
acl ae PEIN Regs Au Siouan tribes, migrations of, 211. 
Skull, human, 748. 
Smell, aae of the sense Ponies 
sense of in insects, 
ers J. B., a asks’ nests peg Tate roe 
Snake: 
Snakes, peor A and other, 744- 
Soaring, mechantes of, 653 
Ti mec! cs Of, 053. 
Society of son ao, U. S., 207 
Sol is xyloni, 682 
Somali land, r E. L. James’ travels in, 52 
. 
; 264. 
ladia, i a ag 
Sparron W of Echini, aa 
