PALXOZOIC. CRUSTACEA, CAMBRIAN AND SILURIAN. 
CAMBRIAN. LOWER SIL. UPPER SILURIAN. 
a 3 es ce cet feved | een eee esr esl ce 
=| |g el S(S/2\S eel elele 
Bl le Seale alails|s 
Alalmels 3/5) a/e\o B\p} 3 |e 
SPECIES. sldlels| (=| slS lal SSIS IRS ia lela, REFERENCES. 
A) als) s/s |S IAS lS )S1S) 518) 5\3]2 
ARE BEE Be eeeeede 
HISTSIEI4ISISISIS IF IE IE IS lip a Ia 
Primitia (continued). 
— variolata ......... COMES Mare saleeeneals Boo| (ob! fae fact {one rem ienelleee [eee veelecel ok [eee[eeefeee{eeeleee] Ann, Mag. Nat. Hist. 3 ser. vol. xvi, p. 418, t.13, £.6 a, b; 
var, paucipunctata, p. 419, t.13 f,¢,d 
PROETIDE. 
SPTOOLUS ieee seco Steininger, 1831 
For besia ...c..00s M ‘Coy, 1862... 
Aonia...... ... Burmeister 1844 : 
— latifrons ......... WES Coy) aacessh eat toon (a8) icior (een cecfecefecePoe fore] ok [ak | x [eeefeee[eee}...| Morbesia, Synop. Sil. Foss. Irel. p. 49, t. 4, f.11; ib. Brit. 
Pal. Foss. p. 174. P. latifrons, Salt. Mem. Geol. Surv. 
is li, pt. 1, p. 337, t. 6, f.1; Siluria, 4ed. p. 235, Foss. 
Bre 
— Stokesii ......... Murch. ......... Peal bce eee| luce som seefeee|eePoe [ene] ae | [ok [eefor[ee lan! Asaphus, Sil. Syst. p.656, t.14,f.6. Forbesia, M‘Coy, Brit. 
Pal. Foss. p. 174. Proetus, Siluria, t.17, f. 7; Loven. 
of. vers. 1c. 1845. 
Protichnites ...... R. Owen, 1852. 
— Scoticus ......... GI Upson beans cual eee tacellwaal eis a lleodl eed eo Loplasalleeaioncimenttces «[..-| Siluria, 4ed. p.151, Foss. 24. 
ASAPHID®. 
Psilocephalus .., Salter, 1866 ... 
— inflatus ..... WEN QUES cee caisieseees =adllbee|caal |<] bad) 650} oor fnod) Yoon vesfevs[eee]eee|ses/eee[eee[aee] App. Mem. Geol. Surv. vol. iii, p. 316, woodcut, f.8; ib. 
Salt. Mono. Brit. Sil. Trilob. Pal. Soc, p. 176, woodcut, 
£. 41. 
— innotatus ...... ISGLES. Goucaicastes: hop eae ods local (nal lodcl ees) [eos seelece[ece|eeeleesleee[eee[eee! Mono, Brit. Sil. Trilob. Pal. Soc. p.175, t. 20, £.13-19; ib. 
App. Mem. Geol. Sury. Geol. N. Wales, vol. iii, p. 315, 
t. 6, f. 9-12. 
EURYPTERID®. 
Pterygotus......... Agassiz, 1839... 
Himantopterus Salter, 1856 ... MEPOSTOMATA. 
Vide Slimonia, . 
— acuminatus...... SQlt. .e. 
Mem. Geol. Surv. Monog.I, p. 95, t. 13, £. 8-13, 15,16; ib. 
H. Woodw. Mono. Foss, Crust. Pal. Soc. p. 88, 90, f. 21-23. 
— bilobus............ isi7liats eaecencoeiG Pes (ec led feo tee Fadi beel [eee feed ses[ece{ece[ece]ooe] ae [eee] eee] Hltmantopterus, Salt. Q. J. Geol. Soc. vol. xii, p. 29, f.-1; 
ib. Siluria, 2 ed. p.155, Foss. 21; ib. Mono, vol.i, Brit. 
Org. Rem. Mem. Geol, Surv. 1859, p. 39, t.1, f. 1-12. 
Mono. Brit. Foss. Crustacea (Merostomata), Pal. Soe, 1869, 
— arcuatus ......... SALES saccoascaens meallaen | eee| eee lcs etal eal ings leap acs|fonel eel eget ace] Mell cael eas 
— ib. var.a, inornatus H.Woodw..,.|...|...|...| Jee Fadl issllocd aoe baal (oon) (don Isao loca hes |foce| lan 
p. 55, t. 10, f. 1-3, woodcuts, p. 56-59, 61. 
— ib. var.B, erassus... H.Woodw....|...|.+|)...)-00fe- Seallecel (ese [oe vesleee{eeefaee|oce] ge |-ee[eee] Mono. Brit. Foss. Crust. (Merostomata), Pal. Soc. p, 62, t. 11, 
fete 
— ib. var. 6, acidens,.. H.Woodw....|...|...|...).0-Jee Bea God) foscl aoe ve-{eeeese{eceleee] ye [eee{eee] Mono, Brit. Foss. Crust. (Merostomata), Pal. Soc. p. 68, t. 12. 
— Banksii ......... ISGLEa se necoentes Bool eet tonal bel (Sci Bont ec feciol (een vesfessfecsfece]oce| ge [eee] a | ZZémantopterus, Q. J. Geol. Soc. vol. vii, p. 325 ib. p. 99, 
t. 2, f.5; ib. Pt. Siluria, 4ed. p. 239, Foss. 67, f. 2. 
Pterygotus, Mem. Geol. Surv. Mono. I, p. 51, t. 12, f. 22- 
46; ib. Woodw. Mono. Foss. Crust. Pal. Soc. p. 72, t, 16, 
f. 2-6. 
SI PIP AB: cecesnesnas SGliay weieaescaers Bol ooo fagal lone [o6d 605 (o0r| [eae fso5 vec{ecelecees]oee] ye [eee] a¢| Mem. Geol. Surv. Mono. I, p. 83, t.8,9. P. problematicus, 
Banks, Q. J. Geol. Soe. vol. xii, p.93, &e.; ib. H. Woodw. 
Mono. Foss. Crust. Pal. Soc. p. 79-85, f.17. 
— leptodactylus ... MCoy  ...scccee|ses|oeefees|eeefeee AB es lnoey (Shel ice selene spel w..{...|...| Doubtful. Probably telson of another species. 
Mem. Geol. Surv. Mono. I, p. 79, t- 14, f. 1-13, t. 9, £18? 
— Ludensis......... WSQLE  ecccvausuce ccalarellecs ieealines | (Ae eect bon 64] lad (aoe coal toee| aoa) ec Nhe 
t.12, f. 1-5; ib. H. Woodw. Mono. Foss. Crust. Pal. Soc. 
p. 76, t.16, £. 7-9; p. 78, £.15, 16. 
— MAXIMUS .ersee ees ISLE; Breen ccseee Pealiecativce weap use Cilecaliecaleee sefece|eee|eee{eee{eee{eee]ee-| (ede Slimonia acuminata. ; 
66 
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