O lO 
PAGE 
Productus hnmerosus, Sow. = P. sub-lsevis. PI. xxxvi, fig. 2 . 
. 306 
— LlangoUensis, Dav. 
. 307 
— proboscideus, de Verneuil. PI. xxxvi, fig. 13 . 
. 311 
— scabriculus, Martin. PI. xxxv, fig. 3 . . . . 
. 308 
— semireticulatns, Martin. PI. xxxv, figs. 1, 2, and pi. xxxvi, figs. 12 and 17 
. 307 
— tessellatua, de Kon. PI. xxxvi, figs. 3, 4, 5 . 
. 310 
— ■ shell structure in P. aculeatus, Martin 
. 299 
' — — cora, d'Orb. ..... 
. 299 
— — costatus, Sow. PI. xxxvi, figs. 18 — 20 
. 298 
— — fimbriatus. Sow. . . 
. 300 
— — giganteus, Martin .... 
. 296 
— — latissimus, /. Sow. .... 
. 297 
— — longispinus, Sow. PI. xxxvi, figs. 14—16 
. 298 
. — — mesolobus, Phil. _ . 
. 299 
— — punctatus, Martin- .... 
. 298 
— — pustulosus, Phil. .... 
. 300 
— — scabriculus, Martin . . . . 
. 300 
— — semireticulatus, Martin. PI. xxxvi, fig. 17 . , . 
. 297 
— — sinuatus, de Kon. 
. 299 
— — spinulosus, /. Sow. .... 
. 299 
— ■ — undatus, Befr. ..... 
. 300 
— — Youngianus, Bav. .... 
. 299 
Retzia carbonaria, Bav. PI. xxx, fig. 16 . 
. 283 
Ehynchonella Brockleyensis, Dffw. PI. xxxiv, fig. 14 . 
. 285 
— Glassii, Bav. PI. xxxiii, fig. 10 . 
' 285 
— reflexa, de Koninck. PI. xxxiii, figs. 7 — 9 .... 
. 284 
Rhynchopora Youngii, PI. xxxiii, fig. 11 
. 286 
SpiRiFERiDiE, spiral appendages of . 
269—276 
Spirifera glabra, Martin, sp. PI. xxxii . . 
. 274 
— lineata, Martin (character of spines). PL xxxii, figs. 6 — 11 
. 275 
— pinguis, var. rotundata, Sow. Pis. xxxi and xxxii 
. 274 
— striata and var. Mosquensis, Fischer.^ Pis. xxxi, xxxii, and xxxiv 
. 274 
— trigonalis, Martin. PI. xxxiv, figs. 2, 3, 4 . 
. 276 
Spiriferina Etheridgei, Bav. PI. xxxiii, fig. 6 . 
. 278 
— laminosa, M' Co?/. 
. 277 
Streptorhvnchus crenistria, Phillips. Pi. xxxvii, figs. 1 — 5 
. 288 
— — var. cylindrica, M'Coy. PI. xxxvii, figs. 6, 7 . 
. 290 
— — var. senilis, Phillips .... 
290 
Strophomena rhomboidalis, var. analoga, Phil. PI. xxxvi, fig. 23 . 
. 291 
Syringothyris cuspidata, Martin, sp. PI. xxxii, fig. 16; pi. xxxiii, figs. 1, 2, 3 
. 278 
— distans, Sow., sp. PI. xxxiii, figs. 4, 5 . , . . 
. 281 
— subconica, Martin, sp. Pi. xxxii, fig. 17 . 
. 281 
Terebratula sacculus, Martin ...... 
. 269 
1 Prof. L. de Koninck assures me that the true Russian Spirifera mosquensis has not been found in 
Great Britain, and that what has been referred to it are mere variations in shape of Spirifera striata, and 
I feel inclined to adopt the professor's view. 
41 
