IV 
Seite 
Viertes Heft 
Ausgegeben am 2. November 1909 
Reginald Ri ggles Gates, The Stature and Chromosomes of Oeuothera gigas, 
De Vries. (With plates XXIX and XXX) 525 
J. Duesberg, Note complementaire sur la spermatogenese du rat 553 
Richard Oettinger, Zur Kenntnis der Spermatogenese bei den Myriopoden. 
Sameureifung und Samenbildung bei Pachyiulus varius Fabre. (Mit 
8 Fig. im Text u. Taf. XXXI — XXXIV) 563 
Wm, S. Marshall, A Study of the follicular Epithelium from the Ovary of the 
Walkingstick, Diapheromera femorata. (With 1 figure in the text and 
plates XXXV and XXXVI) 627 
Referate: 
Gregoire, V., Les phenomenes de l'etape synaptique representent-ils une 
caryocinese avortee? P. Büchner) 644 
King, H. D., The Structure and Development of Bidder’s Organ in Bufo 
lentiginosus. P. Büchner 645 
MaTSCHECK, H., Zur Kenntnis der Eireifung und Eiablage bei Copepoden. 
( P. Büchner' 645 
King, H. D., The Oogenesis of Bufo lentiginosus. \P. Büchner) 646 
Stevens, N. M. , Further Studies on the Chromosomes of the Coleoptera. 
i P. Büchner 646 
Pinne v, Edith, Organization of the Chromosomes in Phrynottetix magnus. 
i P. Büchner * 647 
Nowlin, N., The Chromosome Complex of Melanoplusbivittatus Sag. P. Büchner' 648 
Robertson, W. R. B., The Chromosome Complex of Syrbula admirabilis. 
(P. Büchner 648 
MORGAN, T. H., The Production of two kinds of Spermatozoa in Phvlloxerans- 
Fuuctional »Female Produeing« and Rudimentary Spermatozoa. \P. Büch- 
ner 649 
Stevens, N. M., An unpaired Heterodiromosome in the Aphids. P. Büchner' 649 
Stevens, N. M., The Chromosomes in Diabrotica vittata, Diabruticci soror and 
Diabrotica 12-pundala. P. Büchner) 649 
Mc Clung, C. E., The Spermatogeuesis of Riphidinrn fascialum P. Büchner 650 
Davis, H. S.. Spermatogeuesis in Acrididae and Eocustidae. (P. Büchner . 650 
Wilson, E. B., Studies on Chromosomes. |P. Büchner 651 
Wilson. Edm. B., Studies on Chromosomes. P. Büchner) 653 
Wilson, Edm. B., The female Chromosome Groups in Syromastes and Pyrro- 
choris. , P. Büchner 1 653 
Tannrelthek, Geo. W.j Observations on the Germ Cclls oi Hydra. P. Büchner 654 
Beckwitii, Cora Jibson, Prcliminarv Report to the early History of the Egg 
and Embryo of certain Hydroids. (P. Büchner 655 
Hesse, Edmond, Quelques particularites de la spermatogenese chez les Oligo- 
chetes. (P. Büchner ) 655 
Hacker. Val., Uber die Chromosomenbildung der Aulacanthidcn. P. Büchner 655 
Prowazek, S. von, Studien zur Biologie der Zellen. P. Büchner 656 
