18 Arachn c 
X. Arachnida. 
[1922] 
MYRIOPODA. 
GENERAL. 
Bibliography. — N. African Myria- 
poda; Brolemann, 31; Eossil Myria- 
pods ; Naday, 160 ; Chilian Myrio- 
poda ; Porter, 180. 
Nomenclature. — Brade-Birks, 20. 
Collection. — Mus. Hist. Nat., Va- 
lencia ; Garcia, 82. 
Economics. — Myriapods in arable 
soil ; Morris, 154. 
STRUCTURE. 
Head segments, Scolopendrella, com- 
pared with Diplopods, and Insects ; 
Becker, 11. 
Heart and blood system, Lilhobius ; 
Biegel, 14. 
Female genital organs, Paraiulidae ; 
' Brolemann, 25; Appendages, anglo- 
coxite, colpocoxite, acropodite, arma- 
ture, walking legs, Lithobiidae ; Ri- 
BAUT, 192, 193. 
Histology : — Heart and bloodsystem, 
Lilhobius ; Biegel, 14. 
PHYSIOLOGY. 
Nervous control of movement, lulus ; 
Comes, 59. 
DEVELOPMENT. 
Spermatogenesis, Scolopendrg; Boijin, 
17. 
Larval stages, Lilhobius ; Biegel, 
14. 
Heart and blood system, Lilhobius ; 
Biegel, 14. 
ETHOLOGY. 
Habits. — Food, Diplopoda ; Krausse 
120; Feeding and hunting, Lilhobius ; 
Britten, 24; Migrations, Diplopoda; 
Brade-Birks, 21. 
Habitats. — In arable soil ; Morris, 
154 ; Cavemicolous ; Silvestri, 216. 
VARIATION. 
Armature, walking-legs, Lithobiidae ; 
Ribaut, 193, 
Phylogeny. — Comparison of head 
segments, Scolopendrella , Diplopods 
and Insects ; Becker, 11 ; Principle 
of contraction as opposed to elonga- 
tion, Diplopods ; Brolemann, 30. 
. DISTRIBUTION. 
Geographical. 
Europe. — Denmark ; Skovgaard, 
220; Grt. Britain, Diplopoda ; Bag- 
nall, 6 ; Lancashire, Polyxenus lacfu - 
rus ; Bagnall, 7 ; France ; Brole- 
mann, 27, 28; Ribaut, 192; new 
Cryptops ; Brolemann, 26 ; S. France, 
new Polydesmus ; Brolemann, 29 ; 
Liguria ; Silvestri, 216. 
Asia. — Carl, 41 ; Persia ; Brole- 
mann, 32 ; Mesopotamia ; Brole- 
mann, 32. 
Africa. — N. Africa ; Brolemann, 
31 ; S.W. Africa ; Attems-Petzen- 
stein, 4. 
North America. — Gosibiidae ; Cham- 
berlin, 42; Lithobiidae; Chamber- 
lin, 43; Julklae and Nemasomidae ; 
Chamberlin, 48; Alberta, Can., new 
Paobius ; Chamberlin, 44 ; Florida 
Keys, Polyxenus bartschi ; Chamber- 
lin, 46; Central America, Centipeds ; 
Chamberlin, 51 ; Millipeds ; Cham- 
berlin, 52 ; Mexico, new gen. Chilo- 
poda; Chamberlin, 54; West Indies, 
Millipeds; Chamberlin, 53. 
S. America. — British Guiana, Tricho - 
nannolene guiananus ; Chamberlin, 45. 
New Zealand. — Chilopoda ; Archey, 
1, 2. 
Pacific. — Hawaii, new sp. of Meci - 
stocephalus ; Chamberlin, 55. 
Geological. 
Pliocene. — Hungary ; Naday, 160. 
PROTOTRACHEATA. 
Bibliography. — Chilian Onyohophora; 
Porter, 181. 
Histology. — Infracerebral organs, 
Peripatus ; Dakin, 66. 
Physiology. — Infracerebral organs, 
Peripatus ; Dakin, 66. 
Distribution, geographical. — S. hemi- 
sphere, Peripatus ; Barnard, 9 ; Peru, 
New Peripatus ; Brues, 33 ; N. 
Guinea, New Peripatus ; Horst, 107. 
