560 



INDEX. 



Diaptomus, North American spe- 

 cies ( >f — Continued. 

 on descriptions in 

 Schacht's article on, 101. 

 explanation of plates of, 



205-207. 

 introduction to Schacht's 



article on, 07 -101. 

 key to, based on characters 



of female, 1 14-122. 

 key to, based on characters 



of male, 107- 1 14. 

 keys of, in Schacht's ar- 

 ticle on, plan and use 

 of, 100, 101. 

 literature accessible in 

 preparation of Schacht's 

 article on, go. 

 material at command for 

 Schacht's article on, qq. 

 novamexicanus, 99, in, 116,149- 

 151. 

 distribution of, 183. 

 number of recognized North 



American species of, 97. 

 on distinguishing characters of 



sex in, 100. 

 on movements of, 235. 

 on specific distinctions of males 



in, 100. 

 oregonensis, log, nq, 124, 151-154, 

 170, 171, 229, 265. 

 distribution of, 154, 183. 

 Osphranticum.Limnocalanus, and 

 Epischura, discussion 

 of structural similarities 

 and differences indica- 

 tive of relationships of 

 the genera, 226. 

 general bibliography of 

 genera of, 185 204; ad- 

 ditions to, 268. 

 synopsis of the relation- 

 ships of the genera, 102- 

 105. 



Diaptomus — Continued. 



pallidus, 108, 121, 124, 137, 144- 

 146, 265. t 

 distribution of, 183. 

 females of, 100. 

 var. sicilis, 122. 

 piscina?, 98, ioq, 116, 118,125-127, 

 181. 

 distribution of, 182. 

 fifth pair of legs of male of, 

 contrasted with those of 

 other species, 125, 127. 

 reighardi, 98, ioq, 121, 16(5-171. 



distribution of, 184. 

 roubaui, 166. 

 salinus, 98. 



sanguineus, g7, 112, 117,129,133- 

 138, 160, 166, 234. 

 and D. stagnalis compared, 136. 

 color of, 138. 

 distribution of, 183. 

 peculiarity in structure of, 134. 

 synonymy of, 135. 

 variation in, 136, 137. 

 serricornis, 162. 



shoshone, no, n6, 127, 141 143. 

 164. 

 distribution of, 143, 183. 

 sicilis, 97, 100, in, 121, 122-124, 

 145, 167, 168, 169, 182,229, 264- 

 compared with D. siciloides,i 55. 

 details of structure distinguish- 

 ing from D. ashlandi and D. 

 pallidus, 124. 

 distribution of, 124, 182. 

 females of, 100. 

 variation in structure of, 124. 

 var. imperfectus, 124, 158, 167, 

 169. 

 siciloides, g8, ico, 114, 121, 124, 

 137, 146, 154 156, 157, 165, 



l66, l8l, 182, 22Q, 265. 

 compared with I), caroli, I ). 

 gracilis, and 1). sicilis, 155, 

 182. 



