SON TaN TS. 
CONTRIBUTIONS FROM THE ZOOLOGICAL LABORATORY OF THE 
MUSEUM OF COMPARATIVE ZOOLOGY AT HARVARD 
COLLEGE, E. L. MARK, DIRECTOR. 
No. 1.— The light recipient organ of the copepod, Eucalanus elongatus. 
By Catvin OuIN Esteruy. (6 plates). October,1908 . ... . i 
No. 2.— Spermatogenesis in Acrididae and Locustidae.- By HERBERT 
SPENCER Davis. (9 plates). December, 1908 . ....... 8&7 
No. 3.— Maturation, fertilization, and segmentation of Pennaria tiarella 
(Ayres) and of Tubularia crocea oe By Grorce T. Harairt. 
epiates). October, 1909 . . .%. UR ie ee. Me 
No. 4.— The peripheral terminations of the eighth cranial nerve in verte- 
brates, especially in fishes. By R. C. MuLuLEenrx. (6 plates). No- 
peg GEC UN SS at Wt VY a ane re gee Cott ee ae a ae Fs 
No. 5.— The reactions of amphibians to monochromatic lights of equal 
mmrenaty. oy Henry LAURENS:, June, 191) (2. es atk ie 6251 
No. 6.— The effect of colored light on pigment-migration in the eye of the 
crayfish. By Epwarp C. Day. (5 plates). December, 1911 . . 303 
No. 7.— Effects of radium on living substance. The influence of radia- 
tions of radium upon the embryonic growth of the pomace-fly, Droso- 
phila ampelophila, and upon the regeneration of the hydroid Tubularia 
croceaye by EH. D. Conapon. February, ISM. se. 2. 845 
No. 8.— Effects of radium on living substance. Comparison of the 
sensitiveness of different tissues in the dung-worm Allolobophora 
foetida and in the crayfish Cambarus affinis to the beta rays of 
radium. By EH. 1). Conepon. February, 1912... . . .:. - 362 
No. 9.— On the hair-like appendages in the frog Astylosternus robustus 
(Blgr.). By Witiy Kiikenthal. (5 plates). February, 1912 . . 369 
CONTRIBUTIONS FROM THE ENTOMOLOGICAL LABORATORY OF THE 
BUSSEY INSTITUTION, HARVARD UNIVERSITY. 
No. 10.—A revision of the ants of the genus Formica (Linné) Mayr. 
By Wiutu1amM Morton WHEELER. October, 1913 ..... . . 3879 
