[1908] 
6 Arachn. XI. Arachnida.- 
Permian. 
Spitzbergen, Phillipsia sp. ; Lee, 16. 
Texas, Trilohita g. & sp. n. ; Girty, 
10 . 
III.— SYSTEMATIC = 2831. 
t TRILOBITA. 
A caste acutilohata p. 497 pi. xxi If. 
5--5b, xxxi f. 5, Bolivia, perplana p. 570 
pi. xxi f. 0, Argentina, spp. n. Devonian, 
Knod N. Jahrb. Min. lleilagebd 25. 
Agnontus ineertus described, Lake 
Monogr. British Cambrian Trilobites 
p. 29 pi. iii fl‘. 1-3. 
Albertella g. n. (Paradoxidae) p. 18, 
helena p. 19, British Columbia and 
Montana, Cambrian, hosicorthi p. 22, 
British Columbia, Cambrian, spp. n., 
Walcott Washington, Smithsonian Inst. 
Misc. Collect. Q. 53. 
Anisopyge g. n. near PhilUpsia p. 
505, included species : perannulata 
Shumard p. 500, antiqna p. 509, sp. n. 
Texas, Permian, Giuty Washington, 
Dept. Int. U. S. Geol. Surv, Prof. Papr. 
No. 58. 
Bathycheilus g. n. type B. perplexus, 
Holur Prag, Rozpr. 6eske Ak. Frant. 
Jos. 17 No. 10 p. 13. 
Batliyurisciis ornalns sp. n. British 
Columbia, Cambrian, Walcott Washing- 
ton, Smithsonian Inst. Misc. Collect. 
Q. 53 p. 39. 
Bathyuriia (?) levis sp. n. New York, 
Ordovician, Cleland Bui. Amer. Pal. 
No. 18 p. 10. 
Bumastus brevis, depressus, p. 575, 
longieaiidatus, praeruptus, pei'brevis, 
p. 576, inflatus p. 577, spp. n., sidcatus 
var. n. eonvexus p. 577, Obersilur, 
Kristianiagebiet, KiOiR Kristiania, Skr. 
Vid. selsk, I. 2. — B. billingsi p. 250 pi. 
Ixi If. 1-2, beUevillensis p. 253 ft'. 6-7, 
spp. n., eastern Canada, Ordovician, 
miUeri p. 249 ft. 9-10, pi. Ixii ft. 3-5, 
indeterminatus p. 253 ft'. 8-9, descrip- 
tions, Raymond & Narraway Pittsburg, 
Ann. Carnegie Mus. 4. 
Burlingia g. n. p. 14, Biirlingidae 
fam. n., hectori sp. n. p. 15 British 
Columbia, Cambrian, Walcott Wash- 
ington, Smithsonian Inst. Misc. Collect. 
Q. 53. 
— Gigantostraca. 
Ceratocephala robinia described, 
Clarke Albany, St. Educ. Dept., Mus. 
Mem. 9 p. 140 pi. iii ft. 9-1 J. 
Cordania gasepiou described, Clarke 
T. c. p. 136 pi. ix ft. 9-10. 
Dalmanites griffoni p. 103 pi. vii f. 4, 
pi. ix f. 4, coxiiis p. 103 pi. vii f. 1, 
dolbell p. 121 pi. viii ft. 1-7, lowl p. 122 
pi. ix ft. 6-8, veitl p. 124, uliiteavesi p. 
125 pi. viii ft. 11, 13, perceensis p. 126 
pi. iv ft. 1-3, pi. V f. 2, gaveyi p. 128 
pi. viii ft. 8, 9, biardi p. 129 pi. vi ft. 1- 
12, esnoufi p. 130 pi. ix f. 5, micrurus 
p. 120 pi. ix ft. 1-3, phaeoptyx p. 123 pi. 
vii ft'. 5-10, emarginatus p 127 pi. vii ft. 
2-3, descriptions, Clarke T.c. — D. 
bohmi sp. n. Argentina, Devonian, Knod 
N. Jahrb. Min. Beilagebd. 25 p. 568 pi. 
xxi f. 1. 
Desmus g. n. near Niobe and Ogygia, 
cobboldi sp. n. Cambrian, Shropshire, 
Raw London, Rep. Brit. Ass. 1907 p. 
512. 
lllaemia latiaxiatus sp. n. Ontario and 
New York, Ordovician p. 243 pi. lx ft. 
4-8, conradi ft. 9-10, angusticollis p. 
245 j)l. Ixi ft. 1-5 described, Raymond 
and Narraway Pittslvurg, Ann. 
Carnegie Mus. 4 — I. rotundas, sculptus, 
p. 572, postremus, briggeri, longispi- 
nosus, p. 573, spp. n., Obersilur, 
Kristianiagebiet, Kker Kristiania, 
Skr. Vid. selsk. I 1906 2. 
Leptoplastides subg. n. of Olenus for 
O. salteri Call., Shineton Shales, Raw 
L ondon, Rep. Brit. Ass. 1907 p. 512. 
Liehas bellamicus pi. iii ft. 5-7, 
Jorillonia pi. i ft. 1-2, pi. ii ft. 1-3, pi. 
iii ft. 1-4, descriptions, Clarke Albany, 
St. Educ. Dept., Mus. Mem. 9 p. 137. 
Microdiscus lobatus p. 32 pi. iii ft. 4- 
6, speciosus p. 33 f. 7, sculptus p. 35 ft. 
9-10, punctatus p. 36 ft. 11-17, de- 
scriptions, Lake Monogr. British 
Cambrian Trilobites. 
Ncolenus inflatus p. 30, intermedins 
p. 34, i. var. n. pugio p. 35, superbus pp. 
36-39, spp. n. Utah, Cambrian, Walcott 
W ashington, Smithsonian Inst., Misc. 
Collect. Q. 53. 
Olenus key to subgenera p. 5l,trun- 
catus p. 52 pi. V ft. 1-7, gibbosus p. 54 
ft. 8-10, micrurus p. 55 ft. 11-12, cata- 
ractes p. 56 ft. 13-17, pi. vi f. 1, longi- 
8i)inosus p. 60 ft. 6-7, descriptions, 
mundua sp. n. Cambrian, Wales ji. 58 
