. Bulletin. Natural history; Natural history. September 1937 ROSS: NEARCTIC ALDER FLIES 65. 37 38 Genitalia of Sialis ; Fip. 28.—S. itasca. Fig. 32.—S. mohri. Fig. 29.—S. velata. Fig. 33.—S. concava. Fig. 30.—S. infumata. Fig. 34.—S. itasca. Fig. 31.—S. hasta. Fig. 35.—S. velata. Abbrkvia I'lONS. —a, Literal view ot genital and terminal plates; b, caiulal view of terminal plate; g, genital plate; 1, lateral plate; t, terminal plate; 9, ninth sternite. Fig. 36.—S. infumata. Fig. 37.—S. concava. Fig. 38.—S. hasta. Fig. 39.—S. Please note that these images are extracted from scan
. Bulletin. Natural history; Natural history. September 1937 ROSS: NEARCTIC ALDER FLIES 65. 37 38 Genitalia of Sialis ; Fip. 28.—S. itasca. Fig. 32.—S. mohri. Fig. 29.—S. velata. Fig. 33.—S. concava. Fig. 30.—S. infumata. Fig. 34.—S. itasca. Fig. 31.—S. hasta. Fig. 35.—S. velata. Abbrkvia I'lONS. —a, Literal view ot genital and terminal plates; b, caiulal view of terminal plate; g, genital plate; 1, lateral plate; t, terminal plate; 9, ninth sternite. Fig. 36.—S. infumata. Fig. 37.—S. concava. Fig. 38.—S. hasta. Fig. 39.—S. 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 Illinois. Natural History Survey Division. Urbana, State of Illinois, Dept. of Registration and Education, Natural History Survey Division
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Keywords: ., booka, bookcentury1900, bookdecade1910, booksubjectnaturalhistory
