[1922] 
X. Arachnida. 
Arachn. 13 
258. — Warburton, C. Acarina 1 : 
Ixodidae, in Michaelson, W. Beitrage 
zur Kenntnis der Land- und Siisswasser- 
fauna Deutsch-Sudwestafrikas. Ergebn. 
Hamburg, deutsch-sudw. afrik. Studien- 
reise 1911 2 1921 pp. 91-93. 
259. — Watson, J. R. The bite of 
Latrodectes mactans. Science New York 
N.Y. 55 1922 p. 539. 
260. — Wedekind, R. Palaontolo- 
gische Beitrage zur Geologie des 
Keller waldes. Abb. K. Preuss. geol. 
Landesant. 69 1914 pp. 1-84 pis. i-v 
text-figs. 
261. — Weigelt, J. Die Gliederung 
und die Faunenverteiling im Unteren 
Culm des Oberharzes. Jarhb. geol. 
Landesant. Berlin 37 Pt. 2 1918 pp. 
157-271 pis. ix-xv. 
262. — Werner, F. II. Skorpione 
und Solifugcn aus dem Amanus- 
Gebirge, in Tolg, F. Fine naturwissen- 
schaftliche Studienreise in das Amanus- 
Gebirge (Aim an Dagh.). Arch. Natg. 
Berlin 85 A Hit. 8 1920 pp. 141-145. 
263. — Westergard, A. H. Sveriges 
Olenidskiffer. Sveriges geol. Unders. 
Ser. Ca 18 1922 pp. 1-188 pis. i- 
xvi text-figs. [English summary 
pp. 189-205.'] 
264. — Wickware, A. B. An unusual 
form of scabies in fowls. J. Parasitol. 
Urbana 8 1922 pp. 90-91. 
265. — Willmann, C. Eine neue 
Oribatide aus Ostpreussen. Schr. 
physik. Ges. Konigsberg 58 1918 
pp. 10-13 text-figs. 
266. — Woods, H. Note on Pygo- 
cephalus from the Upper Dwyka shales 
of Kimberley. Trans. Geol. Soc. S. 
Africa Johannesburg 25 1922 pp. 41-42 
pi. vi. 
267. — Yabe, H. and Hatasaka, I. 
Palaeontolog}' of Southern China. 
Reports Geography Research in China 
1911-1916. Tokyo (Geograph. Soc.) 
1920 pp. 1-221. 
268. — [Yanishevsky. M.] Him men- J 
civiii, M. 0 TpHjiodirrax'b n mo.mio- 
CKax'b Bepxiiaro cmiypa Kaunasa. [On 
some representatives of the Upper 
Silurian Fauna of the Caucasus.] Ann. 
soc. pal. Russ. Petrograd 2 1918 pp. 
47-63 pi. ii. [English resume p. 63.] 
269. — Zelizko, J. V. Neue unter- 
silurische Fauna von Rozmital in 
Bohmen. Bui. Intern. Acad. Prague 
21 1917 pp. 194-197 figs. 
270. — Zuelzer, M. Uber Entwick- 
lung und Verwandtschaftsbezeihungen 
von Argos persicus. Verh. D. zool. 
Ges. 26 1921 pp. 67-69. 
II.— SUBJECT INDEX. 
N.B . — The number in Clarendon, when 
not referring to a Volume , refers to 
the list of Titles. 
ARACHNIDA (GENERAL.) 
Bibliography. — Arachnid structure 
and phylogeny ; Han strom, 98. 
Expedition. — “ Fram,” Trilobita ; 
Holtedahl, 106. 
Structure. — Circulatory system ; 
Petrunkevitch, 177 ; Nerve elements, 
nervous system ; Hanstrom, 96 ; 
Segmentation; Hanstrom, 96; Im- 
portance of circulatory system in deter- 
mination of segmentation ; Petrun- 
kevitch, 177. 
Phylogeny. — Arachnid groups ; Han- 
strom, 96 ; Circulatory system as 
guide to Phylogeny ; Petrunkevitch, 
177. 
GIGANTOSTRACA. 
GENERAL. 
Bibliography. — Limulus and its 
affinities ; Versluys & Demoll, 241. 
Structure.— Raymond, 188 ; Harpes ; 
Richter, 194 ; Neolenus ; Walcott, 
253 ; Phacops ; Wedekind, 260. 
Appendages. — From unknown Tri- 
lobite ; Clark, 57 ; thoracic, Trilo- 
hites; Walcott, 255 ; Harpes; Rich- 
ter, 194 ; Eyes, Trilobites ; Richter, 
194, 195. 
Internal organs, Trilobites ; Wal- 
cott, 255. 
Fossil chitin ; LengerkeN, 123. 
