6 Aracfoi . 
[1909] 
XI. Arachnida.— Gigantostraca. 
23 ; Trilobita and Eurypterida in 
Cambridge Natural History; Woods, 
36,37. 
Morphology and classification of 
Agnostidae ( Trilobita ); Jaekel, 10. 
Structure of heart muscle in Limulus ; 
Meek, 16. 
Histologic der Respirationsorgane 
bei Limulus ; Bernecker, 2. 
Biologie der Limuliden ; Wilhelmi, 
34; Habits, of Limulus ; Annandale, 1. 
The king crab fisheries in Delaware 
bay ; Fowler, 6. 
Nomenclature of British spp. of 
Phacops (Trilobita) ; Thomas, 28. 
DISTRIBUTION = 2827. 
(Geological.) 
Evolution of early Paleozoic faunas 
in relation to their environment ; Wal- 
cott, 30. 
Cambrian. 
Nevada and California, Trilobita 
spp. n. ; Walcott, 30. 
Ordovician. 
Missouri, Trilobita , sp. n. ; Branson, 
3. 
Ceratopygeregion, Sweden, Trilobita, 
gg. et spp. n. ; Moberg & Segerberg, 17. 
Silurian. 
Sweden, Trilobita spp. n. ; Wester- 
g&rd, 33. 
North Baltic, Trilobita spp. n. ; 
Wiman, 35. 
Ob. Silur aus der Umgebung des 
Balchas Sees, Trilobita ; Stepanov, 26. 
Untersilur, Norddeutschland, Trilo- 
bita spp. n. ; Jaekel, 10. 
Tortworth, Trilobita ; Reed, 20. 
Eastern Alps, Italy, Trilobita sp. et 
var. n. ; Gortani e Vinassa de Regny, 6. 
Untersilur, Mittelbohmen, Trilobita 
sp. n. : Holub, 9. 
New Brunswick, Xiphosura, g. et sp. 
n. ; Matthew, 15. j 
Indiana, Ohio, and Kentucky, Tri- 
lobita, var. n. ; Foerste, 4. 
Devonian. 
Mitteldevon von Kielce-Sandomir, 
Trilobita ; Sobolew, 24. 
Mitteldevon iin rhcinischcn Schic- 
fergebirge, Trilobita sp. n. ; Herrmann, 
7. 
Trilobiten aus dem Rhcinischcn Schie- 
fergebirge, spp. n. ; Richter, 21. 
Cornwall, Trilobita sp. n. ; Thomas, 
27. 
Upper Devonian and Culm, Devon 
and Cornwall, Trilobita spy. n. ; Thomas 
29. 
Middle Devonian, Ohio, Trilobita, 
sp. n. ; Stauffer, 25. 
Carboniferous. 
Trilobita, lists ; Hind, 8. 
Coal Measures, Sparth, Lancashire, 
Belinurus ; Parker, 18. 
Middle Coal Measures, Sparth, Lan- 
cashire, Xiphosura ; Parker, 19. 
Krakow, Trilobita sp. n. ; Jarosz, 11. 
Nowaja Semlja, Trilobita ; Lee, 12. 
Carboniferous, Mississippi Valley, 
Trilobita sp. n. ; Weller, 32. 
Permo-Carboniferous. 
Witteberg series, Cape Colony, Eury- 
pterida ; Sewara, 22 ; Woodward, 38. 
Jurassic. fc 
Lower Oolite, Northamptonshire, 
Limulus sp. n. ; Watson, 31. 
III.— SYSTEMATIC = 2831. 
t TRILOBITA. 
Trilobita general account, Lister in 
Sedgwick’s Text-book of Zoology 3 p. 
361: Woods Cambridge Nat. Hist. 4 p. 
219. — Ordovician, Sweden, many spp. 
redescr. & fig., o MoBERG & Segerberg 
Lund. Univ. Arsskr. N. F. Afd. ii 2 
No. 7 1906 p. 77.— Mittel Devon, Polen, 
Sobolew, Mater, geol. Ross. 24 p. 
381 pi. iii f. 1-9. — Carboniferous, lists, 
Hind Naturalist London 1909 p. 149.— 
Carboniferous, Nowaja Semlja, spp. 
indet., Lee Edinburgh Trans. R. Soc. 
47 p. 178 pi. ii figs. 50 50a. 
