gigantostraca. Crust 61 
Morphology of limbs of Merostomata and Trilobita , compared with other 
Arthropods ; Borner (2). 
“Hypostomic eyes” of Trilobites compared with “ Kolbenzellen organ” 
of Limulus \ Spencer (31). 
Coagulation of the blood in Limulus ; Loeb (23). 
Excretory organs of Limulus ; Bruntz (3). 
General account of fossil Xiphosurce ; Fritel (12) : of fossil Eurypterida ; 
Fritel (13). 
Catalogue of type-specimens of fossil Gigantostraca in New York State 
Mus. ; Clarke & Ruedemann (5). 
III. DISTRIBUTION. 
Ceylon, Limulus ; Willey (34). 
Palaeozoic “Manx Slates” and Carboniferous, Isle of Man, Trilobita ; 
Lamplugh (22). 
Middle Coal Measures, Rochdale, Bellinurus; Baldwin (1). 
Carboniferous, Trilobita : Lower Carboniferous, near Diisseldorf ; I)re- 
vermann (9) : Lower Carboniferous, Rossberg, Alsace, Schumacher (30) : 
Carboniferous, Culm, Giessen ; Parkinson (25) : Colorado, Trilobita ; 
Girty (16): N. S. Wales; Reed (29). 
Devonian, Trilobita'. Devonian Slates, Cornwall, n. sp. ; Woodward 
(36): Lower Devonian, Germany; Walther (32): New Jersey, n. spp. ; 
Weller (33): Marcellus shale, New Jersey, n. sp. ; Hitchcock (19): 
Hamilton formation, New York; Cleland (7): Ohio Basin; Claypole 
(6): Western Tennessee; Foerste (11): Devonian and Permo-carboni- 
ferous, Lower Amazons ; Katzer (21). 
Silurian, Trilobita : Wenlock group, n. sp. ; Reed (28) : Girvan, Ayrshire, 
n. spp. ; Reed (27): Gothland; Wiman (35): Lower Silurian, Bohemia; 
ZelIzko (38): New Jersey, n. spp.; Weller (33): Western Tennessee; 
Foerste (11): Lower Silurian, Calciferous group, Mohawk Valley, New 
York, n. sp. ; ClelAnd (8). 
Ordovician, Trilobita'. Isle of Man; Gill (15): Trenton group, New 
York; Raymond (26): New Jersey, n. spp.; Weller (33): Lower Ordo- 
vician, Victoria, n. sp. ; Gregory (17). 
Cambrian, Trilobita'. Bornholm; Gronwall (18): New Jersey, H. spp.; 
Weller (33): Mount Noyes, Canadian Rockies; Woodward (37): Central 
Australia, n. spp. ; Etheridge (10). 
IV. SYSTEMATIC. 
Merostomata and Trilobita included in Palceopoda, new phylum, together 
with Arachnida, p. 146 ; Packard, P. Amer. Phil. Soc. xlii. 
XIPHOSURiE. 
General account of fossil Xiphosurce , with keys to genera and figg. ; 
Fritel, Naturaliste 1902, pp. 221-224. 
{Bellinurus bellulus , Rochdale, p. 198, fig. in text; Baldwin, Tr. Man- 
chester Geol. Soc. xxviii (8). 
Limulus from Ceylon, p. 13, fig. 8; Willey, Spolia Zeylan. i: A., 
excretory organs, p. 357 ; Bruntz, Arch. Biol, xx : A., coagulation of 
blood; Loeb, Biol. Bull, iv, pp. 301-318. 
