12 Arachn. 
XI. Arachnida. 
[1920] 
Fraser, F. C. Spiders as checks on 
lepidopterous larvae. Kept. Proc. 
Third Ent. Meeting Pusa 1919 3 1920 
(898-900). 46 
Froggatt, W. W. Orohard and 
Garden Mites, No. 1, Blister Mites 
(Family Eriophyidae). Agric. Gaz. 
Sydney N.S.W. 31 1920 (577-580) fig. 
47 
Frost, S. W. The imported Red 
Spider ( Paratetranychus pilosus Can. 
& Fanz.) attacking apple foliage. J. 
Econ. Ent. Concord. N. H. 12 1919 
48 
Fryer, P. J. Mites [and] Red Spiders 
in Insect Pests and fungus diseases of 
Fruit and Hops. - Cambridge 1920 
(367-379). 49 
Gimbel, O. Beitrage zur Kenntnis 
der Meeresfauna Westafrikas. Heraus- 
gegeben von W. Michaelsen. Hamburg 
3 1920 (1-12) figs. 50 
Glendenning, R. Some notes on the 
Eriophyidae (Acarina) in British 
Columbia. Canad. Entomol. London 
Can. 52 1920 (136). 51 
Goosman, F. t)ber eino nouo Milbe 
( Raping na thus pi lispinus Gsm . ) . 
Bremen Abh. naturvv. Ver. 24 1919 (75- 
76) text- figs. 52 
Halbert, J. N. The Acarina of the 
Sea-shore. Dublin Proc. R. Irish Acad. 
35 1920 (106-152) pis. xxi-xxiii. 53 
Hall, M. C. Parasites and Parasitic 
diseases of Sheep. Washington D.C. 
U.S. Dept. Agric. Farm. Bui. 1150 1920 
(1-13) figs. 54 
Harrison, J. W. H. vide Bagnall, R. S. 
H. E. C. Moeurs des araignees 
chilennes. I. — Les fils d’automne. 
Rev. chileha Santiago 23 1919 (18-23) 
pi. i. 55 
Hindle, E. The transmission of 
Spirochaeta duttoni. Bulawayo Proc. 
Rhod. Sci. Ass. 11 1912 (124-138). 56 
Hingston, R. W. G. A Naturalist in 
Himalaya. London 1920 (82-163) 
plates, text-figs. 57 
Hirst, S. Notes on Acari parasitio on 
birds, with descriptions of two new 
species. Ann. Mag. Nat. Hist. London 
Ser. 9 6 1920 (121-122). 58 
Hirst, S. Species of Arachnida and 
Myriapoda . . . injurious to Man. 
British Museum (Natural History) 
Economic Series No. 6 2nd edit. 1920 
(60 pp.) text-figs. 59 
Hirst, S. Revision of the English 
species of Red Spider (genera Te- 
tranychus and Oligonychus). London 
Proc. Zool. Soc. 1920 (49-60) figs.* 60 
Hogg, H. R. VI. Spiders. Collected 
in Korinchi, West Sumatra, by Messrs. 
H. C. Robinson and C. Boden Kloss. 
J. Fed. Malay Mus. Kuala Lumpur 8 
1920 (81-106) pis. vii-xii. 61 
Hogg, H. R. Some Australian 
Opilionos. London Proc. Zool. Soc. 
1920 1920 (31-48) pis. i-iii. 62 
Holmgren, N. Zur Ontogenio der 
Stomodealbriicke bei den Spinoen- 
tieren. Ark. Zool. Stockholm 13 
No. 1 1920 (1-9) text-figs. 63 
Hull, J. E. The Spider family 
Linyphiidae : an essay in taxonomy. 
Vasculum Sunderland 6 1920 (7-11). 64 
Hull, J. E. Blackwall’s Spiders of 
Groat Britain and Ireland. Vasculum 
Sunderland 6 1920 (29-32). 65 
Imes, Marion. Hog lice and Hog 
mange. Methods of control and 
eradication. Washington D.C. U.S. 
Dept. Agric. Farm. Bui. 1085 1920 
(5-13). 66 
Johnson, W. F. Halictus rubi - 
cundus and Lycosa picta. Irish Nat. 
Dublin 29 1920 (89-91). 67 
Klugh, A. B. A spider now to 
Canada. Ottawa Canad. Field 
Naturalist 34 1920 (100). 68 
Koenike, F. Beitrag zur Kenntnis 
der Wassermilbengattung Lebertia 
Neum. Arch, hydrobiol. 12 1918 (373- 
421) (562-692) pis. vii-x text-figs. 69 
Koenike, F. Zur Kenntnis einiger 
Thyas-suten. Bremen Abh. naturw. 
Ver. 24 1919 (77-120) text-figs. 70 
Koenike, F Eine Wassermilbe als 
Gast bei einem Wasserkafer. Bremen 
Abh. naturw. Ver. 24 1920 (521-524) 
text-figs. 71 
Koenike, F. t)ber einige Arton der 
Wassormilbonfamilio dor Hygrobatiden. 
Bromon Abh. naturw. Ver. 24 1920 
(525-550) text-figs. 72 
