9 Arachn. 
2231 
Systematic. — Xiphosura— Eurypterida. 
Geol. Soc. Amer. 20 p. 320 pi. xv figs. 
20 - 22 . 
Pseudagnostus gen. n. type A. cyclo- 
pyge Tullberg, Jaekel Berlin Zs. D. 
geol. Ges. 61 p. 400. 
Ptychagnostus gen. n., Jaekel T.c. 
p. 401. 
Pterygometopus lincolnensis sp. n. 
Missouri, Ordovician, p. 46 pi. vii figs. 
17-19, intermedins Walcott p. 47 pi. vii 
fig. 20, Branson St. Louis Trans. Acad. 
Sci. 18. 
Schmidtiellus nom. n. for Schmidtia 
Marcou nec Volborth (type Olenellus 
mickwitzi Schmidt), Moberg Lund Univ. 
Arsskr. N. F. Afd. ii 2 No. 7 1906 p. 35. 
Shumardia dicksoni sp. n. Ordovician, 
Sweden, Moberg T.c. p. 81 pi. iv figs. 
17-22. 
Symphysurus elongitus sp. n. Ordovi- 
cian, Sweden, Moberg & Segerberg 
T.c. p. 92 pi. v fig. 24. 
XIPHOSURA. 
Xiphosura general account, Lister 
in Sedgwick’s Text-book of Zoology 3 
p. 786 ; Shipley Cambridge Nat. Hist. 
4 p. 259. — f Xiphosura Middle Coal 
Measures, Sparth, Lancashire, Parker 
Lancashire Naturalist 2 p. 2 figs. 
f Belinuropsis gen. n. near Belinnrus, 
wigudensis sp. n. Silurian, New Bruns- 
wick, Matthew Ottawa Trans. R. Soc. 
Can. ser. iii 3 p. 116 pi. i figs. 3a -d. 
f Belinnrus lunatus Coal Measures, 
Sparth, Lancashire, Parker Lancashire 
Nat. 1 1907 p. 44 1 fig. 
Limulus moluccanus and L. ( Carcinos - 
corpius) rotundicauda, habits, Annan- 
dale Rec. Indian Mus. Calcutta 3 p. 
291. — L. Histologic der Rospirations- 
organe, Berneoker Zool Jahrb. Anat. 
27 p. 583 4 Taf. — L. polyphemus fishery, 
Fowler Rep. New Jersey State Mus. 
1907 1908 p. 113 1 pi. — L. structure of 
heart muscle Meek J. Morph. Phila- 
delphia 20 p. 403 2 pis. — f L. woodwardi 
sp. n. Lower Oolite Northamptonshire, 
Watson Geol. Mag. London Dec. V 6 
p. 14 fig. — L. Biologie, Wilhelmi Zool. 
Beob. 50 p. 335. 
EURYPTERIDA. 
Eurypterida general account, Lister 
in Sedgwick’s Text-book of Zoology 3 
p. 796 ; Woods Cambridge Nat. Hist. 4 
p. 281. 
Eurypterid nature of Hastimima, 
Seward Geol. Mag. London Dec. V 6 p. 
485 pi. xxviii figs. 5 and 6 ; Woodward 
T.c. p. 486 text-figs. 1 and 2. 
