30 ANNUAL REPORT OF THE 



Memoirs: — 



Vol. XLIII. 



The American Characidae. By Carl H. Eigenmann. Pt. 1. pp. 102. 

 16 plates. August, 1917. Pt. 2. pp. 106. 22 plates. January, 1918. 

 Report : — 



1916-1917. 39 pp. December, 1917. 



Zoological Laboratory. 



Contributions: — 



295. Van Heusen, A. P. — The skin of the catfish (Amiurus nebu- 



losus) as a receptive organ for light. Amer. journ. physiol., 

 September, 1917, 44, p. 212-214. 



296. Parker, G. H. and Van Heusen, A. P. — The responses of the 



catfish, Amiurus nebulosus, to metallic and non-metallic rods. 

 Amer. journ. physiol., October, 1917, 44, p. 405-420. 



297. Parker, G. H. — The pedal locomotion of the sea-hare Aplysia 



californica. Journ. exper. zool., October, 1917, 24, p. 139-145. 



298. Parker, G. H. and Van Heusen, A. P. — The reception of 



mechanical stimuli by the skin, lateral-line organs and ears 

 in fishes, especially in Amiurus. Amer. journ. physiol., 

 November, 1917, 44, p. 463-489. 



299. Parker, G. H. — The power of suction in the sea-anemone 



Cribrina. Journ. exper. zool., November, 1917, 24, p. 219- 

 222. 



300. Parker, G. H. — The activities of Corymorpha. Journ. exper. 



zool, November, 1917, 24, p. 303-331. 



301. Stringer, C. E. — The means of locomotion in planarians. 



Proc. Nat, acad. sci., December, 1917, 3, p. 691-692. 



302. Olmsted, J. M. D. — The regeneration of triangular pieces of 



Planaria maculata. A study in polarity. Journ. exper. zool., 

 February, 1918, 25, p. 157-176. 



303. 304. Hecht, S. — The physiology of Ascidia atra Lesueur. I. 



General physiology. II. Sensory physiology. Journ. exper. 

 zool,, February, 1918, 25, p. 229-299. 



305. Hecht, S. — The physiology of Ascidia atra Lesueur. III. 



The blood system. Amer. journ. physiol., February, 1918, 

 45, p. 157-187. 



306. Bray, A. W. L. — The reactions of the melanophores of Amiurus 



to light and adrenalin. Proc. Nat. acad. sci., March, 1918, 

 4, p. 58-60. 



