in 



Sharp, D., On New Zealand Coleoptera. in : Trans. R. Dublin. Soc. N Ser 



Vol. 3. P. 11. 

 Stierlin, Gust., Coleoptera Helvetiae. Bearbeitet von — . Scbaffhausen Fr 



Rothermel&Co., 1886. 8'>. (p. 1—32.) in : Mittheil. Schweiz. Entomol' 



Ges. 7. Bd. 7. Hft. 

 Uhagón, Serafîn de, Coleópteros de Badajoz. 3. parte, in : Anal. Soc. Espan 



Hist. Nat. T. 16. Cuad. 2. p. 373— (384). 

 Wasmann, Erich, Bemerkungen über die Attelabiden, Rhynchitiden und 



Nemonygiden von Holländisch Limburg, in: Tijdschr. v. Entomol. 



Nederl. Entom. Vereen. 30. D. 4. Afl. p. 309 315. 



Waterhouse, Oh. 0., On some Coleopterous Insects [7] collected by Mr. H. H. 



Johnston on the Cameroons Mountain, in: Proc. Zool. Soc London 



1887. L p. 128. 



II. Wissenschaftliche Mittheilimgen. 



1. The Ectoblastic Origin of the Wolffian Duct in Cheionia. 



(Preliminary Notice.) 

 ByK. Mitsukuri, Ph.D. Imperial University, Tokyo, Japan. 



eingeg. 16. Januar 1888. 



I have for some time past been engaged in working out the deve- 

 lopment of the urogenital system in Trionyx Japonica, Schlegel and 

 Emys Japonica^ Gray. I naturally paid a great deal of attention to the 

 question raised by the researches ofHensen, Spee,Flemming, 

 van Wijhe and Perenyi, viz: whether any part of the urogenital 

 system arises from the ectoblast. In Emys, I have been fortunate enough 

 to hit some stages which show most conclusively that the Wolffian duct 

 arises from the cells proliferated from the ectoblast just opposite the 

 region of the intermediate cell-mass Grenzstrang). In the Trionyx 

 embryos which I possess at present, the ectoblastic origin of the same 

 duct is not shown as beautifully as in those of Emya, but that it does 

 so arise is sufficiently obvious. The formation of the duct proceeds from 

 before backward. 



I hope to be able before long to publish a full account of my in- 

 vestigation. 



Tokyo, Japan, Dec. 6t'i 1887. 



2. Ein bischen Protest. 



Von Fr. Meinert. 



eingeg. 19. Januar 1888. 



Im Zoolog. Anz. No. 241 (1887) p. 18 findet sich als vorläufiges 

 Résumé einer halbvollendeten oder vielleicht ganz vollendeten Unter- 



