. Fresh-water biology. Freshwater biology. 674 FRESH-WATER BIOLOGY 67 (70) Umbones one-sixth length of shell from anterior end 68 68 (69) Shell large (16 mm. long), flat; umbones small; flagella of second antenna 13- and is-segmented. Estheria californica Packard 1874. Thus far this species has been collected at two localities in California. The small size of the umbones is remarkable. Length of shell, 16 mm.; height, 10 mm.; breadth, 4 mm. Fig. 1044. Estheria californica. Shell, side view. X 3- (After Packard.). 69 (68) Like Estheria californica but umbones more prominent and dorsal edge of s
. Fresh-water biology. Freshwater biology. 674 FRESH-WATER BIOLOGY 67 (70) Umbones one-sixth length of shell from anterior end 68 68 (69) Shell large (16 mm. long), flat; umbones small; flagella of second antenna 13- and is-segmented. Estheria californica Packard 1874. Thus far this species has been collected at two localities in California. The small size of the umbones is remarkable. Length of shell, 16 mm.; height, 10 mm.; breadth, 4 mm. Fig. 1044. Estheria californica. Shell, side view. X 3- (After Packard.). 69 (68) Like Estheria californica but umbones more prominent and dorsal edge of shell sloping down to posterior end. Estheria newcombii Baird 1866. Possibly the same as the last species but as Packard's and Baird's figures appear to differ somewhat the two are separated. It is found only in California. Fig. 1045. Estheria newcombii. Shell, side view. X 2. (After Baird.) 70 (67) Umbones more than one-sixth length of shell from anterior end. 71 71 (72) Shell long and narrow; umbones small, one-fifth length of shell from anterior end; telson armed with small fine teeth; hands of male short and thick; flagella of second antenna 15- and 14-segmented. . Estheria compleximanus Packard 1877. Packard reported this species from two localities in Kansas and more recently Richard discovered it in a collection from Lower California. Length of shell, II mm.; height, mm. Fig. 1046. Estheria compleximanus. Shell, side view. X 3- (After Packard.). 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
