[MATTHKwJ STUDIES ON CAMBRIAN FAUNAS 20l 



Description op the Plates. 

 Plate I. 



Fig. l.—Linnarssonia Bclfi, Dav. inut. mag^ia, n. mut. n Dorsal valve partly exfoli- 

 ated, Mag. Ï. b. Ventral valve exfoliated at the beak, Mag. J.— a. From con- 

 glomerate limestone, 6 from dark gray shale. Both of Div. Id''. Hastings 

 Cove. See p. 1(>9. 



Fig. 2,—Agnostus Natlwrsti, Brogg. var. Mag. f. From dark gray shale. Div. 

 If?-', Hastings Cove. Seep. 171. 



Fig. ^.—Agnostus punctuosus, Ang. var. Mag. f From conglomerate limestone. 

 Div. lr/'% Hastings Cove. See p. 172. 



Fig. 'i.—Agnostus 2ici>'i'>'f>'ons, Linrs.— a. Head-shield of a young example. Mag, 

 Î— 6. Pygidium (supposed of this species) Mag. f—a from dark shale, 6 from 

 conglomerate limestone. Both from Div. UP, Hastings Cove. See p. 1 73. 



Fig. ô.—Agno,<ttus jxirrifrons, cf. var. iie^jos Brogg. Pygidium, Mag. }. Conglomer- 

 ate limestone. Div. IcZ", Hastings Cove. Seep. 172. 



Fig. Q.—Agnostun umbo, mut. Mag. j— a. Head-shield— ^. Pygidium. From con- 

 glomerate limestone of Div. \d'\ Hastings Cove. See p. 173. 



Fig. l.—Agnostus lavif/afu.s, Dalm. var., Headshield. Mag. J. From conglomerate 

 limestone of Div. Id'', Hastings Cove. See p. 173, 



Fig. 8. — Conocoryphe imstulosa, n. sp. Middle piece of the head-shield. Mag. ^. 

 From a phosphate nodule of the conglomerate limestone, Div, Id», Hastings 

 Cove. See p. 1 7-1. 

 ig. 9. — Paradoxides Abenacus, mut. From the conglomerate limestone. — a. 

 Middle piece of the head-shield natural size. — b. a pleura Mag. ï. — c. a pos- 

 terior joint of the thorax. Mag. f.— All of Div. Id", Hastings Cove. See 

 p. 175. 



Plate il. 



Fig, 1. — Paradoxides Abenacus. Form 2.— a. Middle piece of the head-shield, 



natui-al size. — b. Movable cheek, natural size. — c. Anterior lobe of hypos- 

 tome. Mag. 1.—d. Last three joints of the thorax and the pygidium. 



Mag. f . (The broken parts are restored from a specimen of tne P. Abenacus 



bubzone.) AH from dark gray siliceous shale. Div. Irf", Hastings Cove. 



See p. 175, 

 Fig. 2. — Agt-aulos ceficrphal lis, Barr var. car hiatus n. var.— a. Middle piece of the 



head shield. Mag. f. — b. The same in profile. From conglom-limestone. 



Div. Id-', Hastings Cove. See p. 176. 

 Fig. 3. — Agraulos ho/occ2)/ialus.—a. Middle piece of the head-shield, Mag, f, — 6. 



Same in profile. From conglom-limestone. Div. Id'', Hastings Cove. See 



p. 176. 

 Fig. 4.— Agraulos Robert i, n. sp.— a. Middle piece of the head-shield. Mag, '(—b. 



Same in profile. From conglom-liniestone. Div, Id", Hastings Cove, See 



p. 177. 

 Fig, o.—Agraidos (?) nanus, n, sp,— a. Middle piece of the head-shield, Mag. f. — 6. 



Same seen in profile. From conglom-limestone. Div, Id'', Hastings Cove. 



See p, 178, 

 Fig. Q.— Agraulos {^) jnisillus, n. sp.— a. Middle piece of the head-shield, Mag. ^.— b. 



Same seen in profile. From conglom-limestone. Div. Id", Hastings Cove, 



Seep, 178. 

 Fig, l.—Liostracus validus, n. sp, — a. Middle piece of the head-shield. Mag. f.— 6. 



Same in profile. From siliceous shales. Div. Id'', Hastings Cove. See 



p. 179. 



^cy 



