Index 



ence of food juices on reac- 

 tion to contact, 285; influence 

 of internal states, 290-295; 

 modifiability in, 295; summary 

 of, 297-300. 

 Leeches, Behavior of with Espec- 

 ial Reference to its Modifia- 

 biUty, 197. 

 Leeches, as weather prognostica- 

 tors, 200; incubating eggs, 

 201, 203; hypodermal impreg 

 nation, 202; as human para 

 sites in Palestine, 205; cate 

 gories of movements in, 208 

 random movements, 209; loop 

 ing response, 210; swimming 

 response, 211; respiratory 

 movements, 212; food of, 217 

 scavengers in the genus Dina, 

 218; extreme sensitivity to 

 various stimuli, 221 ; photo 

 taxis in, 227; rheotaxis in 

 227; young leeches, behavioi 

 of, 241; thigmotaxis in, 232 

 241; diurnal rhythm, 240 

 function of the brain, 248; 

 acclimatization of leeches, to 

 repeated jars, 261; to sue 

 cessive shadows, 263; causa 

 five factors of, 265; physio 

 logical bases for reactions of,, 

 250; causes producing fatigue 

 in, 284; effect of combined 

 stimuli: influence of food 

 juices on reaction to contact, 

 285; effect of light and con- 

 tact, 288; starved leeches, re- 

 actions of, 287, 291; well-fed 

 leeches, reactions of, 288, 290. 

 See also Collections of Leeches, 

 and Leeches, Reactions of. 



Leeches, reactions of, general, 199; 

 righting, 214; to gravity, 230; 

 physiological bases for, 250; 

 influence of food juices on 

 reaction to contact, 285; of 

 starved leeches, 287, 291 ; of 

 well-fed leeches, 288, 290. 



Lemmermann, E., cited, 21. 



Lepidoptera, food of meadowlark, 

 430. 



Leptotene stage in spermatogene- 

 sis, 516. 



Leucophores, pi. 6, opp. p. 154. 



Lewis, M. E., and W. H., cited, 

 157. 



Leydig, F., cited, 143. 



Limnatis nilotica, 205. 



Linnet, 5, 379. 



Lister, cited, 143. 



Literature on leeches, resume of, 

 199. 



Little, Etta V., 307. 



Lizzia, 311, 317, 321. 



Locust, 1. 



Locustidae, 429. 



Loeb, .J., cited, 144. 



Long, J. A., 308, 511. 



Looping response in leeches, 210. 



Lori rajah, 64. 



Lorius garrulus, 64. 



Macrobdella decora, 203. 



Magnesium sulphate, effect of, on 

 leech behavior, 280. 



Malformation in meadowlarks, 477, 

 492. 



Marsh hawk, feathers of, 329-376. 



Masterman, E. W. G., cited, 205. 



Maturation division in Aneides 

 hif/iihrix, 518. 



Mayer, A. G., cited, 307. 



Meadowlark, the Western (Stur- 

 neUa Xr,/lrrfa) in California, 

 A Determination of the Eco- 

 nomic Status of, 377. 

 Meadowlark, western, 5, 6, 7, 8, 10, 

 15, 17, 18, 19, 400, 461, 476, 

 491; abundance of, 402; al- 

 binism in, 479, 492; damage 

 caused by, 404, 408; death 

 rate, 479, 492; digestion, 412; 

 economic status, 466; eggs, 

 404; experiments on captive 

 birds, 409; feces, 437; food 

 habits and requirements, 410, 

 420-436, 438-439, 449, 451, 

 452. 453, 45.5, 457, 460, 487; 

 weed seeds destroyed by, 442, 

 473; a grasshopper destroyer, 

 430; habits, 400; incubation 

 and moult, 478; insects de- 

 stroyed by, 472; legislation 

 regarding, 475, 476; malfor- 

 mation, 477, 492; nesting hab- 

 its, 404; nestlings, 404, 411, 

 447; non-game bird, 472; par- 

 asitism in, 477, 492 ; protection 

 of crops from, 474; song, 387; 

 stomach contents, 413, 418, 

 420; stomach examinations, 

 491 ; variation in, 477. 

 Melanin, 147. 



Melanoplus differentialis, 2, 3, 430. 

 Melicertum, 307. 

 Meloidae, 427. 



Melospiza melodia heermanni, 5, 

 6. 



[534] 



