viii The American Naturalist. [Vol. XXVIII, 
of Sponges, 439; Oökinensis in on maximus, 528; Earthworm 
Phylogeny, tnd "Determination f Sex 
Entomology.—Evolution and bsg omy, wy Habits of Halobates 84 ; Pupation 
of Gyrinus oa Dinew s, 85; Hermann August Hagen, 86; E omo- 
logical Notes an news, 86, 195, 445, 535; North American Dacian. 
pidae, 189; Peculiar Oviposition of an Aphid, 190; Pupal Develop- 
ment ar Color in Imago, 191; Studying ‘Insect Histories, 192; 
Biology of the Apple Aphis, er paca in Cecidomyia, 194; 
Flights of Dragon Flies, 194; nivorous Tipulid, 195; The 
Four-lined Leaf- Eres (Ilustrated), gy Indiana Orthoptera, 281; A 
Curious Hemiptero Ameriaan Membracidae, 283; Colors 
of Lepidopterous Sain ‘esa, pr of Arseniteson Caterpillars, 284 
;M , 534; New 
York Reports, 535; The Pear-Leaf 2e ter, 616; Habits of the Leap- 
ing — of Southern Georgia, 618 ; Note on the Winter Ant, 619 ; North 
merican Centophili, 893; The Plume Moths, 893; New Use of Bi- 
sulphide æ apa 894; Mimicry in Diptera, 894; Description of a 
ew Pelecinus from Tennessee, 895; Flight of Locusts, 896 ; Biology 
3; Embryoni i 
id Larvae, 1060; Soci cono he Hive Bee, 1060; Notes on 
mpshire Lepidoptera, 1 emiptera of Buffalo.............. 
Psychology.—The Recidivist, 537; Mutualists, 713; The Habit of ipee 
nimals, 898 ; Subjective Defense in the Low Animals, 
minal Skull, 958; The Habits of pre eae opacum, 
; Habits of Ophibolus getu ENA mes 
Physi ee of Viper Poiso: n, 620; T he Secretion a Urea. 
Archaeology and Ethnology.—The Plateau Implements , of Southe n England, 
; Plistocene Gravel Specimens in in Spain, 89; The Mia kauaks of 
of American and Prehistoric l the University of Pennsylva- 
nia, 355, 626; The Trenton Gravel tho 357 ; . W. Boy 
Dawkins on Paleoli lithic Man in Eur 448; Tobacco Pipes in Shell 
; an 
Italy, 971 ; The Age of Certain Stalactites, 1063: ; Indians Mining Lead, 
Mieroscopy.—Orienting Small Objects for Sectioning and « Fixing ” them 
i arin ial 
PROCEEDINGS OF SCIENTIFIC SOCIETIES 93, 197, “sa wis ei oe 
ScrENTIFIC News 95, 203, 287, 367, 460, 550, 630, 722, 830, 906 
711 
1062 
977 
978. 
