PALHOZOIC. CRUSTACEA. CAMBRIAN AND SILURIAN. 
CAMBRIAN. LOWER SIL. UPPER SILURIAN. 
me . Sle Se] slis| le]. & 
rg L 3 s\|e\al|e|2 3 
=| [8 SB BREESE 
Alglele =|B/E]S|o|2 ned ba eh oe 
SPECIES. slelale| is lolalglse iy aleialsl. REFERENCES. 
“2 slsls[ Mis lSiialsieislalslalsl= 
els|/M)Belelele]_lelelelelslaigie 
B/S olalsli= @ FIS| Sola 
BOS SIS S/S opal lili] sol sais | a 
| HS AIR 14 IA AYP IE IE IF A441 IB le 
CYTHERIDE. 
Thilipsura ...... Jones § Holl, 1869 
— corpulenta ...... Jones § Holl...) ...)...]...)s..foee oad Isnollo34 [aod |x] ]eefeeleefeeefe.| Ann. Mag. Nat. Hist. 4ser. vol. iii, 1869, p. 214, t.15, f.1; | 
ib. Jones, Monthly Micro. Jour. 1870, p. 185, t. 61, f. 2. 
— tuberosa ......... Sones & Holl,,.|...]...|...)ee.fooe So¢|ldaa|/a59 abo 041) Ipoa Indo (sos) jana [obs lode Ann. Mag. Nat. Hist. 4 ser. vol. iii, 1869, p. 214, t.15, f. 2. 
— Var. scripta ... Jones f Holl...|...}...)...]...Jee 564) (850) [ood [ebe Fe fecal 54 soa foos| anal ood Ines Ann. Mag. Nat. Hist. 4ser. vol. iii, 1869, p. 214, t.15, f. 3. 
PARADOXIDE. 
Tiresias ............ M‘Coy, 1846... 
— insculptus ...... MS COUNT. secevaes 60d) feos) ine jad fae wee lised lose nee seeleee[ooelseefece|ees[orelooo] SYNOP. Sil, Syst. Irel. p. 43, t. 4, f. 1. 
! 
| TRINUCLEIDE. 
TY Ebaspts, ....sc00:0-s M ‘Coy, 1849... 
— fimbriatus ...... Murch, v.viveee ses|tse|ees|feae|oee 990) (650) food Kop 634 [959] [660] ocr lot loodl Ioac| Fans 
— seticornis ...... HASING =. <2-<s05 wes[icasfede|serfens soalece|oosfass 660) [oo bed] kadal coal fang] logo aoe i Vide Trinucleus. 
PHACOPIDE. 
Trimerocephalus ... M ‘Coy, 1849 ...).+-| +++] .0:{eePore ds [ood Iobel |oti0 sesfecelecs|ecs[ecs{eee[eee]eee] Vade Phacops. (Devonian.) 
Sub-genus of Phacops. 
CALYMENID2. 
TPUMETUS: ..0.00c00008 Green, 1832 ...}...]---[e.feeefor 69) (ooal faced ooo aa Vide Homalonotus. 
AGNOSTID®. 
Trinodus .....0..0.+» VILE COtmerreatestos | eer pelleasl load kao oc loodl Baa loot ser[ess[evsloce[ees[ers]oes[eoe| Vede Agnostus, 
TRINUCLEIDE. 
Trinucleus......... Lhwyd, 1689 ... 
Tretaspis ...... M*<Coy, 1849... 
Cryptolithus ... Green, 1833 ... 
— caractact ...... Murch, 2.0.0...) ...|0--[ece|ecefoos]eee|one|oeefooe Vide T. concentricus. 
— concentricus ... Hato ......0c0..2|...|-0+|eoe|eoefoes ul lead lee Nuttania, Text-book, t.1, f. 2. TT. concentricus, Hall, Pal. 
N. York, vol. i, p. 249, t. 65, f.4; t.67, f£.1.. Crypto. 
tessellatus, jun®. Green, Mono. p. 73. TZ. ornatus, Sternb. 
Trilob. p. 67; ib. Salt. Q. J. Geol. Soc. vol. iii, p. 253, 
1847. . caractaci, Sil. Syst. t. 23, f.1; ib. Portl. Geol. 
Rept. t.1 B, f. 3-5. Z. elongatus, ib.f.7. T.concentricus, 
Siluria, 4ed. p. 51, Foss. 11, f. 85; p. 206, Foss. 47, t. 4, 
f. 2-5. TT. concent. Mem. Geol. Surv. vol. iii, p. 320, t.19, 
f. 4. T. gibbifrons, M‘Coy, Brit. Pal. Foss. t.1 E, f. 14. 
T. concent. Mem. Geol. Surv. Dec. VII, sect. 7, p. 63 vars. 
B,y7,5,€. TT. latus, Portl. Geol. Rept. p. 264. 
— elongatus ...... SPort lane seataeeeee me Al eats [ees iced acre onl Baal Gad leno Ad feel pel a Vide T. concentricus. 
— Etheridgei ...... ITC ICS aaa eer Soe faual aaa kind |e°| lod aoa lee [abo MeAlecel eal eel eee |ece| wanll eval) Qe diaiGeole Soca voluxxxig palssstsostaloe 
S—REAVUS: csisssceacee Salie tre.csneeees Ber (ng (eel (oec| (ood ye Jece|ecc[cec[ecsJeee{ece]eecfeee|eeefeee]e.] Mem. Geol. Surv. vol.ii, pt.1, t.9, £.3 (var. of concentricus) ; 
ib. Dec. VII, sect. 7, p. 6; ib. vol. iii, p. 320, t.13, f. 9. 
— fimbriatus ...... Murch. ..ccc.. Bee a bes) ert asl REA Peco ieee) (AR seclecefecc{ece|eee|eee{eee[eee] Sil. Syst. t. 23, £2.  Dretaspis, M‘Coy, Brit. Pal. Foss. 
p. 146, t.1 E, f.16. . fimbriatus, Salt. Dec. VII, 
sect. 7, p. 8; ib. Portl. Geol. Rept. p. 264, t.1 B, f.11, 
12; ib. Siluria, 4 ed. p. 51, Foss. 11, f. 6, t. 4, 
f. 7. (Tretaspis.) 
— Gibbsii ......... Saltsarecccrcesess Bea lee aso) eee] threat HES Ieee eee BG cesleccfecfeccfecc]eee{eee{eee] Siluria, 2 ed. p. 53, Foss. 9, f. 7; ib. Mem. Geol. Surv. vol. iii, 
p- 319, t.12, f. 10; Siluria, 4ed. p. 51, Foss. 10, f. 7. 
— gibbifrons ...... IMLS COU) fawee cena liees| oc lese||ees| eee] == |feos| ces | ces Vide T. concentricus. 
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