. Fresh-water biology. Freshwater biology. ^68 FRESH-WATER BIOLOGY 14 (11) Inner margin of basal segment of male clasping antenna without a tubercle but with a spiny area near proximal end. Branchinecta lindahli Packard 1883. The body is robust; the caudal appendages are comparatively long; the eggs are small, and the ovisac usually contains about fifty of them. A plains species recorded from Kansas/ Nebraska, Colorado, and Wyoming. It is known to occur as high as 7500 ft. above sea level. Branchinecta lindahli. Headof male, front view. X 3. (After Shantz.). tS (8) Post-genital regio
. Fresh-water biology. Freshwater biology. ^68 FRESH-WATER BIOLOGY 14 (11) Inner margin of basal segment of male clasping antenna without a tubercle but with a spiny area near proximal end. Branchinecta lindahli Packard 1883. The body is robust; the caudal appendages are comparatively long; the eggs are small, and the ovisac usually contains about fifty of them. A plains species recorded from Kansas/ Nebraska, Colorado, and Wyoming. It is known to occur as high as 7500 ft. above sea level. Branchinecta lindahli. Headof male, front view. X 3. (After Shantz.). tS (8) Post-genital region 8-segmented, apical article of male clasping antenna compressed Artemia. Only one species. . Artemia salina (Linnaeus) 1851. Connecticut, Utah, California, Lower California. This species is remarkable for its ability to live in extremely saline water. It is frequently found in salt evaporating basins. The form is variable, and several varieties have been described. Fig. 1021. Artemia salina. Head of male, dorsal view. X 4. (After Daday.) * 16 (7) Head of male often bearing a frontal appendage or a laminar appendage on the basal segment of the clasping antemia. Family Chirocephalidae . 17 17 (3°) Frontal appendage of male variable, rather short; terminal segment of copulatory organ smooth Eubranchipus . 18 18 (25) Body segments of male and female all superficially unarmed. 19 19 (20) Frontal appendage of male short, about as long as basal joint of sec- ond antenna; lanceolate, margin denticulate. Eubranchipus vernalis Verrill 1869. Massachusetts, New Jersey, Indiana, Michigan. This species appears in small quiet pools soon after the snow disappears in spring, or even in mid-winter, but has not been observed during the summer months. Fig. 1022. Eubranchipus vernalis. Head of male, side view. X 4. (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 illus
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
