CRUSTACEA. 
CAMBRIAN AND SILURIAN. 
PALABOZOIC. 
CAMBRIAN. LOWER SIL. UPPER SILURIAN. 
| =] ic ETE Els lelelgle|® 
2| |e Asie laiSleisials| 2 
A il eles alRISZ 3g Im} 3 eo Pos 
SPECIES. ale lelS| (Slslala Selassie | 
| 2) leetale scl lsteralelsl Sela! 
AEG MS CSS Seek 
IMS IRIGISIA/S ISIS IE IE IE |< i5ie 
| | if 
CoNOCEPHALID®. 
PAN POLINA, crc secede Salter, 1853 ... 
| — Sedgwickii...... Salt... | alloca lave eae ba lz 
| 
— Var. sub-armata Salt. .........005 Kod hosel doe "3 deol anol fnool arsct foc 
OLENID. 
| Anopolenus ...... Salter, 1864 ... 
| — Henrici ......... GLb canes al eel aco soother rae) lee 
b= FIN PANice secs seeins 8 ore co Ren OEeE Abe e2) boc| food 00a! lood| (Sod Insd a8 
— Salteri............ EFIRCK Si ache scanees Pa aod seal sel loedl aod ladon 
Aptychopsis... H.Woodward,1872 
= ABO eamoaron H. Woodw....... 3641 (on6llooal bod joan 3 Ipco| ot Bas 
— Lapworthi ...... H. Woodw....... eel Bosca eel aoa) Gee % liccctecnt ese 
— Wilsoni ......... H. Woodw....... BF lal lage! local sad Pall Boollooe [eos 
PARES UNesareecsse aaa Goldf. 1839 ... 
— planospinosus,., Portl. ..........++ 880] (00d fos load focal |c6|la60l cod [Saal lace! lel local loa 
JARO: epee eeBOOOO ISCOUL EI vase seeal| oe tee ece|(one son llews| see) Ges rea] oe ecellisea ane 
CoNOCEPHALID®. 
Arionellus ......... Barrande. ...... 
— longicephalus .,. Hicks .......0.06|.00]  [ooe[ecePere{oee|oee|eoefore 
ASAPHIDE. 
| Brong. 1822. 
Dalm, 1826... 
De Kay, 1824 
Basilicus .., Salter, 1849 .. 
Cryptonymus Eichw. 1825, 
Sub- POTS v.00. 
genera | Hemicrypturus Green, 1833 
Asaphagus .., Troost,1834 
Ptychopyge ... Angelin 
Megalaspis .,.Angelin, 1852 
LSymphysurus Goldfuss,1843 
— affinis ............ MM COU cence Slee lles seal ece| ec] coulics 
— arcuatus ......... Td ceperpaco0-G ced ocd] oo ee] aol one) laced eed Heat eee 
— corndensis ...... March wyrccsntess| tea ses] ser tee fees liess lace level oss |scelecal eaa|eee| ere ae [ess 
— dilatatus........, Datn...... BOdGA5) [oad !os9| ioc load lesa) ad load lead eel 68) od] Ice eel led] aed Gol fas 
REFERENCES. 
Siluria, 4ed. p. 51, Foss. 10, f.2; p. 203, Foss. 45, f.5: ib. 
Mem. Geol. Surv. Dee. I, t. 7, f.1-5; ib. vol. iii (Geol. 
N. Wales), p. 308, t. 7, £.1-5. 
Var. of A. Sedgwickii. Siluria, 4 ed. p. 51, Foss. 10, f. 3 
(compressed); ib. Mem. Geol. Surv. vol. iii (Geol. N. 
Wales), t. 7, f. 3. 
Q. J. Geol. Soc. vol. xx, p. 236, t. 13, f.4,5; ib. vol. xxi, 
p. 481, f. 2, 3, woodcut; Brit. Assoc. Rept. 1865, p. 
285. 
Q. J. Geol. Soc. vol. xxviii, p.179, t. 7, £. 1-7. 
Q. J. Geol. Soe. vol. xxi, p. 478, woodcut, p. 481, f. 1; ib. 
vol. xxviii, p. 179, t. 7, £. 8-11; Brit. Assoc, Rept. 
1865, p. 285. 
Geol. Mag. vol. ix, p. 565, 1872. 
Geol. Mag. vol. ix, p. 565, 1872. 
Geol. Mag. vol. ix, p. 565, 1872. 
Vide Cheirurus gelasinosus. 
Vide Dithyrocaris. 
Q. J. Geol. Soc. vol. xxviii, p.176, t.5, £. 20-26. 
Tsotelus, Synop. Brit. Pal. Foss. p. 169, t. 1 F, f. 3. As- 
aphus, Salt. Mem. Geol. Surv. vol. iii, p. 310, t. 8, f. 15, 
t.12, f.4; ib. Salt. Mono. Brit. Sil. Trilob. Pal. Soc. 
p. 164, t. 24, £.13, 14. 
ide A. rectifrons. 
Vide Ogygia corndensis. 
Vide Ogygia Portlockii. 
41 
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