138 



on p. 130, he says: »Lc système vasculaire est semblable à celui des 

 Terebelles, si bien connu, grâce aux beaux travaux de Mr. M. Ed- 

 wards«, and further on p. 11^9, speaking of l'or. ìmiltisctosa , «des 

 vaisseaux, dont la distribution est entièrement conforme aux descrip- 

 tions de M. Edwards«. I think that Mr. Salensky, like myself, 

 merely followed in Claparède's footsteps, when he wrote «depuis les 

 belles recherches de Milne Edwards sur la circulation du sang chez 

 les Annélides, etc.«. 



A short time after the publication of my Note, I received by tlie 

 kindness of Mr. Wirén his splendid paper »Om circulations- och 

 digestions-organen hos Ampharetidae, Terebellidae och Amphicteni- 

 dae*«; in this paper, a model of thorough examination as well as of 

 great appreciation of the researches of older naturalists, he demon- 

 strates, that our views about the vascular system of the Terebellidae etc. 

 are not quite correct. He recognized that the dorsal vessel (petit vais- 

 seau median^, discovered by M. Edwards, does not exist, but that 

 this author probably has been misled by the presence of the musciilus 

 parieto-intestinalis superior, that the intestinal vascular system of these 

 Annelids merely consists of a system of lacunae, without proper walls, 

 between the layers of the intestinal wall, and that the so-called dorsal 

 and ventral vessels are nothing else but dilatations of these lacunae, 

 which in some species take the shape of an incompletely closed canal. 

 Whether Mr. Cunningham discovered this arrangement of the vas- 

 cular system of the Terebellidae, independently from Mr. Wirén, 

 perhaps even before him, is not evident, because Wirén's paper is not 

 quoted by him ; but he is not in the right in reproaching me, because 

 1 quoted facts, the inexactitude of which was not demonstrated on the 

 date of publication of my Note. 



Lcydcn Museum, am 'J. Februar 1888. 



2. Entwicklung des Amnion, Wolff'schen Ganges und der Ällantois 

 bei den Reptilien. 



(Auszug aus dem Ungarischen. M. tud. akademiai »Ert esito« 1888.) 

 Von Prof. Dr. Josef v. Pcrcnyi in Kecskemet (Ungarn), 



cingeg. 18. Februar 1888. 



Die Untersuchungen wurden an Laccrta viridis, tnnralis und acjilis 

 vollzogen. 



Zur Härtung diente die von mir empfohlene Flüssigkeit und zwar 

 nach mehrjähriger Probe in folgender Modification: 



8 Kongl. Sveneka Vetenskaps-Akademicns Handliogar. 21. 13d. 1885. No. 7. 



