. Studies in natural history. Natural history; Natural history. 98 IOWA STUDIES IN NATURAL HISTORY al specimens show a faint trace of spots on the upper surface of the pri- maries, and frequently the ground color is darker. 2. MASTOR BELLUS Pamphila hellus Edw., Papilio iv, 57, 1884. Biol. , Ehop. n, 568, pi. 100, f. 36, $ gen., 1900. Skinner, Ent. News xi, pi. n, ff. 11, 12, 1900. Kellogg, Am. Ins. pi. ix, ff. 11, 12, 1904. Wright, Butt. W. Coast 247, pi. xxxi, f. 443, 1905. Arizona, May to July. 3. MASTOR PHYLACE PampMla phylace Edw., Field and Forest in, 117, 1878. Arizona, Colorad
. Studies in natural history. Natural history; Natural history. 98 IOWA STUDIES IN NATURAL HISTORY al specimens show a faint trace of spots on the upper surface of the pri- maries, and frequently the ground color is darker. 2. MASTOR BELLUS Pamphila hellus Edw., Papilio iv, 57, 1884. Biol. , Ehop. n, 568, pi. 100, f. 36, $ gen., 1900. Skinner, Ent. News xi, pi. n, ff. 11, 12, 1900. Kellogg, Am. Ins. pi. ix, ff. 11, 12, 1904. Wright, Butt. W. Coast 247, pi. xxxi, f. 443, 1905. Arizona, May to July. 3. MASTOR PHYLACE PampMla phylace Edw., Field and Forest in, 117, 1878. Arizona, Colorado, New Mexico; June. 4. MASTOR OSLARI Pamphila oslari Skinner, Ent. News x, 112, 1899. New Mexico, Arizona, Colorado; April, June to August. Oslari is usually pale fuscous above, but occasionally a series will show some yellow fulvous scales on the disk of the primaries and a faint trace of indefinite spots such as are always present in A\ nanno. Such speci- mens may be separated from nanno by the gray under surface of the sec- ondaries with vague pale spots instead of small sharp ones. Genus AMBLYSCIRTES Scudder Amblyscirtes Scud., Syst. Rev. 54, (75), 1872. Type Hesperia vialis. Edw. Stomyles Scud., op. cit. 55 (76). Type Pyrgus textor Hbn. Palpi large, upturned; second joint with shaggy vestiture; third slender, smooth, vertical; almost as long as second except in nanno. An- tennae moderate; club large; apicu- lus longer than thickness of club. Primaries in most species similar in the two sexes, less apically produced than in the related genera; costa flattened; apex rounded-rectangu- lar; outer margin strongly rounded except toward anal angle; cell about three-fifths as long as wing; discocel- Fig. 29. Aribfyscirtes vialis Edw. a. lulars very weak and only slightly Club of antenna.^ Palpus, c. oblique. vein 5 weakly curved. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance o
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