294 Koehler. 



Pictet, C. , Recherches sur la Spermatogenese chez quelques In vert eb res de la Mediter- 



ranee. Mitt. Zool. Stat. Neapel Bd. 10, S. 75, 1891. 

 Proulio, H., Recherches sur les Doroeidaris papillata. Arch, de Zool. Exper. Gen. 



Ser. 2, Bd. 5, S. 287, 1887. 

 Report on the Danish Oceanograpliical expeditions 1908 — 1910 to the mediterranean 



and adjacent seas. Under the direction of Johs. Schmidt. Copenhagen 1912. 



vol. 1: darin Kapitel II. Sven Palitzscli, Measurement of the Hydrogen ion 



concentration in the sea water. S. 2.52. 

 Kunnström, I., Untersuchungen über die Permeabilität des Seeigeleies für Farbstoffe. 



Arkiv Z. Uppsala Bd. 7, S. 103, 1912. 

 Russü, A., Ricerche sulla distruzione e sul rinnovamento del parenchima ovarico nelle 



Ophiureae. Zool. Anz. Bd. 14, S. 15, 1891. 



— Le cellule nutrici del testicolo degli Echinidi. Boll, delle sedute dell'Accad. Gioenia 



Sc. nat. Catania N. S. Fase. 94, S. .34, 1907. 

 Russo, G., La secrezione nell'ovaia cd il significato del follieolo e della pellucida nel 



ovo degli Echinidi. Atti Accad. Gioen. Sc. nat. Catania 1911. Ser. V, vol. IV, 



mem. 10. 

 Seeliger, 0., Gibt es geschlechtlich erzeugte Organismen ohne mütterliche Eigenschaften? 



Arch. Entw.-Mech. Bd. 1, S 203, 1894. 

 Selenka, E., Zoologische Studien I. Befruchtung des Eies von Toxopneustes variegatus. 



Leipzig 1878. 

 Shearer, de Morgan und Fuchs, Preliminary notice ou the experimental hybridi. 



sation of Echinoids. Journ. mar. biol. association Bd. 9, S. 121, 1911. 



— On paternal characters in Echinoid hybrids. Quart, journ. micr. sc. Bd. 58, 2, 



S. 337, 1912. 



— On the experimental hybridisation of Echinoids. Philosophical Transactions of the 



Royal Society of London, Ser. B, Bd. 204, S. 255, 1914. 

 Shull, A. F., Inheritance in Hydatina senta. I. Viability of the resting eggs and 



the sex ratio. Journ. exper. zoology Bd. 15, S. 49, 1913. 

 Steinbrück, H., Über Bastardbildung bei Strongylocentrotus lividus cf und Sphaer- 



echinus granulans 9- Arch. Entw.-Mech. Bd. 14, S. 1, 1902. 

 Tennent, D. H., The dominance of maternal or of paternal characters in Echinoderm 



hybrids. Ibid. Bd. 29, S. 1, 1910. 



— Echinoderm hybridisation. Papers Tortugas Laboratory of the Carnegie Institute of 



Washington Bd. 3, S. 117, 1911. 



Tower, W. L., An investigation of evolution in Clirysomelid beetles of the genus 

 Leptinotarsa. Carnegie Publications. Washington 48, 190(1. 



■ — The determination of dominance and the modification of behaviour in alternative 

 inheritance by conditions surrounding or incident upon tlie germ cells at ferti- 

 lisation. Biol. Bull. Bd. 18, S. 285, 1910. 



Vernon, H. M., The effect of environment on the development of Echinoderm larvae: 

 an experimental inquiry into the causes of variation. Pliilos. Transactions of the 

 Royal Society London Ser. B, Bd. 180, S. 577, 1895. 



— The relation between the hybrid and parent forms of Echinoid larvae. Proc. Royal 



Soc. London Bd. 0.3, S. 228, 1898. 



— Dasselbe, Philos. Transactions of the Royal Society of London, Bd. 190, S. 465, 



1898. 



