Q^vachn. XI. Ai'&c^nida. 
Cambrian. 
N. America, Trilobita spp. , n. ; 
Walcott, <31: New York, Trilobita spp. 
it. ; Walcott, 32: Victoria, Trilobita 
spp. n.; Chapman; 4. 
Middle Cambrian, County 1 Wicklow, 
Trilobita, Eurypterida; Ryan & Halissy, 
26 : British Columbia, 'Trilobita spp. n., 
Aglaapina (vide Xiphoaura etc.) spp. n. ; 
Walcott) 29. 
Ordovician. 
British Columbia, Trilobita sp. n. ; 
Walcott; 30. 
Arenig. Haverfordwest, Trilobita ; 
Beed, 21. 
Silurian . 1 
Kashmir, Trilobita sp. n. ; Reed, 24. 
Victoria, Trilobita ; Chapman, 6. 
Untersilur Bohmens, Trilobita spp. 
n. ; Holuto, 11, 12. 
Gediauien inferieur, Ardenne, Trilo- 
bita ; Leriche, 14. 
Devonian. 
Europe, Dechenella ( Trilobita ) spp. 
n. ; Richter, 25 : Belgium, Trilobita ; 
Asselbergs, 1: Centr. Asiatic Russia, 
Trilobita ; Nachimson, 19 ; Chitral, 
Trilobita sp. n. ; Reed, 23. 
Oberdevon, Oberharz, Trilobita sp. 
n. ; Born, 3. 
Mitteldevon, Marburg, Trilobita ; 
Herrmann, 9. 
Carboniferous. 
Nebraska, Eurypterida ; Barbour, 2 : 
Spitzbergen, Trilobita ; Holtedahl, 10. 
Coal-measures, Derbyshire and 
Nottinghamshire, Xiphosura, Eury- 
pterida ; Moysey, 16. 
Anthracolithic, Shan States, Trilobita 
sp. n. ; Diener, 7. 
Pennsylvanian, Oklahoma, Trilobita 
sp. n. ; Girty, 8. 
III.— SYSTEMATIC INDEX = 2831 
t TRILOBITA. 
Middle Cambrian, County Wicklow, 
Ryan & Halissy Dublin Proc. R. Irish 
-Gigantostraca. [1912] 
Acad. 29 B p. 247 fig. —Tracks, Walcott 
Smithsonian Inst . ' Misc. Collect. 57 
pp. 275-304 pis. xlvi-xlix. i 
Acaste doicnihgiae, Leriche Mem. 
Mus. Belgique 6 p; 47 figs. ' 
Acidaspis aracana sp. h. Devonian, 
Bolivia, Stienmann’ k Hoejc N. Jahrb. 
Min. 34 p. 206 figs.— A\ ' kaehmirica 
sp. n. Silurian Kashmir, Reed Rec. 
Geol. Surv. Calcutta 42 p. 18 figs. 
Aeglina broggeri Untersilur Bohmen, 
sp. n., Holub, Prag Rozpr. Ce$k6 Ak. 
Frant. Jos. 21 1912. No. 33 pp. 7-8 and 
Prag Bull. Ac. Sci. Franc.' Jos. 17 p. 353 
fig. ' i! ' Mi ' 1 1 
Agnoatua auatralienaia sp, n. Cambrian 
Victoria, Chapman Melbourne Proc. R. 
Soc. Viet. 23 p. 314 figs. — A. bolivianua 
sp. n. Camb.-Silur, Bolivia, Stienmann & 
Hoek N Jahrb. Min. 34 p. 212 fig. — A. 
aplendena p. 5. conaora p. 6 fig. spp. n. 
Untersilur, Bohmen, Holub Prag Rozpr. 
fteske Ak. Frant. Jos. 21 1912 No. 33, 
and Prag Bull. Ac. Sci. Franc. Jos. 17 
p. 353 fig 
Agraidoa aaratogenaia ; Walcott 
Smithsonian Inst. Misc. Collect. .57 p. 269 
pi. xliii ff. ll-15a. 
Ampyx parmdua var. jikaenaia p. 29, 
yarraenaia sp. n. Silurian Victoria p. 295, 
figs., Chapman Melbourne Proc. R. Soc. 
Viet. N.S. 24. 
Arionellua sp T , Steinmann & Hoek N. 
Jahrb. Min. 34 p. 210 fig. 
Aaaphidue phylogeny and parallelism ; 
Raymond Ottawa Proo. Trans. R. Soc. 
Can. ser. 3 5 pp. 111-120 pl^. i— iii. 
Aaaphm cf. tyrannus , Steinmann & 
Hoek N. Jahrb. Min. 34 p, 235 fig. 
Barrandeia primula sp. n; Untersilur 
Bohmen, Holub Prag Rozpr. &esk6 
Ak. Frant Jos. 21 1912 No. 33 pp. 6-7 
fig. and Prag Bull. Ac. Sci. Franc. Jos. 
17 p.353 fig. 
Baaidechenclla subg. n. fur Dechenella 
kayaeri , Richter Abh. Senckenb. Ges. 
31 p. 278. 
Bronteua flabellifer, Asselbergs 
Bruxelles Bui. Soc. Geol. 26 p. 38 fig. 
Calymene hypostome iand antenna, 
Laurie London Rep. Brit. Ass. 81 p. 431. 
— C. cf. blumenbachi Silurian, 
Kashmir, Reed Rec. Geol. Surv. 
Calcutta 42 p. 20 figs. — C. diademata , 
