10 Insecta, 
XII. Insecta. 
[1919J 
Arthus, M. Recherches exp4rimen< 
tales sur le venin des abeilles. 0, R. 
Soo. Biol. Paris 82 1919 (412 and 413). 
[Hymenoftera.l 46 
Assmnth, J. Eine neue Hyyacera 
vom Bismarck- Archipel. ’s Graven - 
hago Tydsclir. Ent. 62 1919 (196-201) 
fig. {Dip ter a. ~\ ' > 47 
Ast, F. tlber den feineren Ban der 
Pacettenaugen bei Neuropteren. Zool. 
Jahi'b. Abt. Anat. 41 1919 (411-458) 
pis. xxvi-xxxiii). 48 
Aulld, M. Resena de los trabajos 
verificados por la comision de la fauna 
forestal Espanola durante el ano do 
1916. Bol. Soo. out, Espana Zaragoza 
2 1919 (19-28 46-47) 1 fig. 49 
Aull6, M. Observaciones sobre la 
variedad pallidus, establecida por 
D. M. M. de la Escalera, en la especie 
Myelophilus piniperda L. {Coleoptera 
Scolytidae.) Bol. Soo. Espan. Hist. 
Nat. Madrid 19 1919 (146, 147). 50 
Aulmann, G. Psyllidarum Catalogus 
Berlin (W. Junk) 1913 (1-92). 61 
Aurivillius, C. Wissenschaftliche 
Ergebnisse dei schwedischen entomo- 
logischen Reise des Herrn Dr. A. Roman 
in Amazonas 1914-1915. Ark. Zool. 
Stockholm 12 1919 No. 11 (1-7). 
[Coleoptera.} 52 
. Aurivillius, C. Gottfrid Agaton 
Adlerz. Ent. Tidskr. Uppsala 40 1919 
(65-71) portrait. 53 
Aurivillius, 0. Eine neue Papilio- 
Art. Ent. Tidskr. Uppsala 40 1919 
(177). [Lepidoptera.] 54 
Aurivillius, C. Svensk insektfauna. 
[Swedish insectfauna.] 9. Skalbaggar. 
Coleoptera. 1. Vaxtbaggar. Phyto- 
phaga. Uppsala 1917 Utg. av. Entomo- 
logiska foreningen i Stockholm (1-119) 
text-figs. 55 
Aurivillius, 0. Svensk insektfauna. 
[Swedish insectfauna.] 13. Uymeno- 
ptera. 1. Gaddsteklar. Aculeata. 
Fam. 3. Vespidae. 4. Scoliidae. 
5. Mutilidae. 6. Sapygidae. 2nd ed. 
Uppsala 1918 Utg. av. Entomologiska 
foreningen i Stockholm (151-182) text- 
figs. [Hymenoptera.} 55a 
Aurivillius, C. Svensk insektfauna. 
[Swedish insectfauna.] 2. Ratvingar. 
Orthoptera. 2nd ed. Uppsala 1918. 
Utg. av. Entomologiska foreningen i 
Stockholm (1-25) text-figs. 56 
Austen, E. E. Guide to the speci- 
mens and enlarged models of Insects 
and Ticks exhibited in the Central Hall 
illustrating their importance in the 
spread of disease. 2nd ed. 8vo. 
London 1919 (1-46) 14 figures. 57 
Auzat, V. Notes sur les variet^s et 
la nomenclature di Hololepta plana. 
Bull. Soc. ent. Franco Paris 1919 1919 
(199). {Coleoptera.} 58 
Ayyar, T. V. R. Some south Indian 
Cocci ds of economic importance. J. 
Bombay Soc. Bombay 26 1919 (621- 
628) 4 pis. [Homoptera.} 59 
Ayyar, T. V. R. Some foreign insect 
pests which wo do not want in India. 
Agric. J. Ind. Calcutta 14 1919 (500- 
511) 3 pis. 60 
Ayyar, T. V. R. A contribution to 
our knowledge of South Indian Coccidae. 
Bull. Agric. Res. Inst. Pusa 87 Cal- 
cutta 1919 (pp. 50 36 figs. 16 pis.). 
{Hemiptera.} 61 
B., F. 0. Prof. J. W. H. Trail, 
F.R.S. Nature London 104 1919 (76). 
62 
Back, E. A. How Weevils get into 
Beans. Yearbook U.S. Dept. Agric. 
1918 1919 (327-334) 3 pis. {Coleo- 
ptera.} 63 
Bacot, — . Experiments in colour- 
inheritance in Pediculus humanus. 
Proc. ent. Soc. London 1918 1919 
(clvii). {Ellipoptera.} 64 
Bacot, A. W. The fleas found on rats 
and their relation to plague. J. R. 
Sanitary Inst. London 11 1919 (53-60). 
{Aphaniptera.} 65 
Bacot, A. and Linzell, L. The incuba- 
tion period of the eggs of Haematopinus 
asini. Parasitol. Cambridge 11 1919 
(388-392). {Ellipoptera.} 66 
Bacot, A. and Talbot, G. The com- 
parative olfectivenoss of certain culici- 
fuges under laboratory conditions. 
Parasitology Cambridge 11 1919 (221- 
236). {Diptera.} 67 
Bagnall, R. S. Brief descriptions of 
new Thysanoptera x. Ann. Mag. nat. 
Hist. London 4 1919 (253-277). 68 
Bagnall, R. S. Talks about plant- 
galls, vi. The wasp galls of the british 
oak. Vasculum Hexham 5 1919 (127- 
134). {Hymenoptera.} 69 
