. Fresh-water biology. Freshwater biology. Fig. 1367. The larva of the orl fly, Sialis infumala. Fig. 1368. The eggs of the orl fly; from a 1369. A spongilla fly, Sisyra. the former yellow and brown in color, the latter, plain brown. Nothing is known of the feeding habits of the adults. Their larvae. 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, 1866-1
. Fresh-water biology. Freshwater biology. Fig. 1367. The larva of the orl fly, Sialis infumala. Fig. 1368. The eggs of the orl fly; from a 1369. A spongilla fly, Sisyra. the former yellow and brown in color, the latter, plain brown. Nothing is known of the feeding habits of the adults. Their larvae. 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. ]
Size: 2701px × 925px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
