Index 



Cuculidae, feathers, 364. 

 Cuculiformes, feathers, 363; down, 

 365; color modifications, 366; re- 

 lationships, 367; epiphyology, 

 summary, 3)67; systematic posi- 

 tion, 389; figures of barbules, 

 opp. 432. 

 Cuculus, feathers, 364; down, 365. 

 Cursorius, relationships, 324; down, 

 357; systematic position, 389. 

 gallicus, feathers, 356; figures of 

 barbules, opp. 428. 

 Crucigera websteri, 227. 



zygophora, 226. 

 Cyanocitta stelleri, feathers, 380; 



figures of barbules, opp. 438. 

 Cycloposthium, 47. 



bipalmatum, 47, 48, 49. 

 Cypseli, figures of barbules, opp. 436. 

 Cypselidae, feathers, 373; down, 375. 

 Cypseloides, down, 375. 



niger, feathers, 373. 

 Dasybranchus glabrus, 212. 



giganteus, 212. 

 Dasytricha, 46, 47. 

 Dendragapus, nestling down, 260. 

 Dexter, J. S., cited on Drosophila, 



513. 

 Didunculus, down, 361. 

 Diomedea, aftershaft, 302; down, 

 305. 

 exsulans, feathers, 303, 304; fig- 

 ures of barbules, opp. 406. 

 Diopatra californica, 195. 

 Diplodinium, genus, 46, 47; discus- 

 sion, 58; table of generic differ- 

 ences, 59; table of dimensions, 

 95; observations on living ma- 

 terial, 95; conclusions, 101; dis- 

 cussion of Braune's paper, 103- 

 109. 

 Diplodinium (sp.?), 48. 

 bursa, 60. 



Fiorentini, 59, 61. 

 cattanei, 60, 61. 

 caudatum, 48, 51, 60, 61. 

 dentatum, 60, 61. 

 denticulatum, 60, 61. 

 eberleini, nom. nov., 51, 61. 

 ecaudatum, 49, 60, 61; forms, 61; 

 observations on living mater- 

 ial, 95; rate of movement, 96; 

 distribution of infection, 96. 

 forma bicaudatum, 61, 92; fig- 

 ures, opp. 118. 

 forma cattanei, 61, 94; figures, 



opp. 118. 

 forma caudatum, 61, 90; figures, 



opp. 118. 

 forma ecaudatum, 62; ectoplas- 

 mic structures: cuticle, 63, 

 skeletal areas, 64, ectoplasm, 

 65, skeletal structures, 65, 

 boundary layer, 67; entoplasm, 



68; organs of the body: mac- 

 ronueleus, 71, micronucleus, 71, 

 organs of locomotion, 72, of 

 food-taking, 77, of defecation, 

 80, of excretion, 82, neuro- 

 motor ajjparatus, 82, dorsal 

 motor strand, 83, ventral mo- 

 tor strand, 83, opercular 

 fibers, 83, adoral lip strand, 

 83, oesojjhageal fibers, 83, cir- 

 cumoesophageal ring, 83, neu- 

 rophanes, 83, motorium, 83, co- 

 ordinating function, 86; re- 

 tracted form, 88; figures, ojjp. 

 114, 116-120, 122. 

 forma quadricaudatum, 61, 93; 



figures, opp. 118. 

 forma tricaudatum, 61, 62; fig- 

 ures, opp. 118. 

 maggii, 60, 61. 

 mammosum, 51. 

 rostratum, 48, 51, 60. 

 uncinatum, 47. 

 unifasciculatum, 47. 

 vortex, 51, 60. 

 Diplodinium ecaudatum, with an Ac- 

 count of its Neuromotor Appa- 

 ratus, 43; review of literature, 

 45; present status, 49; validity 

 of species, 51; technique, 52, 55; 

 bibliography, 110. 

 Distylia rugosa, 225. 

 Dorsal spines of barbules, definition, 



253. 

 Down, definition, 250. 

 Down barbules, taxonomic value, 



387. 

 Drepanoptila, feather plate, 264; 



feathers, 360. 

 Dromaeidae, primaries, 290. 

 Dromaeus novae-hoUandiae, feathers, 

 291; figures of barbs and barb- 

 ules, opp. 400. 

 Drosophila Melanogaster Meig., In- 

 heritance of Extra Bristles, 495; 

 environment: influence of food, 

 499, of temperature, 501; in- 

 heritance, Mendelian, 501, vari- 

 ation, 507, partial inheritance, 

 507, genetic differences, 508 ; sex 

 linkage, absence of, 509; selec- 

 tion, 510. 

 Duck. See Anseres. 

 Eberlein, E., cited on protozoan fauna 

 in stomachs of ruminants, 44, 

 48, 52, 60. 

 Ecker, A., and Wiedersheim, E., cited 



on frog anatomy, 168. 

 Egretta candidissima, feathers, 323; 

 aigrettes, 323; figures of barb- 

 ules, opp. 412. 

 Herodias, 323; aigrettes, 323. 

 Elanus, feathers, 335. 



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