7 Arachn. 
Systematic — Triloba A. , . k 
• , 2831 
Eclenaspis gen. n. Asaphidae p. 292 
for Megalaspis beckeri (Slocum), Ray- 
mond Bui. Mus. comp. zool. Harvard 
64. 
j Ectenonotus gen. n. Eucrinuridae p. 
295 for Amphion westoni Billings, 
Raymond t.c. 
Endymionia schucherti sp. n. Ordovi- 
cian, Newfoundland p. 277, Raymond 
t.c. 
Endymioniidae fam. n. neat Rhapio- 
phoridae p. 277, Raymond t.c. 
Eoharpts ottawaensis p. 332 pi. li, 
Bassler Maryland geol. surv. Cam- 
brian Ordovic, 1919. 
Goldius furcifer, canaliculatus p. 126, 
thyzampeltis p. 127, pi. i, Ferroniere 
Nantes Bui. soc. sci. Ser. iii 6. 
Qoniurus caudatus p. 340 pi. xxxvii, 
Bassler Maryland gaol. surv. Cam- 
brian Ordovic. 1919. 
Hemigyraspis collieana p. 346 pi. 
xxxii, Bassler t.c. 
H emisphaerocoryphe pseudohemicrani- 
um p. 126 text-fig., Barton Washington 
Univ. Studies 3. 
Homalonotus ( Digonus ) goniopy- 
gacus p. 302 ( Burmeisterella ) bifur calus 
sp. n. Devonian Torquay p. 303, cham- 
pernownei p. 341, elongatusp. 343, sp. ? 
p. 344, ( Parahomolanotus ) whidbornei 
sp. n. Devonian Torquay p. 344, pi. iv, 
Reed Geol. Mag. 57. 
Homotelus gen. n. p. 285 Asaphidae, 
ulrichi p. 287, elongalus, indentus p. 288, 
laevis p. 289, laeviurus, catactus p. 289, 
gratiosus p. 291, spp. n. Ordovician 
N. America, Raymond Bui. Mus. comp, 
zool. Harvard 64. 
Hyboaspis gen. n. p. 285 Asaphidae, 
shuleri sp. n. Ordovician N. America 
p. 285, Raymond t.c. 
Hystricurus conicus p. 340 pi. xxxiii, 
Bassler Maryland geol. surv. Cam- 
brian Ordovic. 1919. 
Illaenus americanus p. 349 pi. li, 
Bassler t.c. 
Isotelus anneclans p. 293, rejuvenis 
p. 294, spp. n. Ordovician N. America, 
Raymond Bui. Mus. comp. zool. 
Harvard 64. — 1. latus p. 34, maximus 
p. 35 pi. x, gigas p. 37, arenicola p. 39, 
text-figs., Raymond Conn. Mem. Acad. 
Arts Aci. 7. — I. stegops p. 342 pi. lvi, 
megistos p. 343 pi. lviii, gigas p. 344 
pi. xlviii, sp. ? p. 345 pi. xxxvii, Bass- 
ler Maryland geol. surv. Cambrian 
Ordovic. 1919. 
Kawina gen. n. Cheiruninae for 
Cheirurus part. Ordovician Canada, 
vulcanus p. 117, billingsi p. 118 text- 
figs., Barton Washington Univ. Studies 
3. 
Kootenia dawsoni p. 46, Raymond 
Conn. Mem. Acad. Arts Sci. 7. > 
Lehua gen. n. Cheiruninae for Cheiru- 
rus part. Bohemia, vinculum p. l28toxt- 
fig., Barton Washington Univ. Studies 
3. 
Lichas ( Euarges ) mephisto sp. n. 
Devonian Auburg, Rhino p. 149 text- 
fig., Richter Wiesbaden Jahrb. Ver. 
Natk. 70. 
Naraoia compacta p. 139 text- figs., 
Raymond Conn. Mem. Acad. Arts Sci. 
7. 
Nathorstia transitans p. 31 text-figs, 
Raymond t.c. 
Neolenus serratus p. 21 text-figs., 
Raymond t.c. 
Nieszkowskia cephalocems p. 115 text- 
fig., Barton Washington Univ. Studies 
3. 
Nileoides gen. n. p. 284 Asaphidae, 
perkinsi p. 284, Raymond Bui. Mus. 
comp. zool. Harvard 64. 
Odontopleura hartleii sp. n. Silurian 
N.S. Wales p. 852 pi. xlvii, Mitchell 
Proc. Linn. Soc. N.S. Wales 44. 
Olenellus thompsoni p. 339 pi. xxiv, 
Bassler Maryland geol. surv. Cam- 
brian Ordovic. 1919. 
Onchometopus simplex p. 348 pi. 
xlvii, Bassler t.c. 
Phacops sternbergi p. 128 pi. i, 
Ferroniere Nantes Bui. soc. sci. Ser. 
iii 6. 
Pilekia gpn. n. Cheiruninae for Cheiru- 
rus part. Ordovician, Canada, apolld 
p. 113 text-fig., Barton Washington 
Univ. Studies 3. 
Placoparia zippei p. 120 text- fig., 
Barton t.c. 
Pliomerops salteri p. 359 pi. xxxvi, 
Bassler Maryland geol. surv. Cam- 
brian Ordovic. 1919 
