__ XXIY — 



450 Bulletin trimestriel. Nr. 2. — Avril — Juin 1891. (Societe botanique de Lyon.) 



451 Schriften der physikalisch-ökonomischen Gesellschaft zu Königsberg i. Pr. 32. Jahr- 

 gang. 1891. 



452 J. S. v. Petenyi, der Begründer der wissenschaftlichen Ornithologie in Ungarn. 

 1799—1855. Ein Lebensbild, verfafst von Otto Herman. Budapest 1891. (K. un- 

 garische naturwissenschaftliche Gesellschaft.) 



453 Annual report of the board of regents of the Sniithsonian Institution. Washington, 

 July 1890. 



454 do. 



455 Bulletin de la societe des medicins et des naturalistes de Jassy. Yol. IY. 

 Nr. 1. 1890. 



456 do. 



Yol. 



IY. 



Nr. 



2. 



1890. 



457 do. 



V 



IY. 



Nr. 



3. 



1890. 



458 do. 



n 



IY. 



Nr. 



4. 



1890. 



459 do. 





IY. 



Nr. 



5. 



1890. 



460 do. 



n 



IY. 



Nr. 



6. 



1890. 



461 do. 



V 



Y. 



Nr. 



1. 



1891. 



462 do. 



71 



Y. 



Nr. 



2. 



1891. 



463 do. 



77 



Y. 



Nr. 



2. 



1891. 



464 do. 



57 



Y. 



Nr. 



3. 



1891. 



465 do. 



V 



Y. 



Nr. 



3. 



1891. 



466 do. 



V 



Y. 



Nr. 



4. 



1891. 



467 do. 



77 



Y. 



Nr. 



4. 



1891. 



468 do. 



n 



Y. 



Nr. 



5. 



1891. 



469 do. 





Y. 



Nr. 



5. 



1891. 



470 do. 



75 



Y. 



Nr. 



6. 



1891. 



471 do. 



n 



Y. 



Nr. 



6. 



1891. 



472 do. 



0 



YI. 



Nr. 



2. 



1892. 



473 do. 



77 



YT. 



Nr. 



2. 



L892. 



474 do. 





vr. 



Nr. 



3. 



1892. 



475 do. 



» 



YI. 



Nr. 



3. 



1892. 



476 do. 



77 



YI. 



Nr. 



4. 



L892. 



477 do. 



77 



YI. 



Nr. 



4. 



1892. 



478 Mitteilungen der medizinisch-naturwissenschaftlichen Sektion des siebenbürgischen 

 Museumvereines. XYII. Jahrgang, 2. Heft. Klausenburg 1892. (Ungarisch.) 



479 The Ottawa Naturalist. May 1891. (The Transactions of the Ottawa Field- 

 Naturalists' Club). Ottawa, Canada. 



480 do. July 1891. 



481 do. August 1891. 



482 do. November 1891. 



483 do. December 1891. 



484 do. February 1892. 



485 do. May 1892. 



486 do. July 1892. 



487 do. August 1892. 



488 do. September 1892. 



