. Breviora. No. of Females. .78 19 .60 62 &Z .63 64 65 .66 .87 .68 .39 .90 .91 .92 wh/lh Fig. 2. of individuals (ordinate) exhibiting given relative head lengths (width of head [WH] divided by length of head [LH]), males at top, females at bottom. The only good series of decipicns from one locality is the series of 16 females and 4 males from Chilliwack, British Colum- bia, on which Whittaker based his descriptions of hraehypterus and ftavicornis. As discussed further below, I have studied or oi)tained the necessary information on this entire series. Twelve of the females are micr
. Breviora. No. of Females. .78 19 .60 62 &Z .63 64 65 .66 .87 .68 .39 .90 .91 .92 wh/lh Fig. 2. of individuals (ordinate) exhibiting given relative head lengths (width of head [WH] divided by length of head [LH]), males at top, females at bottom. The only good series of decipicns from one locality is the series of 16 females and 4 males from Chilliwack, British Colum- bia, on which Whittaker based his descriptions of hraehypterus and ftavicornis. As discussed further below, I have studied or oi)tained the necessary information on this entire series. Twelve of the females are micropterous (Type B), three are brachyp- terous (Type C), and one is maeropterous (Type D). This 12 :3 :1 ratio, obtained in a series from one locality, is approached rather closely by the ratio for the species throughout its 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. , Museum of Comparative Zoology, Harvard University
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