14 Arachn. 
X. Arachnida. 
Colouration, Trilobita ; Raymond, 
187. 
General Morphology, Respiratory 
Organs, Musculature, Nervous System, 
Sense-organs, Alimentary Canal, Coxal 
glands, Limulus ; Versluys & Demoll, 
241. 
Development. — Limulus ; Versluys 
& Demoll, 241. 
Retrogressive changes, eyes of Trilo- 
bites ; Richter, 195. 
Physiology. — Swimming, ambulation, 
Trilobites ; Walcott, 255. 
Phylogeny and Systematics. — Trilo- 
bites ; Raymond, 188 ; Richter, 195 ; 
Walcott, 255; Olenidae ; Wester- 
gard, 263 ; Xiphosura, Trilobita ; 
Hanstrom, 96; Limulus ; Versluys 
& Demoll, 241. 
Systematics. — Harpes ; Richter, 
194. 
DISTRIBUTION. 
Uncert. Geol. System. — N. Sea, Tri- 
lobites ; Richter, 197. 
Cambrian. — Trilobita : — Sweden ; 
Westergard, 263 ; Indo-China; Man- 
sijy, 139; S. China; Yahe & Hata- 
saka, 267 ; W. America ; Wai.cott, 
254 ; N. S. Wales ; Mitchell, 150. 
Ordovician. — Trilobites : — Indo- 
China ; Mansuy, 142 ; S. China ; 
Yabe and Hatasaka, 267 ; Canada ; 
Parks, 172 ; Quebec ; Clark, 57. 
Silurian. — Trilobites : — Sweden ; 
Hede, 98; Munthe, 158; Wester- 
gard, 263 ; Norway ; Stormer, 227 ; 
Germany; Freyberc, 80; Wede- 
kind, 260 ; Bohemia ; KlouOek, 117 ; 
Zelizko, 269 ; Caucasus ; Yanish- 
evsky, 268. 
Devonian. — Trilobita : — Harpes ; 
Richter, 194 ; Li6ge, Prestwichia ; 
Straelen, 228 ; Holland ; Robert, 
198; Germany; Dahmer, 64; Rich- 
ter, 196; Weigelt, 261; Homalono- 
lus gigas ; Dahmer, 65 ; Rhine, new 
spp. ; Spriestersbach, 223; Coblenz ; 
Viktor, 242 ; Austria ; Heritsch, 
[1922] 
99 ; S. Devon ; Shannon, 215 ; Tur- 
key ; Huffner, 110 ; Indo-China ; 
Mansuy, 142, 143. New Proetus ; 
Mansuy, 141 ; new sp. ; Mansuy. 
140 ; Ellesmereland, Trilobites ; Hol- 
tedaiil, 106. 
Permian. — China, New Eurypterus ; 
Grabau, 88. 
Carboniferous. — Kimberley, S. 
Africa, Pygocephalus ; Woods, 266; 
Nova Scotia, new Merostome ; Bell, 
12 ; Ohio, Trilobita ; Morningstar, 
152 ; N. S. Wales, Trilobites ; Mitchell, 
150. 
Triassic. — Gottingen, Gigantostraca ; 
Lange, 122; Alps, Xiphosura ; Bub- 
nofe, 34. 
PANTOPODA. 
Bibliography : — Nervous system, 
phylogeny ; Hanstrom, 96. 
Classification : — Bouvier, 18 ; No- 
menclature, Parazeles auchenicus 
(Slater) ; Calman, 38. 
Phylogeny : — Hanstrom, 96. 
Structure : — Nervous system, optic 
ganglia ; segmentation ; Hanstrom, 
96. 
California, Pycnogonida ; Hilton, 
102 . 
ARACHNIDA 
(inch Tardigrada & Pentastomida). 
GENERAL, ECONOMICS. 
Bibliography. — Yorkshire spiders, p. 
331 ; Falconer, 77 ; Alpine Water- 
mites ; Walter, 256 ; Scorpions, 
British E. Africa ; Birula, 15 ; N. 
African fauna ; Seurat, 214. 
Correction to Matthews & Hobson, 
148; Lowndes, 128. 
Nomenclature. — Porter, 179 ; 
Strand, 229. 
Classification. — Tarsonemidae ; 
Ewing, 72; Acari; Kotlan, 119; 
Thor, 238 ; Linguatulidae ; Sambon, 
203. 
