2 Araclm, 
X. Arachnida— Gigantostraca. 
[1921] 
GIGANTOSTRACA. 
I.— TITLES. 
1. Br0gger, W. C. “ Eocambrium.” 
“ Kjerulfia lata” Norsk geol. Tiddsskr. 
Kristiania 5 1920 pp. 378-380. 
2. Cayeux, L. Introduction k 
l’etude petrographique des roches s6di- 
mentaires. Mem. Carte geol. detaillee 
France 1916 pp. 443-449 pi. xliii. 
Cowper-Reed, F. R. vide Gardiner, 
C. I. 
Demoll, R. vide Versluys, J. 
3. — Edwards, D. J. Segmental 
activity in the heart of the Limulus. 
Amer. J. Physiol. Baltimore 52 1920 
pp. 276-283. 
4. — Gardiner, C. I. and Reed, F. R. 
Cowper. The Silurian rocks of May 
Hill. With an appendix on two Trilo- 
bites. Proc. Cotteswold Nat. F. Cl. 
Gloucester 20 1921 pt. 3 pp. 185-222 
figs. \ 
5. — Heritsch, F. t)ber eine Dal- 
mania aus den Devonscliichten von 
Tal bei Graz. Centralbl. Min. Stutt- 
gart 1920 pp. 307-314 text-fig. 
6. — Kloucek, C. Nalez trilobitu v dja. 
[Trilobitenfund in d^.] Sitzber. 
Bohm. Ges. Wiss. Prag 1914 1914 5 pp. 
7. — Kloucek, C. Neues iiber die 
Krusnahora-Schicliten (d,a). Senc- 
kenbergiana Frankfurt-a-M. 3 1920 
1921 pp. 55-58. 
8. — Leidhold, C. Devon-fossilien von 
der bithynischen Halbinsel (Kleinasien). 
Zs. D. geol. Ges. Berlin 69 A 1917 
pp. 308-347 pis. xi-xiii. 
9. — Loeb, L. On the precipitins in 
bloodsera of Arthropods. J. Med. Res. 
Boston 42 1921 pp. 2G9-275. 
10. — Mailleux, E. Presence du Tro- 
pidocoryphe barroisi dans le Couvinien 
superieur des environs de Hotton. Bui. 
soc. geol. paleont. hydr. Bruxelles 31 
1921 p. 22. 
11. — Raymond, P. E. A contribution 
to the description of the fauna of the 
Trenton group. Mus. Bui. Ottawa 31 
1921 pp. 1-64 pis. ix-xi. 
Reed, F. R. Cowper vide Gardiner, 
C. I. 
12. — St0rmer, L. Om nogen fossil- 
fund fra etage 3aa ved Vaekkero, 
Kristiania. Norsk geol. Tidsskr. Kris- 
tiania 6 1920 pp. 1-15 pis. i-ii text-figs. 
13. — Versluys, J. and Demoll, R. Die 
Verwandtschaft der Merostomata mit 
den Arachnida und den anderen 
Abteilungen der Arthropoda. Proc. 
Sci. K. Akad. Wet. Amsterdam 23 1921 
pp. 739-765 text-figs. i 
14. — Walter, O. T. Upper Cambrian 
Trilobites. Bui. Geol. Soc. Amer. New 
York 32 1921 p. 128. 
15. — Wilson, Alice E. The range of 
certain Lower Ordovician faunas of the 
Ottawa valley with descriptions of some 
new species. Mus. Bui. Ottawa 33 
1921 pp. 19-57. 
II.— SUBJECT INDEX. 
N.B. — The number in Clarendon , when 
not referring to a Volume, refers to 
the list of Titles. 
GENERAL. 
Petrographical appearance, Trilobita, 
Cayeux, 2. — Heart, Limulus, Ed- 
wards, 3. — Precipitins of blood sera, 
Limulus, Loeb, 9. — Segmental activity, 
Heart, Limulus, Edwards, 3. — Meros- 
tomata, relation to Arachnids, Ver- 
sluys & Demoll, 13. 
DISTRIBUTION. 
Geological. 
Cambrian. — Norway, Kjerulfia lata, 
Brooder, 1. — Bohemia, Kloucek, 6. — 
Iowa, Walter, 14. 
Ordovician. — Kristiania, Stormer, 
12 ; Trenton, Ontario and Quebec, 
Raymond, 11 ; Wilson, 15. 
Silurian. — Cotswolds, Lichas maia, 
Calymene, Gardiner & Reed, 4 ; 
Bohemia, Kloucek, 7. 
Devonian. — Upper Couvinien, Bel- 
gium, Tropidocoryphe barroisi, Mail- 
leux, 10 ; Austria, Dalmania, Her- 
itsch, 5 ; Asia Minor, Leidhold, 8. 
