202 Biologia Centrali-Americana. 



Diptera. Vol. I. Cecidomyidae Empidae by C. R. Osten- 



Sacken, with Supplement by Williston, Aldrich, 

 Wheeler and Melander. 1886—1901. 386 pg. 

 roy. 4. with 6 coloured plates. complete. 



Vol. II. Oestridae by F. M. v. d. Wulp. 1888—1900. 

 Pg. 1 — 428. roy. 4. with plates 1 — 12 coloured. 

 As far as published 



Vol. III. Syrphidae by S. W. Williston. 1891—92. 

 Pg. 1 — 89. roy. 4. with plates 1— 2 coloured. As 

 far as published. 



The 3 volumes as far as published Mark 240. — 



Neuroptera by a. e. Eaton. 1892— 1902. p g . 1—96. 



roy. 4. with plates 1 — 4 partly coloured. As far 

 as published. Mark 26.— 



Orthoptera by H. de Saussure, L. Zehntner, A. Pictet, 

 de Bormans, L. Bruner and A. P. Morse. 1893 

 —1902. 



Vol. I (468 pg.), II. Pg. 1—32. roy. 4. with 22 

 coloured plates. As far as published. Mark 138.— 



— Vol. II separately. Acridiidae by L. Bruner and A. P. 



Morse. 1900—1902. Pg. 1—32. roy. 4. As far as 

 published. Mark 6. — 



The continuation of the parts still in progress 

 will be supplied by R. Friedländer & Sohn as soon 

 as published at the rate of: 



each sheet of text Mark 1.50 

 each plate Mark 2. — , 



the purchaser taking the Obligation, to accept the 

 continuation up to the completion of the different 

 parts. 



Red. von E. Buacbbeck in Berlin. 



Druck von Otto Dornblütb in Bernburg. 



