Marsh—North American Species of Diaptomus. 515 
INDEX. 
Affinities of species, 384. 
Alhuquerquerists group, 398, 401. 
Altitude, as affecting distribution, 400. 
Alturas lake, 442. 
Beaver island, 413. 
Bibliography, 485. 
Birch lake, 428. 
Boulder lake, 460. 
Cedar lake, 400, 440. 
Chain o’ Lakes, 428. 
Climate, effect of on species develop¬ 
ment, 386. 
Collections, distribution of, 382. 
Creve Coeur lake, 440. 
Dead lake, 433, 462. 
Dvaptomus, diagnosis of genus, 401. 
D. albuquerquensis, 398, 399, 401, 469, 
471, 473. 
D. armatus, 481. 
D. Ashlandi, 394, 395, 400, 429. 
D. asymmetricus , 398, 399, 474. 
D. Bakeri, 391, 392, 393, 400, 420. 
D. Birgei, 386, 394, 395, 400, 435. 
D. clavipes, 396, 397, 400, 451. 
D. conipedatus, 396, 397, 401, 449. 
D. dorsalis, 398, 399, 467, 473. 
D. Eiseni, 399, 481. 
D. franciscanus, 391, 392, 393, 400, 418. 
D. giganteus, 446. 
D. Judayi, 397, 398, 464. 
D. Lehmeri, 471. 
D. leptopus, 396, 397, 400, 443. 
D. leptopus var. piscinae, 396, 445. 
J}. Lintowij 396, 397, 400, 454. 
D. longicornis var. leptopus, 443. 
Dj minnetonka, 478. 
D. minutus, 394, 395, 400, 426. 
D. mississippiensis, 391, 392, 400, 414, 
474. 
D. nebraskensis, 451. 
D. novamexicanus, 483. 
D. nudus, 397, 398, 460. 
jD. oregonensis, 391, 392, 393, 400, 409. 
D. pallidus, 391, 392, 393, 400, 416. 
D. pallidus var. sicilis, 424. 
D. piscinae, 445. 
D. purpureus, 398, 399, 476. 
D. pygmaeus, 409, 411. 
D. Reighardi, 386, 391, 392, 400, 412. 
D. saltillinus, 398, 399, 401, 469, 473. 
D. sanguineus, 399, 478. 
D. shoshone, 394, 431. 
D. sicilis, 394, 395, 400, 424. 
D. siciloides, 386, 394, 395, 400, 438. 
D. signicauda, 397, 398, 458, 465. 
D. spatulocrenatus, 396, 397, 456. 
D. stagnalis, 396, 397, 400, 446. 
D. tenuicaudatus, 394, 395, 400, 422. 
D. Trybomi, 466. 
D. Tyrelli, 441. 
D. Wardi, 394, 433. 
D. toashingtonensis, 397, 398, 462. 
Distribution of the Diaptomi, control¬ 
ling factors, 400. 
Distribution of species, 386. 
Drepanopus, 384. 
Elkhart lake, 428. 
Geneva lake, 428. 
Geographical distribution, 386. 
Glacial period, effect of on distribution, 
385. 
Glen lake, 423. 
Green lake, 395, 426, 428. 
Habitat, relation of to structure, 388. 
Heart lake, 418. 
Hosketts lake, 460. 
Intermediate lake, 413. 
Climate, effect of on species develop¬ 
ment, 386, 388. 
Key to species, 403. 
Lagunita, Lake, 422. 
Latitude, species distributed according 
to, 388. 
Leptopus group, 396. 
Limnetic and shallow water forms, dif¬ 
ferences between, 388. 
Littoral and limnetic forms, differences 
between, 388. 
Maple lake, 428. 
Michigamme, Lake, 426. 
Michigan, Lake, 462. 
Minnequa, Lake, 418. 
