70 Insecta. 
XII. Insecta. 
[1917] 
Williams, C. B. Some problems of 
sex ratios and parthenogenesis. J. 
Genetics Cambridge 6 1917 (255-267). 
[Homoptera.] 1425a 
Williams, C. B. Some notes on 
butterfly migrations in British Guiana. 
Tr. ent. Soc. London 1917 1917 (154- 
164) map. ( Lepidoptera .] 1426 
Williams, C. B. Notes on a frog- 
hopper attacking sugar-cane at Marien- 
burg estate, Surinam. Bull. ent. Res. 
London 7 1917 (271-272). [ Homoptera .] 
1427 
Williams, C. B. A new thrips damag- 
ing orchids in the West Indies. Bull, 
ent. Res. London 8 1917 (59-61) 
[Thysanoptera.] 1428 
Williams, F. X. Notes on the life- 
history of some north-american Lam- 
pyridae. J. N. York ent. Soc. 25 1917 
(11-33). [ Coleoptera .] 1429 
Williamson, E. B. An annotated list 
of the Odonata of Indiana. Univ. 
Michigan Mus. Publ. 2 Ann Arbor 1917 
(1-13). [ Paraneuroptera .] 1430 
Williamson, E. B. The genus 
Neoneura. Tr. Amer. ent. Soc. 43 
1917 (211-246) pis. ix-xix. [ Para - 
neuroptera .] 1431 
Williamson, E. B. Some species 
of Leptagrion with descriptions of a 
new genus and a new species. Ent. 
News Philadelphia 28 1917 (241-254) 
pis. xvii & xviii. [Paraneuroptera.] 
1432 
Williston, S. W. Camptopelta, a 
new genus of Stratiomyidae. Ann. 
ent. Soc. Amer. Columbus 10 1917 (23- 
26). [ Diptera .] 1433 
Wilson, H. F. Plant lice attacking 
orchard and bush fruits in Oregon. 
Agric. Exp. Sta. Oregon Corvallis 
Rep. 1911-12 1913 (81-96) pis. i-iv. 
[ Homoptera .] 1434 
Wilson, H. F. The shot hole borer 
of the northwest ; or the pear blight 
beetle of the east. ( Xyleborus dispar 
Fabricus.) Agric. Exp. Sta. Oregon 
Corvallis Rep. 1911-12 1913 (97-107) 
ff. 1-7. [ Coleoptera .] 1435 
Wilson, H. F. Codling-moth. 
( Carpocapsa pomonella Linn.) Agric. 
Exp. Sta. Oregon Corvallis Rep. 1911- 
12 1913 (108-111) pi. vi. [ Lepidoptera .] 
1436 
Wilson, H. F. The San Jose scale 
( Aspidiotus perqiciosus Comm. ). Agric. 
Exp. Sta. Oregon Corvallis Rep. 1911- 
12 1913 (112-115) pis. vii viii ; ff. 8 9. 
[Homoptera.] 1437 
Wilson, H. F. Tent caterpillars. 
Malacosoma spp. Agric. Exp. Sta. 
Oregon Corvallis Rep. 1911-12 1913 
(116-117). [Lepidoptera.] 1438 
Wilson, H. F. The cherry and pear 
slug. ( Galiroa cerasi Linn.). Agric. 
Exp. Sta. Oregon Corvallis Rep. 1911— 
12 1913 (118-121) ff. 10-13. [Hymeno- 
ptera.] 1439 
Wilson, H. F. and Lovett, A. L. 
Miscellaneous insect pests of orchard 
and garden. Agric. Exp. Sta. Oregon 
Corvallis Rep. 1911-12 1913 (147-165) 
ff. 19-34. 1440 
Wirtner, M. A new genus of Bothy- 
notinae Miridae. Ent. News Phila- 
delphia 28 1917 (33-34). [Heteroptera.] 
1441 
Wodsedalek, J. E. Five years of 
starvation of larvae. Science New York 
46 1917 (366). [Coleoptera.] 1442 
Wolden, B. O. The white admiral or 
banded purple butterfly in Iowa. Des 
Moines Proc. Iowa Acad. Sci. 23 1916 
(269). [Lepidoptera.] 1442a 
Wright, W. S. Notes and descrip- 
tions of Geometridae. J. N. York ent. 
Soc. 25 1917 (123-125). [Lepidoptera.] 
1443 
Yagi, M. vide Harukawa and Yagi. 
Yamada, S. Nipponsan bunkwa no 
ni shinshu. [On two new species of 
Japanese Culicidae.] Dobuts. Z. Tokyo 
29 1917 (61-72). (Diptera.] 1444 
Zappe, M. P. Egg-laying habits of 
Diprion simile Hartig. J. econ. Ent. 
Concord 10 1917 (188-190). [llymeno- 
ptera.] 1445 
Zeck, E. H. vide Musgrave & Zeck. 
Zeehandelaar, A. vide Bernard, Ch. 
Zimmermann, A. Der derzeitige 
Bestand der Gyrinidensammlung des 
deutschen entomologischen Museums 
in Berlin-Dahlem und die wissenschaft- 
lichen Ergebnisse ihrer Durcharbeitung. 
Ent. Mitt. Beriin 6 1917 (135-170) 
pi. vi. [Coleoptera.] 1446 
