Pomona College, Claremont, California 125 
The following species of starfish were studied: Linckia colum- 
bie (Gray), Orthasterias gonolena (Verrill), Pisaster capitatus 
(Stimp.), P. ochraceus (Brandt), Astropecten erinaceus (Gray), 
Asterina miniata (Brandt). Except for size and difference due to 
body form, the nervous structures in these species were much alike. 
BIBLIOGRAPHY 
Cuenot, L. 1890 
Le systeme nerveux enterocoelien des echinoderns. Comp. rend. 
tcxi. 
Hamann, O. 1883 
Beitrage zur Histologie der Echinodermen. 1. Die Holothurien 
u. das Nervensystem der Asteriden. Zeit. Wiss. zool. bd. xxxix. 
1885 
2. Die Asteriden Anat, u. Hist. untersucht. Jena. 
Jickeli, C. F. 1888 
Vorlaufige Mitt. ueber das nervensystem der Asteriden. Zool. 
Anz. bd. xi. 
Meyer, R. 1906 
Untersuchungen ueber den feineren Bau des Nervensystems der 
Asteriden. (Asterias rubens.) Zeit. Wiss. zool. bd. Ixxxi. 
Owsjannikow, Ph. 1871 
Ueber das nervensystem der Seesterne. Bull. de |’ acad. imp. des 
sc., de St. Petersburg. txv. 
Wilson, H. 1860 
The nervous system of the Asteride. Linn. Soc. London, Vol. 
XXil. 
(Contribution from the Zoological Laboratory of Pomona College) 
