58 Crust. X. CRUSTACEA. GIGANTOSTRACA. 
[1904] 
MuNTHE (19) : Silurian, Spiti, Himalayas, Trilohita ; Hayden (14) : 
Upper Silurian or Old Red Sandstone, undetermined Gigantostracan ; 
Griffith (12) : Lower Silurian, Venezuela, Trilohita, n. sp. ; Drever- 
MANN (8) : Salina, New York, Xiphosura, n. sp. ; Clarke (5). 
Cambrian, Portugal, Trilohita, n. spp. ; Delgado (6) : Spiti, Himalayas, 
Trilohita ; Hayden (14) : Cambrian (?), Tasmania, Trilohita, n. sp. ; 
Etheridge (9). 
IV. SYSTEMATIC. 
XIPHOSURA. 
[See also tBoLTON (3), IWalther (27).] 
Limulus, physiology of heart ; Carlson, Amer. J. Physiol, xii, pp. 67-74, 
1 text- fig. : L. polyphemus, abnormal specimen ; Smith, Tufts Coll. 
Stud. No. 8, pp. 379-382, 1 text-fig. 
i Presticichia signata, Permian, Kansas, p. 23, fig. 1 ; Beecher, Amer. J. 
Sci. (4) xviii, n. sp. 
i Pseudoniscas roosevelti, Salina, New York, p. 89, pis. i & ii, figg. 1-3 ; 
Clarke, Rep. N. York Mus. liv (1), n. sp. 
tTRILOBITA. 
[See also Agnus (1), Grabau (11), Hayden (14), Hind (15), Holm (16), 
MuNTHE (19), Parkinson (20).] 
Aeidaspis pigra, p. 477, pi. xxiii, figg. 1, \a-c ; Harbort, Zeitschr. Deutsch. 
geol. Ges. Iv (4). 
Arethusina konincki, p. 83, pi. xi, figg. 14 & 15 ; Reed, Tril. Girvan ii. 
Asaphus sp., p. 49, pi. vii, fig. 9 ; Reed, t. c. : A. (Isotelus) emoryi, type 
specimen re-figured ; Walcott, Pal. Univ. Fasc. ii, pi. 28. 
Bohemilla sp., p. 53, pi. viii, fig. 4 ; Reed, Tril. Girvan ii. 
Bronteopsis scotica, p. 94, pi. xiii, figg. 5-13 ; Reed, t. c. 
B. ardmillanmsis, Silurian, Ayrshire, p. 92, pi. xiii, figg. 1-4 ; Reed, t. c. 
n. sp. 
Bronteus gra,mdatus, p. 483, pi. xxiv, figg. 1-7, Jiahellifer, p. xxiv, fig. 8 ; 
Harbort, Zeitschr. Deutsch. geol. Ges. Iv (4) : B. andersoni, p. 87, 
pi. xii, figg. 8-11, sp. ind. p. 91, pi. xii, fig. 15, sp. ind. p. 91, pi. xii, 
fig. 16 ; Reed, Tril. Girvan ii. 
B. craigensis, p. 89, pi. xii, figg. 12 & 13, grayi, p. 90, pi. xii, fig. 14, 
Silurian, Ayrshire ; Reed, t. c. n. spp. 
Calyynmene senaria, Lower Silurian, Venezuela, p. 91, pi. x, fig. 2 ; 
Drevermann, N. Jahrb. Min. 1904 (1), n. sp. 
Cydopyge armata, p. 51, pi. vii, figg. 11-14, pi. viii, fig. 1, rediviva, p. 52, 
pi. Viii, figg. 2 & 3 : Reed, Tril. Girvan ii. 
Cyphaspis ceratophthahna, p. 479, pi. xxiii, figg. 3, 3a, 4, 4a, 5, ba-c, 
cotwexa, p. 482, pi. xxiii, figg. 2, 2a-c ; Harbort, Zeitschr. Deutsch. 
geol. Ges. Iv (4) : C. megalops, p. 82 ; Reed, Tril. Girvan ii. 
DiJcelocephalus Jiorentinensis, Cambrian (?), Tasmania, p. 25, pi. x, fig. 4 ; 
Etheridge, Rec. Austral. Mus. v (2), n. sp. 
Encrinurus midtisegmentatus, p. 387, pi. xii, fig. 5 : Reed, Geol. Mag. (5) i. 
Hicksia n. g. (near Liostracus), p. 327, elvensis, p. 333, figg. on pis. i, ii, iv 
& V, sp/icerica, p. 335, figg. on pis. i-vi, transtagaiunsis, p. 337, figg. on 
pis. i, ii, V, vi, walcotti, p. 338, figg. on pis. ii-v, castroi, p. 340, figg. 
on pis. i, V, vi, hughesi, p. 341, figg. on pis. ii, v, vi, han-oisi, p. 342, 
figg. on pi. ii, dewalquei, p. 343, figg. on pis. i, ii, v, minuta, p. 344, 
figg. on pis. ii & V, Cambrian, Portugal; Delgado, Commun. geol. 
Portugal V, n. spp. 
