Parker, G. H. 



1919. The Elementary Nervous System. (Philadelphia 



Lippincott) 229 pp., 53 figs, in text. 

 Plessner, H. 



1913. Untersuohen iiber den Physiology der Seesterne. 

 Zool. Jarb. Abt, f. Zool.,33, 361-386, 7 figs, 



' AM- 



in text. 

 Preyer, W. 



1886. Ueber die Bewegungen der Seesteme. Mit. a.d. 



Zool. Stat. zu. Heap., 7, 27-127; 191-233, pi. 7, 



>*^-i 



27 figa. in text. 

 Prouho, H. 



1890. Du Sens de 1'Odorat ohez. les e'toiles de msr. 

 Gompt. Rend. Aoad. Sciences, Paris., 110, 



A-*-^- C F 



1343-1346. 

 Reamur, R. A. P. de 



1710, Du mouvement progressive et de quelqu^s autres 



mouvements de di verses espeoes de coquillages, 



orties, et ^toiles de mer. Mem. Acad. Roy. 



Science Paris, 17^0, 439-490, PI. 9-12. 

 Romanes, G. J. and Kwart J. G. 



1831. Observations on the locomotor system of the 



jjJohinodermata. Philos. Trans. Roy. Soc. Lon^. 



3^72, Part HI, 829-882, pi. 79-85. 

 Romanes, G* J. 



1883. Observations on the physiology of the eohinodermata 



J. Linn. Soo. 17, 131-137. 

 1885. Jellyfish, starfish, and sea-urchin. (New York. 



Appleton)XI t 323 pp, 63 figs, in text. 



