Pomona College, Clarcmont, California 



Neben Tastapparate bei tiii/rins mullitornis. 



Arch. f. Mic. Anat. XVIII, pp. 34_^-346. 

 Haeckel, E 



Ueber die Augen unci Ncr\'eii der See>tfrnc. 



Zeit. f. VViss. Zool., 10, 1860. Tat. 11, pp. 183-190. 

 Ham.ann, O. 



Beitrage zur Histologic der Echiiiodermcii, 2, Die Aster. 



Anatomie u. Hist. Untersuclit. 7 pi. Jena. 

 Pfeffer, W. 



Die Sehorgane der Seesteine. 



Taf. 41, pp. 5-23-550. Zool. Jalnhucli. Anat. 14. 

 JOURDAI.V 



Sur les Venx de I'Ast. rnliens. 



Comptes-rendus de I'Acad. des. Sc. Tome 60, 1865, p. 103. 

 \\'ll.SON, N. 



The Nervous System of Asteridse; with observations on the organs of sense. 



Trans, of the Linnean Soc. 1862. vol. 21. pp. 107-123. 3 PI. 



INDEX TO FUU'RES 



Fig. 1. Ventral and lateral views of eve-pad I'isiistcr iiipilalns. showing general 



relationship to terminal tentacle. .Xy. 

 Fig. 2. Ventral view of eye-pad of Orthiisin i/niiali'iui. X9. 

 Fig. 3. \'entral \'iew of e\'e pad of l^i.uistt'r .ot /nenfus. X9. 

 Fig. 4. \'entral view of eye-pad of .1 siniriii miiiiatii. .\9. 

 Fig. 5. N'entral view of eye-pad of l/imkui inlomhitii-. X9. 

 Fig. 6. Ventral view of eye-pad of .1 sliinpi'din rriniiifui. X9. 

 Fig. 7. Ocellus froin Orlliastn iionnlcnii to show general form. X350. Drawn by 



camera lucida. 

 Fig. 8. Ocellus from Liiiikiii inlamliiar to show general features. X350. Camera 



lucida. 

 Fig. 9. Ocellus from Asleiinn mitiiiitti. .\350. Camera lucida. 



note the clear central margin of pit. 

 Fig. 10. Tactile organ from terminal tentacle of I.iinhiii lolombia 



showing papillae and details. Camera lucida. .\350. 

 Fig. 11. Single sensory cell from l.iiiikui t olum/iiiir. Very greatly inagtiified. 

 Fig. 12. Sensory cells from Asterias nihrns showing plgmetit. Reproduced from 



Cuenot. Osmic acid. Greatly magnified. 



Fig. 13. General view of eye-pad of Jslci n^idiii criiii 



lucida. 

 Fig. 14. Simple ocellus in an Aslnias. Supportive cells dark 



Reproduced from Pfeffer. Diagramatic. 

 Fig. 15. A more complex ocellus from .1 stndpcclin mulleri. 



features as above. From Pfeffer. Diagramatic. 



CJeneral view, 

 Cieneral view 



us. X350. Camera 

 Sensory cells lighter. 

 Note the lens, other 



