Index; 



mals, in size, shape and number 

 in spermatocyte and in egg, 374- 



377, 378; division of, 375-377, 



378. See also Spermatocyte; 

 spermatogenesis. 



Chromatin, generative, 187, 192, dis- 

 tinguished from trophoehromatin, 

 191; vegetative, 187, 190, 192; 

 extrusion of, in Naegleria grub- 

 eri, 252, 258. 



Chromidia, formation in cysts, 258, 

 277; in Amoeba lacertae, 259; in 

 other amoebas, 259-261; signifi- 

 cance, 260. 



' ' Cliromidial hypothesis ' ' of Hertwig, 

 188. 



Cilia in Blepharocorys equi, in 

 oesophagus, 100 ; in anal open- 

 ing, 102. 



Ciliate. See Blepharocorys equi. 



Ciliates from the caecum of the horse, 

 American and foreign species, 96. 



Ciona, 442. 



intestinalis, distribution of, 457 ; 

 extent of breeding time, 457. 



Cladocera, food of, 181. 



Clevelaudia ios, 164. 



CoecoUthophores, food for copepods, 

 178. 



Coleoptera, 114. 



Cololabis saira, 157. 



Columbia Basin, Columbia County, 

 Washington, faunal areas and 

 fauna, 300-314; influence of arti- 

 ficial conditions, 326. 

 Sagebrush area, 300-305 ; character- 

 istics, 300; fauna, 300; habitats 

 and associations, sagebrush, 301, 

 rocky-slope, 302, willow, 303, 

 water-margin, 304, aquatic, 305, 

 aerial, 305; climate, 325; life- 

 zone, 331. 

 Prairie area, 305-313; character- 

 istics, 305, 306; habitats and asso- 

 ciations, bunchgrass, 307, rocky- 

 slope, 308, cottonwood-ivillow, 

 309-311, water-margin, 312, 

 aquatic. 313, aerial, 313 ; climate, 

 325; life-zone, 331. 

 Blue Mountain area, characteristics, 

 314; species, 314; habitats and 

 associations, rocky-slope, 315; 

 yellow-pine, 315, 332, buck- 

 brush, 316; alpine-fir, 317, low- 

 land-fir, 319, water-margin, 321, 

 aquatii, 321, aerial, 322; climate, 

 325, 326; life zone, 332. 



Columbia County, Washington, land 

 vertebrates in, 293 ; map of, 295, 

 299. See also Columbia Basin. 



Copepoda, method of food-getting, 

 171, 175; source of food supply, 

 176-179, 181 ; intestinal contents, 

 177-179. See also Acartia elausi 



and A. tonsa; Calanus; Eucala- 

 uus ; Plankton. 



Copepods, Pelagic, The Feeding 

 Habits and Food of, and the 

 Question of Nutrition by Or- 

 ganic Substances in Solution in 

 the Water, 171; sunmiary, 182; 

 literature cited, 183. 



Coronado, 158. 



Coscinodiscus, food for marine cope- 

 pods, 177-181. 



Crithidia, 2. 

 gerridis, 3, 4. 

 melophagia, 7. 



Crithidia Irpiocoridis. Sp. Nov., An 

 Outline of the Morphology and 

 Life History of, 1; occurrence, 

 1 ; type specimens, 2 ; importance, 

 2 ; methods, 2 ; acknowledgments, 

 3; morphologj' of flagellate in 

 vegetative phase, 3 ; nucleus, 4 ; 

 extranuclear organelles, 4 ; rhizo- 

 plast, 5 ; axostyle, 5 ; flagellum, 

 6 ; movement, 6 ; longitudinal 

 division, 7 ; life history, 8 ; pre- 

 flagellate (stomach phase), 8; 

 spores, 9, 13 ; sexual reproduc- 

 tion, 10; flagellate (vegetative 

 phase in mid-intestine, ilium, and 

 colon), 8, 11; postflagellate (rec- 

 tal phase), 11; attached forms, 

 12, encystment, 13 ; free forms, 

 12, nucleus of, 12 ; relation of 

 parasite to host, 13 ; literature 

 cited, 14; explanation of plates, 

 16-22; doubtful developmental 

 forms, 198; attachment of rhizo- 

 plast, 212, 213, figure, 18. See 

 also Box-elder bug. 



Chromatin, generative and vegetative, 

 187, 190, 192. 



"Corps siderophile" of Alexeieff, 217. 



Cryptotrema corallinum, 165. 



Cultivation, The, of Tissues from 

 Amphibians, 55; literature re- 

 fcrreil to, 62. 



Cycloposthium bipalmatum 96. 



Cyclotella, food for marine copepods, 

 177. 



Cyst, in Naegleria gruberi, 261-264; 

 characters, 261 ; encvstment, 263, 

 277; excystment, 263, 277. 



Daniel, J. F., 349. 



Dead Man's Island, 165. 



Delia Valle, Professor, acknowledg- 

 ment, 474. 



Devescovina striata, parabasal appa- 

 ratus, 225. 



Dice, L. R., 293. 



Dictyocha, food for copepods, 179, 

 180. 



Dictyocysta, wide distribution, 64. 

 lepida, 65; figures of, 65. 

 templum, 65. 



[515] 



