480 Thilo Krumbach: Hydroidea und Acalephae 



Historisches: Haeckel, Hargitt (Zoological Bulletin 1897, vol. 1). 

 My object in studying the process of regeneration in this jellyfish 

 was to find out . . . by what means it regained its medusa form; 

 whetlier by the development of new tissues and new organs, or 

 whether by a rearrangement of the old part. Further, to find out 

 if, after some time, the organs of a typical mednsa reappeared, and 

 to examine the behaviour of pieces taken from different parts of 

 the body. E. 



— (3). Regeneration: old and new interpretations. — Biological 

 Lectures, Wood's HoU 1899. Boston 1900. p. 185—208. 



Murbach, L. (1). Hydroids from Woods HoU, Mass. — 

 Referat in The American Naturalist Vol. 34, March 1900 (No. 399) 

 p. 237 von „P." (A New Unattached Hydroid). 



— (2). Fresh- Water Aquaria. — The American Naturalist 

 Vol. 34, March 1900 (No. 399) p. 203—206. Boston U. S. A. 



Beschreibt permanent aquaria without changing the water (siehe 

 auch Journ. Applied Micros, July, 1899, Vol. 2 No. 6). 



Nagel, W. A. — Referate: Carlgren (3). Beer, Bethe & 

 V. Uexküll. Loeb (1). Newbegin. 



Naturae Novitates (1, 2). Bibliographie neuer Erscheinungen 

 aller Länder auf dem Gebiete der Naturgeschichte und der exacten 

 Wissenschaften. Herausgegeben von Friedländer & Sohn. 



21. Jahrgang. Berlin, R. Friedländer & Sohn, 1899, No. 1—12. 



22. Jahrgang, 1900, No. 1—12. B. 



Neviani, A. Briozoi, Idroidi a Foraminiferi di Caprio, Giaffa 

 ed Alessandria d' Egitto. Comunicazione prevention. — Bollettino 

 della Societä Romana per gU Studi zoologici. Volume 8: Anno 1899. 

 Fascicoli 1 u. 2. Roma. p. 66. 



Theilt mit, dass Cecconi Hydroiden bei Palaestina u. Cipro ge- 

 funden hat, weiter nichts. 



Newbegin, Marion, J. Color in Nature. A Study in Biology. 

 London J. Murray, in = 8°. XII + 344 p. 1898. 



Kritisches Referat von R. Florentin in Notes et Revue 3. Serie 

 T. 7 No. 1 (des Archives de Zoologie experimentale et generale 

 3. Serie, T. 7, 1899) p. VIII— XIII. — Referat von „P", „Animal 

 and Plant Colors" in The American Naturalist Vol. 34 (No. 405) 

 1900 p. 759—760 („The volume shows little originahty"). Referat: 

 W. A. Nagel, Zoologisches Zentralblatt. 7. Jahrgang. 1900. p. 743 

 —745. 



Enthält auch einen kurzen Bericht über leuchtende Organismen. 



Nöldecke, B. — Referate: Brandes. 



Nordgaard, 0. Siehe Hjort, Norgaard & Gran. 



Nutting, C. C. (1). The variostyles of the Plumularidae, 



— The American Naturalist 1898. [Vgl. Hartlaub (2) A.] 



— (2). The Utility of Phosphorescence in Deep-Sea Animals. 



— The American Naturalist. Vol. 33, October 1899, (No. 394) p. 793 

 —799. 



