11 Arachn. 
Systematic. — Trilobita, etc. 
2831 
Stromatocyslites cannati sp. n. Cam- 
brian Coulouma Miquel Paris Bui. soc. 
geol. 5 (482) pi. xv f. 5. 
Symphysurus npolonista sp. n. Bolivia 
Lake London, Q. J. Geol. Soc. 62, (427) 
pi. xl lb 2 and 3. — S. superstes sp. n. 
Silurian Sweden Olin Lund Univ. 
Arssk. N.F. 2 ii 3 (64) pi. iii ff. 6-9. 
Trachyostracus gen. n. for Solenopleura 
howleyi and Ptychoparia limbata, Lorenz 
Berlin, Zs. D. geol. Ges. 58 (60). 
Triarthrus angelini description 
Lamanskij St. Peterburg Mdm. com. 
geol. N. ser. 20 (6) pi. i. f. 1. 
Trinucleus alfredi sp. n. Silurian 
Bohemia Zelizko Prag Rozpr. C8ske 
Ak. Frant. Jos. 15 No. 42 (16) pi. i ff. 
1-6. — T. boliviensis sp. n. Bolivia Lake 
London Q. J. Geol. Soc. 62, (427) pi. xl 
IT. 485. — T. bucTdandi (66) pi. iv f. 1, 
cerioides (67) f. 2 descriptions, ellipti- 
frons sp. n. (68) f. 3 Silurian Sweden 
Oi in Lund Univ. Arssk. N.F. 2 ii 3. 
Zacanthoides typicalis (299) pi. iii, 
If. 2-2f. grabaui (300) If. 3 -3b, Cambrian 
Nevada Pack J. Geol. Chicago 111. 14. 
XIPHOSURA. 
Limulus ; early stages, physiology 
Pearl J. Comp. Neur. Granville Ohio 
14 (138-164); physiology of the heart 
Carlson Amer. J. Physiol Boston Mass. 
15 (99 120) Op. cit. 16 (378-408) Op. cit. 
17, (177-210) ; Newman Op. cit. 15 (371- 
386). f L. nathorsti sp. n. Jurassic 
Sweden Jackson Ark. Zool. Stockholm 3 
No. 11 (1). 
t EURYPTERIDA. 
Eurypterida of Bohemia Seemann 
Wien, Beitr. Pal. Geol. OestUng. 19 
1906 (49-57) pi. iv. 
Pterygotus fissus sp. n. Bohemia 
Seemann Wien, Beitr. Pal. Geol. Oest- 
Ung. 19, (53) pi. iv f. 5. 
Stylonurus (?) simonsoni description, 
removed from Euryplerus Soiimidt 
St. Peterburg, Bull. Ac. Sc. ser. 5, 20 
(99-105) 1 pi. 
