138 
BULLETIN OF THE BUREAU OF FISHERIES. 
Table 13. — Geographical distribution of plankton Crustacea in lakes examined — Continued. 
Species. 
Lake 
Suther- 
land, 
Wash., 
Aug. 18, 
1913, 
9 a. m. 
Lake 
Tapps, 
Wash., 
Aug. 19, 
2 1913 ’ 
Lake 
What- 
com, 
Wash., 
Aug. 20, 
1913, 
2p. m. 
Lake 
Samish, 
Wash., 
Aug. 21, 
1913, 
11 a. m. 
Lake 
Pad- 
den, 
Wash., 
Aug. 21, 
1913, 
2 p.m. 
Lake 
Wild- 
wood, 
Wash., 
Aug. 24, 
1913, 
10 p. m. 
Luna 
Lake, 
Wash., 
Aug. 24, 
1913, 
2 p.m. 
Silver 
Lake, 
Wash., 
Aug. 25, 
1913, 
1.30 
p. m. 
Lake 
Martha, 
Wash., 
Aug. 25, 
1913, 
3 p.m. 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Daphnia longispina var. hyalina Leydig 1860 
X 
X 
X 
X 
X 
X 
X 
X 
x 
x 
x 
X 
Diaptomus eiseni Lilljeborg 1889 
X 
oregonensis Lilljeborg 1889 
x 
X 
X 
tyrelli Poppe 1888 
X 
Epischura nevadensis Lilljeborg 1889 
X 
x 
X 
X 
X 
X 
Holopedium gibberium Zaddach 1885 
Pleuroxus uncinatus Baird 1850 
X 
Scapholeberis mucronata O. F. Muller 1785 
X 
Species. 
Lake 
Chap- 
lain, 
Wash., 
Aug. 26, 
1913, 
11 a. m. 
Lake 
Good- 
win, 
Wash., 
Aug. 27, 
1913, 
11 a. m. 
Lake 
WasL, 
Aug. 27, 
1913, 
10 a. m. 
Lake 
Ste- 
vens, 
Wash., 
Aug. 28, 
1913, 
11 a. m. 
Lake 
Steila- 
coom, 
Wash., 
Aug. 29, 
1913, 
2 p. m. 
Lake 
Spana- 
way, 
Wash., 
Aug. 29, 
1913, 
4 p.m. 
Ameri- 
can 
Lake, 
Wash., 
An;;. 29. 
1913, 
10 a. m. 
Lake 
Chelan, 
Wash., 
Sept. 11. 
1913, 
1p.m. 
AornnpriK Rare 
X 
X 
Alona affinis Leydig 1860 
Bosmina longirostris O. F. Muller 1785 
X 
X 
X 
longispina Leydig 1860 
X 
X 
Ceriodaohnia recticulata Jurine 1820 
X 
x 
Chydorus spharricus O. F. Muller 1785 
X 
X 
Cyclops bicuspidatus Claus 1857 
viridis var. americanus Marsh 1893 
X 
X 
X 
X 
Daphnia longispina O. F. Muller 1785 
X 
longispina var. galeata Sars 1864 
longispina var. hyalina Leydig 1860 
pulex De Geer 1778 
X 
X 
X 
X 
X 
X 
X 
Diaphanosoma leuchtenbergianum Fischer 1850 
Diaptomus oregonensis Lilljeborg 1889 
female (probably oregonensis) 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Epischura nevadensis Lilljeborg 1889 
Holopedium gibberium Zaddach 1885 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Macrothrix laticomis Jurine 1820 
Sida crystallina O. F. Muller 1785 
BIBLIOGRAPHY. 
American Public Health Association. 
1920. Standard methods for the examination of water and sewage (pp. 65-68). 4th edition. 
vii+115 pp. Boston. 
Baird, W. 
1857. Notes on the food of some fresh-water fishes, more particularly the vendace and trout. 
Edinburgh Philosophical Journal, N. S„ Vol. VI, 1857, pp. 17-24. 
Birge, Edward A. 
1897. Plankton studies on Lake Mendota. II. The Crustacea of the plankton from July, 1894, 
to December, 1896. Transactions, Wisconsin Academy of Sciences, Arts, and Letters, 
Vol. XI, 1896-1897 (1898), pp. 274-448, 28 pis. Madison. 
1904. The thermocline and its biological significance. Transactions, American Microscopical 
Society, Vol. XXV, 1904, pp. 5-33, 2 pis. Menasha, Wis. 
1918. The water fleas (Cladocera). In Fresh-water biology, by Henry B. Ward and George C. 
Whipple, Ch. XXII, pp. 676-740, Figs. 1050-1170. John Wiley & Sons (Inc.), New 
York. 
