36 Insacta. 
XI. Insecta. 
[1921] 
Harrison, J. W. H. vide Bagnall and 
Harrison. 
776. — Hartzell, A. Further notes on 
the life-history of the potato leafhopper 
( Empoasca mali Le Baron). J. econ. 
Ent. Geneva N.Y. 14 1921 pp. 62-08. 
[llomoptera.] 
777. — Harvey, E. J. Isle of Wight 
Disease in Hive Bees. (3) Experiments 
on Infection with Tarsonemus woodi, 
n. sp. Trans. R. Soc. Edinburgh 52 
1921 pp. 765-767. [Hyrnenoptera.] 
Harvey, E. J. vide Rennie, White and 
Harvey. 
778. — Harwood, P. Anthonomus 
cinctus Kollar in Britain. Ent. Mag. 
London 57 1921 p. 226. [ Coleo - 
ptera.] 
779. — Harwood, P. Aradus betulae 
L., an addition to the British Hemiptera- 
Heteroptera. Ent. Mag. London 57 
1921 pp. 227-229. 
780. — Hase, A. Zur Frage des 
“ Lebendiggebarens ” der Kleiderlaus. 
Centralbl. Bakt. Jena Ab. I 85 pp. 
377-379 1921. [ Anoplura .] 
781. — Hase, A. Bietrage zu einer 
Biologie der Kleiderlaus ( Pediculus 
corporis de Geer=vcstiment Nitzsch). 
Zs. angew. Ent. Berlin 2 1915 pp. 
265-359. [Anoplura.] 
782. — Hase, A. Ein Beitrag zur 
Fliegenplage. Zs. angew. Ent. Berlin 
3 1916 pp. 116-123. [Diptera.] 
783. — Hase, A. t)ber die Bekampfung 
der Bettwanzen ( Cimex lectularius L.) 
mittels Cyanwasserstoff (Blausaure). 
Zs. angew. Ent. Berlin 4 1918 pp. 
297-309. [Hemiptera.] 
784. — Hase, A. Die Bekampfung 
der Lause, Wanzen und anderer 
Parasiten ; insbesondere die Bekamp- 
fung mittels Blaus&ure. Verb. Deut. 
Gesell. angew. Ent. 5 1919 pp. 88-105. 
785. — Hase, A. Uber ein Massen- 
auftreten der Sclimeissfliege Calliphora 
vomitoria L. Zs. angew. Ent. Berlin 
5 1919 pp. 258-260. [Diptera.] 
786. — Hase, A. Die Bettwanze 
(Cimex lectularius L.) ihr Leben und 
ilire Bekampfung. Monog. z. angew. 
Ent. 1 Berlin 1917 144 pp. [Hemiptera.] 
787. — Hase, A. Beitrkge zu einer 
Biologie der Kleiderlaus ( Pediculus 
corporis de Geev—vestimenti Nitzsch). 
Flug. 1 Deut. Gessells. angew. Ent. 
Berlin 1915. [Anoplura.] 
788. — Hasebroek, K. Zum Gedacht- 
nis an August Selzer. Int. ent. Zs. 
Guben 15 1921 pp. 49-53. 
789. — Hasebroek, K. Die Dopoaxy- 
dase (Bloch) ein neues melanisierendes 
Ferment im Schmetterlingsorganismus. 
Biol. Centralbl. Leipzig 41 1921 pp. 
367-373 3 figs. [Lepidoptera.] 
790. — Hauser, G. Eine Berichtigung 
zu Apotomopterus cupreus G. H. Soc. 
Entomol. Stuttgart 36 1921 p. 24. 
[Coleoptera.] 
791. — Hauser, G. Die Damaster- 
Coptolabrus-Grwpipe der Gattung Cara- 
bus. Zool. Jahrb. Jena Abt. f. Syst. 
45 1911 pp. 1-394 plates i-ii. [ Coleo- 
ptera .] 
792. — Haviland, Maud D. The ex- 
perimental production of winged forms 
in an Aphid, Myzus ribis Linn. Ann. 
appl. Biol. Cambridge 8 1921 pp. 
101-104. [Homoptera.] 
793. — Hayes, W. P. Strigoderma 
arboricola Fab. — its life-cycle. Canad. 
Entom. Guelph 53 1921 pp. 121-125. 
[Coleoptera.] 
794. — Hearle, E. Some mosquito 
problems of British Columbia. Ann. 
Rep. Ent. Soc. Ont. Toronto 51 1921 
pp. 66-70. [Diptera.] 
795. — Hebard, M. Studies in the 
Dermaptera and Orthoptera of Colombia, 
second paper, Blattidae, Mantidae and 
Phasmidae. Trans. Amer. Ent. Soc. 
Philadelphia 47 1921 pp. 107-169 3 
plates. 
796. — Hebard, M. Mexican records 
of Blattidae ( Orthoptera ). Trans. 
Amer. ent. soc. 47 1921 pp. 199-220 
1 plate. 
797. — Hebard, M. The janeirensis 
group of the genus Euboriellia, with 
the description of a new species 
(Dermaptera). Trans. Amer. ent. soc. 
Philadelphia 47 1921 pp. 319-324 2 
plates. [Orthoptera.] 
798. — Hebard, M. South American 
Blattidae from the Museum National 
d’Histoire Naturelle, Paris, France. 
Proc. Acad. Nat. Sci. Philadelphia 
73 pp. 193-304 1921 (pp. 240-304 plates 
9-15 1922). [Orthoptera.] 
