PALAOZOIC. CRUSTACEA. CAMBRIAN AND SILURIAN, 
CAMBRIAN. LOWER SIL. UPPER SILURIAN. 
2|_/2 PIS sila Sslalelé 
AlalBls 6|/Blelsle/2 Ble) s/h We 
SPECIES. 3/.3)els) |S|slS] 8) Slsl4lAlBlala| a REFERENCES. 
mye elSlelsSIRIis|si8ial8lalel= 
HIS(RISISiASAPiE IEE Aldisia ja 
CHEIRURIDE. 
Spherexochus ... Beyrich, 1845.. 
Pecieeeepates sesfeveferefecsPersfeee] ak [evefeee|ess[eee[ersferterelaeteetee.| Mono. Brit. Sil, Trilob. Pal. Soc. p. 79, t.6, f. 27, 28. 
? Cheirurus clavifrons, M‘Coy, Brit. Pal. Foss. p. 154 
(non Dalm. Angelin, Sars, or Boeck.). 
nogaecescoce| po. Sc\[5oq jondlfondlfanc| ood] fad) foot faco| ond|fooslhsac\fonellood lesc|| Leash mesh 
= FJUVENMS so .rscnee SGlt. Receseeceane 830) (coal |56o| oud! [od] | Spollacd| hoe bane po4|{ase| eos seeleee[easleee]eee] Vode Cheirurus, 
MITTS! sachsen ses Beyrich: .i.css0s6 otal lseal (sce lect ce Spel! feel [bos x | x | & |-efeeefeee|ee-]..-| Ueber Einige. Bohm. Trilob. p. 21; ib. Zweite Stiick. t. 1, 
£.8. S.calvus, M‘Coy, Sil. Foss. Irel. t. 4, f.10. S. mirus, 
Barr. Syst. Sil. de Bohéme, vol. i, t. 42, f.11,18 ; ib. 
Salt. Mem. Geol. Sury. Dec. VII, t.3; ib. Mono. Brit. Sil. 
Trilob. Pal. Soc. p. 76, t. 6, f.1-6. Hawle and Corda, 
OLENID. Prodr: p.138; ts:7) £2.72. 
Spheropthalmus ... Angelin, 1852-4] ...|...)...|e.cfeee[eee[ees[oe ees cH joan |oae poe] |e) ase hood lace Vide Olenus. 
Sub-genus of Olenus... Dalmann 
CHEIRURIDR. 
Staurocephalus... Barrande, 1846 
Trochurus ...... Beyrich, 1846... 
Cerauurus......oe Green, 1833 ... 
— globiceps......... OnE Uyawatesneceee val [este l sete| sere eat Boel |'<9 ||cod Eon sec[ace[esefese]eee{esfee-[.e.| Cerawrus, Geol. Rept. p. 257, t.1, £.7. Stauro. Salt. Mem, 
Geol. Surv. Dee. XI, t. 5, £.6; ib. Mono. Brit. Sil. Trilob. 
Pal. Soc. p. 85, t. 7, £. 21; woodcut, p. 86. 
— Maclareni ...... TOM oo vatescusss sealed aeeleealiecs meal aed eal eee sesfecc[ecefeeeleceleee{eee{ee.| Aetdaspis unica, Thom. Q. J. Geol. Soc. vol. xiii, t.6, £.13. 
Staurocephalus, Mem. Geol. Sury. Dec, XI, art. 5, p- 4. 
— Murchisoni...... BORE Seana adeess Bact feel Feast eer lace ie coef | x [eee] ok [ee-[eee[eeefeee]...| Syst. Sil. Bohéme, t. 43, f. 28-32; ib. M‘Coy, Brit. Pal. Foss. 
p.153, t.1 F, f.15; ib. Salt. Mem. Geol. Surv. Dec. XI, 
t. 5, f.1-5; ib. Siluria, ed. p. 521; ib. Mono. Brit. Sil. 
Trilob, Pal. Soc. p. 84, t. 7, £. 13-20. 
mn SUNI CUS Sereeicnae ee DU Per nepoacnnee Solleealione | eaL eee sacl Leal Ibod loge ses[ase{avefees|eve{aeefeee[ee.| Actdaspis, Q. J. Geol. Soc. vol. xiii, t. 6, £.13,14. Stauro- 
cephalus, Salt. Mem. Geol. Surv. Dec. XI, art.5. Stauro. 
P unicus, Salt. Mono. Brit. Foss. Trilob, Pal. Soc. p. 86, 
tiew75) hi 2 25124 
sa! OPS, sansecevetes SALLE Nicssacncecen aoc ood nba) bad haan bocl hE t| food (e0c sive ave lees|ives| weal oen| etal aed Mono Brit. Drilobs bala Socsp.oi7a Ualizs itn 25s 
ASAPHID®. 
Sty SIN ge Voiseescces Salter, 1852 ... 
— latifrons......... IB OPEL eon scsecrea| ten caleas leecl eealies PP] e.c]ecc[eee|ens]ece{oeefees]ee.| Asaphus, Geol. Rept. Lond. &c. p. 292, t. 7, £.5,6. A. 
marginatus, ib. f. 7. Stygina, Salt. Mem. Geol. Surv. 
Dec. XI, sect. 2, p. 1, t. 2; ib. Siluria, 4 ed. p. 174, Foss. 29, 
f. 2; ib. Mono. Brit. Sil. Trilob. Pal. Soc. p.172, t. 18, 
f. 7-10. 
— Murchisonie# ,.. Murch. ......... Beni ees) (oe load lone scallessf aes seclecc[ace|eesfece{eeefees{e--] Ogygia, Sil. Syst. p. 664, t. 25, f. 3; ib. Salt. Mem. Geol. 
Surv. Dec. XI, sect. 2, p. 3; ib. Siluria, 4 ed. p. 51, Foss. 11, 
f. 4, t.4, f.1 5 ib. Mono, Brit. Sil. Trilob. Pal. Soe. p. 173, 
Ley ditaly pap lite 
— Musheni.....,... BSL Terre era ep oEoA bod Ieec| [0d lone laael lanes 23 ||50q boos Mono, Brit. Sil. Trilob. Pal. Soc. p. 174, t. 29, f.1. 
SI SDS) caveceuessasessesssosssessqseeree veal toe] one] tea sce lees ll deellsee| eee lee es cee eel Cee eee et es Mono. Brit. Sil. Trilob, Pal. Soc. p. 174, woodeut, f. 40. 
EURYPTERID®. 
Stylonurus.....,.., Page, 1855...... 
— Logani ......... H. Woodw...,... non 608) [coo fsoay for Sde| pot} ;ooe| fons seclese{oesfees] eel a [eee{eee] Geol. Mag. vol.i, p. 197, t. 10, f. 1, 1864. S. spiniceps, Page, 
7 Ady. Text-book of Geology, p.214. Stylo. Logani, H. 
Woodw. Mono. Brit. Foss. Crust. Pal. Soc. 1874, p. 129, 
t. 24, f. 1, woodeuts, p. 131. 
— megalops......... SA biwontcs svete. ies|leeelanelesspare Bre esl Geel (ao se| (cio |aec eae| ees] xe lee Q. J. Geol. Soc, vol. xv, p. 233, t. 10, f, 9-14. 
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