[1900] 
8 Araclm. Xl. Arachnida.— Gigantostraca. 
Holrnia weeksi, rowei, spp. n., Nevada 
and California, Cambrian, Walcott J. 
Geol. 17 p. 197. 
Holometopus tornquisti sp. n. Ordo- 
vician, Sweden, Moberg & Segerberg 
Lund Univ. Arsskr. N. F. Afd. ii 2 No. 7 
1906 p. 99 pi. vii fig. 6. — H. nitens sp. n. 
Silurian, North Baltic, Wiman Upsala 
Bull. Geol. Inst. 8 No. 2 p. 112 pi. vii 
figs. 19 and 20. 
Homalonotus delphinocephalus, Fo- 
erste Cincinnati J. Soc. Hist. Nat. 
21 p. 34 pi. ii figs. 19 A, B, C. 
Hypagnostus gen. n. typo A. pcirvi- 
frons Linnarson, Jaekel Berlin Zs. D. 
geol. Ges. 61 p. 399. 
Hysterolenus levicauda sp. n. Ordovi- 
cian, Sweden, Moberg Lund Univ. 
Arsskr. N. F. Afd. ii 2 No. 7 1906 p. 84 
pi. iv. fig. 40. 
Illaenus oriens sp. n. Ordovician, Swe- 
den, Moberg & Segerberg T.c. p. 98, 
pi. vii fig. 2. — 1 . ? mirus sp. n. Silurian 
North B iltic, Wiman Upsala Bull. Geol. 
Inst. 8 No. 2 p. 114 pi. vii fig. 18. 
Leiagnostus gen. n. type erraticus 
sp. n. Untersilur, Rixdorf, Jaekel Ber- 
lin Zs. D. geol. Ges. 61 p. 401 figs. 22 
and 23. 
Lidias beryllifera sp. n. Rheinische 
Schiefergebirge, Richter Diss. Marburg 
p. — L. bottniensis sp. n. Silurian, 
North Baltic, Wiman Upsala Bull. 
Geol. Inst. 8 No. 2 p. 107 pi. vii f. 16. 
Megalaspis Intacta sp. n. (Segerberg 
MS.) Ordovician Sweden, o Moberg & 
Segerberg Lund Univ. Arsskr. N. F. 
Afd. ii 2 No. 7 1906 p. 96 pi. vi figs. 
20 and 21. 
Mesagnostus gen. n. type A. integer 
Barr., Jaekel Berlin Zs. D. geol. Ges. 
61 p. 398. 
Metagnostus gen. n. p. 398, type 
erraticus sp. n. Untersilur, N. Deutsch- 
land, Jaek'elT.c. p. 382 figs. 
Miagnostus gen. n. type A. laeviga- 
tas Dalman, Jaekel T.c. p. 401. 
Miomera n. subord.of Trilobita, Jae- 
kel T.c. p. 394. 
Niobe insignis var. n. angustifrons 
(Segerberg MS.), Moberg & Segerberg 
Lund Univ. Arsskr. N. F.Afd. ii 2 No. 7 
1906 p. 95 pi. vi figs. 10-14. — N. prima- 
eva sp. n. Silurian, Sk&ne, Westergard 
Lund Univ. Arsskr. 5 Afd. 2 No. 3 p. 52 
pi. i figs. 23 and 24 
Paragnostidae fam. n., Jaekel Berlin 
Zs. D. geol. Ges. 61 p. 396. 
Paragnostus gen. n. type A. rex Bar- 
rande, Jaekel T.c. p. 396. 
Peltura cornigera sp. n. Silurian, 
Skane, WestergSrd Lund Univ. Arsskr. 
5 Afd. 2 No. 3 p. 47 pi. i figs. 2-4. 
Phacops kayseri sp. n. Rheinisches 
Schiefergebirge, Herrmann Diss. Mar- 
burg 1909 p. . — P. weaveri, Reed 
Geol. Mag. London Dec. V 6 p. 69. — P. 
breviceps Barr. p. 383 pi. iii f. 0, cf. 
breviceps Barr. p. 384 pi. iii f. 2, 3, 4, 
sp. n. p. 3S5 pi. iii f. 5, Mitteldevon von 
Polon, Sobolew Mater, geol. Ross. 24. 
— P. (T rimer ocephalus) pentops sp. n. 
Devonian Cornwall, Thomas Geol. 
Mag. London Dec. V 6 p. 97 pi. iii 
figs. 1-4. — P. ( Trimerocephalus ) trinu- 
cleus nom. n. for P. ( T .) laevis Salter 
nec Munster, Thomas T.c. p. 167. — 
P.(Trimerocephalus)anophthalmus p. 193 
pi. vii fig. 1 sp. aff. cryptophthalmus p. 
194 pi. vii figs. 2 and 3, tripartitus sp. n. 
Upper Devonian Devonshire, p. 196 
pi. vii figs. 4 & 5, Thomas T.c. 
Phillipsia gemmulifera p. 371 pi. xi 
fig. 2, eichwaldi p. 372 pi. xi fig. 5, 
Jarosz Krakow Bull. Intern. Acad. 
1909.— P. minor p.201 pi. vii fig. 11, sp. 
cf. minor p. 201 pi. vii figs. 12 and 13, 
sp. p. 202 pi. vii fig. 14, Thomas Geol. 
Mag. London Dec. V 6. 
Polymera n. subord. of Trilobita, 
Jaekel Berlin Zs. 1). geol. Ges. 61 p. 
394. 
Pro'etus joveolatus sp. n. Silurian, 
Eastern Alps, Italy, Gortani e Vin- 
assa de Regny Bologna Mem. Acc. 
Sci. Ser. vi 6 p. 112 pi. i fig. 26.— P. 
tenuimargo sp. n. Rheinischo Schiefer- 
gebirge, Richter Diss. Marburg p. 
— P. crassimargo Mitteldevon von 
Polen, Sobolew Mater, geol. Ross 
24 p. 388 pi. iii fig. 7. — P. welleri sp. n. 
Ohio Devonian, Stauffer Ohio Geol. 
Surv. Bull. (Ser. 4) No. 10 p. 195 pi. xvii 
figs. 12 and 13. — P. dunhevidensis sp. n. 
Upper Devonian Cornwall p. 197 pi. 
vii fig. 6, sp. a p. 199 pi. vii fig. 7, sp. b 
p. 199 pi. vii fig. 8, sp. c p. 200 pi. vii 
fig. 9, Thomas Geol. Mag. London Dec. 
V 6. — P. fernglenensis sp. n. Mississippi 
Valley Carboniferous, Weller Bull. 
