[1921] 
XI. Insecta. 
Insecla. 23 
452. — Dietz, W. G. The impudica 
group of the Dipterous genus Tipula 
Linnaeus. Ann. Ent. Soc. Amer. 
Columbus Ohio 14 1921 pp. 1-14 1 pi. 
[ Diptera .] 
453. — Dietz, W. G. Description of 
two new species of the angustipennis 
group of the Dipterous genus Tipula L., 
with table of species. Ent. News 
Philadelphia 32 1921 pp. 299-302. 
454. — Dietz, W. G. A new species of 
Coptodisca. Canad. Entom. Guelph 53 
1921 p. 44. [lepidoptera.] 
455. — Dietze, K. Ueber die Fahig- 
keit, getrocknete Substanzen durch 
Ausscheiden einer Flussigkeit zum 
Aufsaugen losbar zu machen bei 
Augiades sylvanus Esp. Ent. Rundsch. 
Stuttgart 38 1921 p. 1. [Lepidoptera. ] 
456. — Dietze, K. Die Zuneigung zum 
Weissen bei einigen Weisslingen und 
Anderes aus der Lebensgeschichte der 
Pieriden. D. ent. Zs. Iris Berlin 33 
pp. 28-45 1919. [ Lepidoptera .] 
457. — Dietze, K. Ein Vorschlag, 
die Veranderungsmoglichkeit der Aber- 
rationen durch Formeln zu versinn- 
lichen, statt ihnen Namen zu geben ; 
nnter Versuchs weiter Anwendung auf 
den Kiefernspinnor, Dendrolimus pini 
L. I), ent. Zs. Iris Dresden 34 1920 
pp. 1-23. [ Lepidoptera .] 
458. — Di Majo, 0. Come de farfalle 
del Bombyx mori possone forare i 
bozzoli in condizioni anormali speri- 
mentali. Boll. Lab. Portici Portici 11 
1921 pp. 136-144. [ Lepidoptera .] 
459. — Distant, W. L. The Hetero- 
ptera of Indo-China. Entomologist 
London 54 1921 pp. 3-6 40-44 68 & 
69 164-169. 
460. — Dittrich, R. Yerzeichnis der 
bisher in Schlesien aufgeiundenen Hy- 
menopteren. Jahresheft ver. Insektenk. 
Breslau 13 1921 pp. 25-28. 
461. — Dodd, A. P. Notes and cor- 
rections on the Australian Procto- 
trypoidea, with descriptions of forty- 
five new species. Arch. Natg. Berlin 
Abt. A 80 Heft 9 1915 pp. 1-32. 
[Hymenoptera.] 
462. — Dodd, A. P. Two new Scelion- 
idae from Fiji. Arch. Natg. Berlin 
Abt. A 80 Heft 5 1914 pp. 161-162. 
[Hymenoptera.} 
463. — Dodd, A. P. Four new 
Proctotrypoid Egg parasites of Sugar 
Cane Insects in Java. Arch. Natg. 
Berlin Abt. A 80 Heft 5 1914 pp. 
162-164. [Hymenoptera.] 
464. — Dodd, A. P. A new chalcid 
parasite of Euthyrrhinus meditabundus. 
Bull. ent. Res. London 12 1921 p. 67. 
[Hymenoptera.] 
465. — Donisthorpe, H. Nabis lati- 
ventris Boh., a myrmecophilous insect. 
Ent. Mag. London 57 1921 pp. 136- 
138. [Heteroptera.] 
466. — Donisthorpe, H. Myrmeco- 
philous notes for 1920. Ent. Record 
London 33 1921 pp. 21-25. 
467. — Donisthorpe, H. Cionus woodi : 
a species of Coleoptera new to science, 
with a table and some remarks on the 
British species of Cionus. Ent. Record 
London 33 1921 pp. 64-66. 
468. — Donisthorpe, H. Gymnetron 
squamicolle Reittcr, a beetle* new to the 
britannic list. Irish Natural. Dublin 30 
1921 p. 135. [ Coleoptera .] 
469. — Doormann, G. Die Mechanik 
des Sprunges der Schnellkafer (Elater- 
iden). Biol. Centralbl. Leipzig 40 1920 
pp. 116-119 2 figs. [Coleoptera. | 
470. — Dorsselaer, R. van. Note sur 
quelques Dytiscides rares ou critiques 
de Belgique. Bull. ent. soc. Belg. 3 
1921 pp. 82-83. [Coleoptera.] 
471. — Dover, C. The enemies of 
Butterflies. J. Bombay Nat. Hist. 
Soc. 27 1921 pp. 642-643. [Lepidoptera.] 
472. — Dover, C. A note on the 
insect-eating habits of the Indian hornet 
( Vespa cincta). J. Bombay Nat. Hist. 
Soc. 27 1921 p. 960 fig. [Hymenoptera.] 
473. — Dover. C. The Moths of 
Barkuda island. Rec. Ind. Mus. Cal- 
cutta 22 1921 pp. 377-379. [Lepido- 
ptera.] 
474. — Dover, C. The Wasps and 
Bees of Barkuda island. Rec. Ind. 
Mus. Calcutta 22 1921 pp. 381-391. 
[Hymenopte)a.] 
475. — Dover, C. The Dipterous 
insects of Barkuda island. Rec. Ind. 
Mus. Calcutta 22 1921 pp. 393-396. 
