154 
CONCORDANCE. 
IV. Echinid.e ...page 141 
Cidaris papillata 146 
Echinus sphaera 149 
miliaris 161 
Flemingii 164 
lividus 167 
neglectus 172 
Ecliinocyamus pusillus 175 
Echinarachnius placenta ... 178 
Spatangus purpureus 182 
Brissus lyrifer 187 
Amphidotus cordatus 190 
roseus 194 
V. Hoi.OTHURIAD.3E ... 197 
Psolus phantapus 203 
Psolinus brevis 207 
Cucumaria frondosa 209 
pentactes 213 
communis 217 
fusiformis 219 
hyalina 221 
Hyndmanni 225 
fucicola 227 
Ochnus brunneus 227 
lacteus 231 
Thyone papillosa 233 
Portlockii 238 
Chirodota digitata 239 
VI. SlPUNCULID-E 243 
Syrinx nudus 245 
papillosus 247 
Harveii 249 
Siphunculus Beruhardus ... 251 
Jolinstoni 254 
Priapulus caudatus 256 
Thalassema Neptuni 259 
Echiurus vulgaris 263 
Echinida page 2 
Cidaris papillata 2 
Echinus esculentus 3 
miliaris 3 
Flemingii 3 
lividus 4 
Ecliinometra Drobachensis . 4 
Ecliinocyamus pusillus 5 
Echinarachnius placenta ... 5 
Spatangus purpureus 6 
Brissiopsis lyrifer 7 
Echinocardium cordatum ... 6 
ovatum 6 
Holothurida 7 
Psoitis phantopus 9 
Psolinus brevis 9 
Pentacta frondosa 9 
pentactes 10 
Thyronidium Drummondii. . . 1 1 
fusiformis 10 
pellucidum 11 
Pentacta Hyndmanni 10 
? Pentacta frondosa, jun. ... 9 
? Pentacta frondosa, jun. ... 9 
Pentacta lactea 10 
Thyone fusus 7 
Thyronidium Drummondii... 11 
Synapta inhaerens 12 
SlPUNCULID-S 13 
Sipunculus nudus 13 
papillosus 13 
Harveii 13 
Stromhi 13 
Johnstoni 14 
Priapulus caudatus 14 
Thalassema rupium 15 
Echiurus oxyurus 15 
II. FORBES’S BRITISH ACALEPIRE. 
Mr. Edward Forbes has given ine the following List of British 
Acaleph.e, about to he published by the Ray Society ; “ all the spu- 
rious and incomprehensible species being rejected .” — March 28, 1848. 
I. Ciliograda. 
Beroc cucumis, O. Fab Beroe cucumis page 37 
pellucida, E. Forbes new species. 
