76 Cru$t. X. CRUSTACEA. GIGASTPOSTRACA. [1905] 
Ordovician: Chazy, New York, Trilobita n. spp. ; Raymond (19 & 20) : 
Pennsylvania, Trilobita n, sp. ; Goldie (6). , 
Cambrian : Shumardiaschiefer,” Nerike, Sweden, Trilobita n. spp.; 
Wiman (29) : India, Trilobita ; Walcott (28) : Lower Cambrian, Yunnan, 
Trilobita ; Mansuy (15) : Upper Cambrian, Shantung, China, Trilobita 
n. spp.; Monke (17): Cambrian, S. Australia, Trilobita ; Etheridge (7) : 
Cape Breton, New Brunswick, Tnlobita n. spp. ; Matthew (16). 
IY. SYSTEMATIC. 
XIPHOSURA. 
[See also Garrey (9), +Peach & Horne (18).] 
t Belinurus lunatus , p. 126, text-fig. 2; Baldwin, Tr. Manchester Geol. Soc. 
xxix (4). 
Carcinoscopius rotundicauda , specimen found at Isle of Wight ; Teget- 
meier, P. Zool. Soc. London 1904, ii (2), p. 181. 
Limulus , physiology of heart ; Carlson, Biol. Bull, viii, p. 152, and Amer. 
J. Pysiol. xiii, pp. 217-240, 16 text-figg. 
t Prestwichia anthrax , p. 124, text-fig. 1 ; Baldwin, Tr. Manchester Geol. 
Soc. xxix (4). 
+TRILOBITA. 
[See also Bigot (2), Felix (8), Hind and others (10), Jonker (11), Kazan- 
skii (12), Mansuy (15), Peach & Horne (18), Shearsby (24), 
Shimer (25), Walcott (28).] 
Acerocare norvegicum, p. 63, pi. iii, figg. 19-30 ; Wiman, Bull. Geol. Inst. 
Upsala vi. 
Acidaspis, see Glaphurus. 
Agnostus glabratus, p. 12, pi. i, figg. 27 & 28, var. ingricus , p. 13, pi. i, 
figg. 23 & 24, lentiformis, p. 13, pi. i, figg. 21 & 22, A. sp., p. 14, pi. i, 
figg. 25 & 26 ; Wiman, Arkiv Zool. ii, No. 11. 
A. koerferi, Cambrian, Shantung, p. Ill, pi. iii, figg. 1-9, pi. ix ; Monke, 
Jahrb. geol. Landesanst. Berlin xxiii (1), n. sp. 
Amphion canadensis } p. 363, pi. xiv, figg. 10-13 ; Raymond, Ann. Carnegie 
Mus. iii (2). 
Ampyx brevicauda, Cambrian, Sweden, p. 12, pi. i, figg. 19 & 20 ; Wiman, 
Arkiv Zool. ii, No. 11, n. sp. 
Angelina sp., p. 413, pi. xviii, fig. 9 ; M A ' i1THEW ) Bull. Soc. New Bruns- 
wick xx, n. sp. 
Apatocephalus pecteny Cambrian, Sweden, p. 6, pi. i, figg. 7-12 ; Wiman, 
Arkiv Zool. ii, No. 11, n. sp. 
Arionellus balticus , Silurian, N. Baltic region, p. 44, pi. i, figg. 17-21 ; 
Wiman, Bull. Geol. Inst. Upsala vi, n. sp. 
Asaphellus homfrayi var., p. 413, pi. xviii, figg. 10 a-e \ Matthew, Bull. 
Soc. New Brunswick xx. 
A. (?) planus, Cambrian, Cape Breton, p. 419, pi. xviii, fig. U ; Matthew, 
t. c. n. sp, 
Asaphus marginalis, p. 339, pi. x, figg. 17-20, pi. xi, spp. (?), p. 341, 
pi. xii, figg. 8-10 ; Raymond, Ann. Carnegie Mus. iii (2). 
Bathyurellus brevispmus, p. 337, pi. x, figg. 13-15, minor, p. 338, pi. x, 
fig. 16, Ordovician, Chazy ; Raymond, t. c. n. spp. 
Bathyurus angelini, p. 335, pi. x, figg. 11 & 12, text-fig. 1 ; Raymond, t. c. 
Brongniartia trentonensis, p. 418, pi. li^, figg. 1 & 2 ; Collie, Bull. Geol. 
Soc. Amer. xiv. 
