2l6 H. P. KJERSCHOW-AGERSBORG. 



Coe, Dr. W. R. 



'12 Echinoderms of Connecticut, Hartford. Bulletin No. 19: 1152. Con- 

 necticut Geological and Natural History Survey. 

 Cole, Leon J. 



'13 Direction of Locomotion of the Starfish (Astcrias forbesi). Jour. Exp. 



Zool., Vol. 14 : 1-32. 

 Crozier, W. J. 



'20 Notes on Some Problems of Adaptation, III. BIOL. BULL., Vol. 39: 



i 16129. 

 Cuenot, L. 



'gi Etudes morphologiques sur les Echinodermes. Arch, biol., Vol. n: 



313-680. 

 Delage, Yves, et Herouard, Edgard. 



'03 Traite de zoologie concrete. Ill : 1-495 ; 53 pis. Les echinodermes. 



Paris. 

 Jennings, H. S. 



Behavior of the Starfish Astcrias forreri de Loriol. Univ. Cal. Publi- 

 cations in Zoology, Vol. 4: 53185. 

 Kjerschow-Agersborg, H. P. 



'18 Bilateral Tendencies and Habits in the Twenty-rayed Starfish, Pycno- 



podia helianthoides (Stimpson). BIOL. BULL., Vol. 35: 232-254. 

 Lankester, E. Ray. 



'oo A Treatise on Zoology, Part 3 : 1-344. The Echinodermata. London. 

 Ludwig, H. 



'99 Dr. H. G. Bronn's Klassen und Ordnungen des Thier-reiches, Buch 2 : 



461-744; 12 pis. Die Seesterne, Leipsig. 

 MacBride, E. W. 



'96 The Development of Asternia gibbosa. Quart. Jour. Micro. Sci., Vol. 



38: 339-412. 



'06 Echinoderms. Camb. Nat. Hist., pp. 427-502. London. 

 Rathbun, Richard. 



'87 Description of the Species of Heliaster (a genus of starfishes). Proc. 



U. S. Nat. Mus., Vol. 10: 440-449. 

 Ritter, Wm. E., and Crocker, Gulielma R. 



'oo Multiplication of Rays and Bilateral Symmetry in the Twenty-rayed 

 Starfish, Pycnopodia lielianthoides (Stimpson). Proc. Wash. Acad. 

 Sci., Vol. 2 : 248-274. 

 Sedgwick, Adam. 



'09 A Student's Textbook of Zoology, Vol. 3: 115-313. Echinodermata. 



London. 

 Shipley, Arthur. 



'93 Zoology of the Invertebrata, pp. 22425. London. 

 Verrill, Professor A. E. 



'14 Monograph of the Shallow-water Starfishes of the North Pacific Coast 

 from the Arctic Ocean to California. Harriman Alaska Expedition, 

 Vol. 14: 1-408. Pt. I; Pt. II, Plates. 



