156 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Sinéty, R. de. 
701. Recherches sur la Biologie et Anatomie des Phasmes. La Cellule, 
Tom. 19, pp. 117-278, 5 pl. 
Spichardt, C. 
86. Beitrag zu der Entwicklung der minnlichen Genitalien und ihrer 
Ausfiihrginge bei Lepidopteren. Verhand. d. naturh. Ver., Bonn., 
Jahrg. 43, pp. 1-34, Taf. 1 
Stevens, Nellie M. 
03. On the Ovogenesis and Spermatogenesis of Sagitta bipunctata. 
Zool. Jahrb., Abth. f. Anat., Bd. 18, pp. 227-240, Taf. 20, 21. 
Stevens, Nellie M. 
04. On the Germ Cells and the Embryology of Planaria simplissima. 
Proc. Acad. Nat. Sci., Phila., Vol. 56, pp. 208-220, pl. 13-16, 5 textfig. 
Stevens, Nellie M. 
104°. Further Studies on the Ovogenesis of Sagitta. Zool. Jahrb., 
Abth. f. Anat., Bd. 21, pp. 243-252, Taf. 16. 
Stevens, Nellie M. 
05. A Study of the Germ Cells of Aphis rosae and Aphis oenotherae. 
Jour. Exp. Zool., Vol. 2, pp. 313-333, 4 pl. 
Stevens, Nellie M. 
05°. Studies in Spermatogenesis with especial Reference to the ‘ Ac- 
cessory Chromosome.”’ Carnegie Inst. Washington, Publ. 36, [Part 1], 
32 ps, (pl. 
Stevens, Nellie M. 
106. Studies on the Germ Cells of Aphids. Carnegie Inst. Washington, 
Publ. 51, 28 p., 4 pl. 
Stevens, Nellie M. 
106". Studies in Spermatogenesis. Part 2. Sex Determination. Car- 
negie Inst. Washington, Publ. 36, Part 2, pp. 33-94, pl. 8-15. 
Struckmann, C. 
05. Hibildung, Samenbildung und Befruchtung von Strongylus filaria. 
Zool. Jahrb., Abth. f. Anat., Bd. 22, pp. 577-628, Taf. 29-31, 18 Textfig. 
Sutton, W. S. 
700. The Spermatogonial Divisions in Brachystola magna. Kansas 
Univ. Quart., Vol. 9, pp. 135-160, pl. 32-35. 
Sutton, W. 8. 
702. On the Morphology of the Chromosome Group in Brachystola. 
magna. Biol. Bull., Vol. 4, pp. 24-39, 11 textfig. 
Sutton, W. 8. 
:03. The Chromosomes in Heredity. Biol. Bull., Vol. 4, pp. 231-251. 
Tichomirow, A. 
98. Zur Anatomie des Insektenhodens. Zool. Anz., Bd. 21, pp. 623- 
630. 5 Textfig. 
Toyama, K. 
94, On the Spermatogenesis of the Silk-Worm. Bull. Coll. Agric., 
Imp. Univ. Japan, Vol. 2, pp. 125-157, pl. 3, 4. - 
