6 Araehn 
[1913] 
XI. Arachnida— Gigantostraca. 
Silurian. 
N. America, Trilobita spp. n. ; 
Barton, 2 : Trilobita spp. n. ; Raymond 
& Barton, 21. 
Devonian. 
Mahren, Trilobita ; Reme§, 22 : 
Maryland, Trilobita ; Clarke & 
Swartz, 4 : Brazil, Trilobita spp. n. ; 
Clarke, 3 : Bolivia, Trilobita spp. n. ; 
Groth, 9. 
Lower Devonian, Maryland, Trilo- 
bita spp. n. ; Ohern & Maynard, 13. 
Middle Devonian, Maryland, Trilo- 
bita sp. n. ; Prosser & Kindle, 14. 
Oberdevon, Europe, Trilobita spp, 
n. ; Richter, 23. 
Frasnienne infdrieure, Namur, I'rilo- 
lita ; Asselbergs, 1. 
III.— SYSTEMATIC INDEX = 2831 
t TRILOBITA. 
Cambrian, China, descr. and figs, of 
many spp., including those described 
by the author in 1905, Walcott Car- 
negie Inst. Pub. No. 54 (Research in 
China) 3 pp. 99-224 figs. — Upper 
Paleozoic, China, Girt? Carnegie Inst. 
Pub. No. 45 (Research in China 3) 
pp. 295-334 pis. xxvii-xxix. — Devonian, 
Brazil, &c., Clarke Servi 90 Ceol. 
Brasil Monogr. 1 pp. 89-159 figs. — 
Nomenclature, Raymond Ottawa Nat. 
26 p. 137 ; op. cit. 27 p. 2G. 
Agraulos spp., Cobbold London 
Q. J. Geol. Soc. 69 p. 31 figs. 
Amphilichas rhinoceros p. 58 pi. xv 
ff. 5-6, clermontensis p. 59 pi. xv f. 7, 
spp. n., Iowa Ordovician, Slocom 
Chicago Field Mus. Nat. Hist, Pub. 
Geol. Ser. 4. 
Ampyx sp .,clavifrons sp. n. Schweden 
Oraovicium, Haddino Lund Univ. 
Arsskr. N.F. 9 Afd. 2 No 15 p. 73 figs. 
Asaphus sp. Schweder Ovdovicium, 
Hadding t.c. p. 70 fig 
Baihyums revision p. 51, johnstoni 
p 53, acutus p. 56, ingalli p. 57, figs., 
spp. n., Canada, Raymond Ottawa 
Geol. Surv. Victoria Memorial Mus. 1. 
Brachyaspis altilis [sp. n.], Raymond 
t.c. p. 47 figs. 
Bronteus flabellifer, Asselbergs 
Bruxelles Bui. Soc. geol. 26 p. 38 fig. 
Bumastus beckeri sp. n. p. 54 pi. xiv 
ff. 1-4, IoAva Ordovician, Slocom 
Chicago Field Mus. Nat. Hist. Pu,b. 
Geol. Ser. 4. — B. billingsi , Raymond 
Ottawa Geol. Surv. Victoria Memorial 
Mus. 1 p. 34 fig. 
Callavia eucharis p. 315, perfecta 
p. 315 figs, spp. n., Alberta, Cambrian, 
Walcott Smithsonian Inst. Misc. 
Collect. 57. 
Calmonia gen. n. p. 119, signifer 
p. 121, with var„ n. micrischia p. 124, 
subseciva p. 126, figs., spp. n., Devonian 
Brazil, Clarke Servi^o Geol. Brasil 
Monogr. 1. 
Calymenc fayettensis p. 67 pi. xvi 
ff. 8-9, gracilis p. 69 pi. xviii f. 9, 
spp. n., Iowa, Ordovician, Slocom 
Chicago Field Mus. Nat. Hist. Pub. 
Geol. Ser. 4. 
Ceraurinus gen. n. near Cheirurus 
p. 548, type marginatus p. 550, trenlo- 
nensis p. 552, confluens p. 555, figs., 
spp. n., Silurian N. America, Barton 
Bull. Mus. Comp. Zool. Harvard 54. 
Ccraurus clginensis sp. n. p. 73 pi. xvii 
ff. 4-5 Iowa, Ordovician, Slocom 
Chicago Field Mus. Nat. Hist. Pub. 
Geol. Ser. 4. — C. revision of American 
spp. p. 525, dentatus p. 534, granulosus, 
bispinosus p. 536 figs., spp. n., Silurian, 
N. America, Raymond & Barton 
Bull. Mus. Comp. Zool. Harvard 54. 
Colymbus gen. n. lovisae sp. n. 
Schweden Ordovicium, Hadding Lund 
Univ. Arsskr. N.F. 9 Afd. 2 No. 15 
p. 79 figs. 
Conocoryphe aequalis, bufo, p. 32, 
impressa p. 33 figs., Cobbold London 
Q. J. Geol. Soc. 69. 
Cryphaeus australis Brazil p. 108a, 
allardycecte Falkland Ids. p. 114 figs., 
spp. n., Devonian, Clarke Servi^o 
