TY  - JOUR
T1  - On the Echinidea of the 'Porcupine' Deep-Sea Dredging-Expeditions. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 20
SP  - 491
EP  - 497
PY  - 1871/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1871.0095
M3  - doi:10.1098/rspl.1871.0095
AU  - Thomson, W.
ER  -