BIBLIOGRAPHY OF ECONOMIC ENTOMOLOGY. 
183 
1408. Riley, C. Y. Bad-eating insects. <Cnltivator and Country 
Gentleman, 25 March, 1875, v. 40, p. 183. 
Habits, food-plants, and means against Agrotis scan dens ; means against field 
cut-worms. 
1409. Riley, C. Y. Description of a new species of Agrotis. <Proc. 
Bost. Soc. Nat. Hist., March, 1875, v. 17, pp. 286-288. 
Description of Agrotis morrisoniana n. sp. [p. 286]. 
1410. Riley, C. Y. On the summer dormancy of the larva of Phyciodes 
nycteis , Doubleday, with remarks on the natural history of the 
species. <Proc. Amer. Assoc. Adv. Sci. for 1874, 4 June, 
1875, v. 23, pp. 108-112. Separate: <Salem, Mass., March, 
1875, pp. 108-112. Abstract: <Hartford [Conn.] Daily Cou- 
rant, 18 August, 1874, No. 11162, v. 38, No. 197, p. 2. See: 
<N. Y. Tribune Extra : Lecture and Letter series, No. 21, Au¬ 
gust, 1874, p. 75. 
Observations on Phyciodes nycteis and Argynnis bellona ; significance of the 
same; detailed description of the larva and pupa of P. nycteis. 
1411. Riley, C. V. Descriptions of two new moths. <Traus. Acad. 
Sci. St. Louis, 1 Eebruary [March], 1875, v. 3, pp. 240-242, tigs. 
12-13. 
Descriptions and figures of Xanthoptera [— Exyra~\ ridingsii n. sp. and Cerura 
multiscripta n. sp. 
1412. Riley, C. Y. The climate for Doryphora. <N. Y. Tribune, 2 
April, 1S75. S.-b. No. 10, p. 16. 
Comments on letter from D. L. Garver; Doryphora decemlineata would be 
likely to thrive as well in the climates of Europe as in North America ; its 
transportation across the ocean is not improbable. 
1413. Riley, G. Y. [On an Aeridium eaten out by ants.] <Trans. 
Acad. Sci. St. Louis, 6 April, 1875, v. 3, p. 102 Proc. 
Verbal communication ; inner soft parts of an Aeridium, americanum eaten out 
by Myrmica minuia. 
1414. Riley, C. Y. [On the chrysalis of Pronuba yuccasella.] <Trans. 
Acad. Sci. St. Louis, 6 April, 1875, v. 3, p. 106 Proc. 
Verbal communication; adaptation of pupa of Pronuba yuccasella to its needs 
of prying its ways through the soil. 
1415. Riley, C.V. [On regulating sex in insects.] <.Trans. Acad. Sci. 
St. Louis, 6 April, 1875, v. 3, p. 108 Proc. 
Verbal communication; critical review of Mrs. Treat’s “Controlling sex in 
butterflies” ; female iusects need more nourishment than the males, but sex 
is determined in all animals at conception. 
1416. Riley, C.Y. [On the peculiarities of Nephilaplumipes.] <Trans. 
Acad. Sci. St. Louis, 6 April, 1875, v. 3, p. 109 Proc. 
Verbal communication ; comparison of the structure of male and female Xe- 
phila plumipes ; habits and silk-production of the female. 
1417. Riley, C. Y. [On the peculiarities of the Mexican honey-ant.] 
<Trans. Acad. Sci. St. Louis, 6 April, 1875, v. 3, p. 109 Proc. 
Verbal communication ; structural and functional division of the neuters of 
Myrmecocystus mexicanus into two distinct kinds. 
