. Fresh-water biology. Freshwater biology. 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 s
. Fresh-water biology. Freshwater biology. 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.). 72 (71) Shell more or less swollen or globose; umbones prominent. 73 73 (74) Shell globose, wider than high; umbones prominent and oblique one-fourth length of shell from anterior end, lines of growth not sharply marked Estheria digiicti Richard 1895. Described from Lower California. 74 (73) Lines of growth well marked; shell not wider than high 75 75 (78) Flagella of second antennae 15- and r4-segmented 76 76 (77) Shell globose with 24 lines of growth; umbones large and prominent, two-fifths length of shell from anterior end. Estheria belfragei Packard 1871. This fine species was described by Packard from specimens collected in the month of April at Waco, Texas. Fig. 1047. Estheria belfragei. Shell, side view. X 4- (After Pickard.). 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, Ge
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
