. Fresh-water biology. Freshwater biology. COPEPODA 763 34 (33) Right endopodite of male fifth foot exceeds length of first segment of exopodite, spines of first basal segments small. Diaptomus sicilis Forbes 1882. Found in the Great Lakes, being the most abundant form taken in limnetic collections; found to some extent in other lakes in the same general region. It is, as a rule, confined to the larger and deeper lakes. It is frequently found asso- ciated with D. minutus but is read- ily distinguished by the slender, symmetrical, sickle-shaped hook terminating the exopodite of the right iifth
. Fresh-water biology. Freshwater biology. COPEPODA 763 34 (33) Right endopodite of male fifth foot exceeds length of first segment of exopodite, spines of first basal segments small. Diaptomus sicilis Forbes 1882. Found in the Great Lakes, being the most abundant form taken in limnetic collections; found to some extent in other lakes in the same general region. It is, as a rule, confined to the larger and deeper lakes. It is frequently found asso- ciated with D. minutus but is read- ily distinguished by the slender, symmetrical, sickle-shaped hook terminating the exopodite of the right iifth foot of the male; this is not a characteristic, however, that will distinguish it from species found in other localities. Length of female, mm. Length of male, mm. Fig. 1189. Diaptomus sicilis, male. A, terminal segments of right antenna. X 194. B, fifth feet. X 194. (Original.) 35 (27, 32) Process exceeds in length penultimate segment 36 36 (39) Large. Lateral spine of second segment of exopodite of right fifth foot of male terminal or nearly so 37 37 (38) Process of antepenultimate segment of right antenna of male only slightly longer than penultimate segment, antennae equal in length to cephalothorax. Diaptomus shoshone Forbes Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ward, Henry Baldwin, 1865-1945; Whipple, George Chandler, 1866-1924. joint author. New York, John Wiley & sons, inc. ; [etc. ,etc. ]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
