On Rhopalocera from Brazil. 165 



does not appear to liave been recognized in Euo-land. It 

 may perhaps be found in the niidUmd and eastern counties 

 (Trent, Ouse, Cam, &c.), where tlie bream-flat is known to 

 occur. 



It seems scarcely necessary to compare the liybrid bream 

 and rudd with the well-known bream and roach hybrid 

 [Abramis brama X Leuciscus rutihis), originally described 

 under the name Abramis huggenhagii^ which is at once 

 distinguished by the more elongate body and the nearly 

 horizontal or slightly oblique mouth. Thompson's record of 

 A. huggenJiagii from near Belfast (Nat. Hist. Ireland, iv. 

 p. 137) evidently refers to one of the hybrid bream and rudd 

 described above. 



EXPLANATION OF THE PLATES. 

 Plate VII. 



Abramis hvama X Leuciscus erythrophthalmus. 



Plate VIII. 

 Abramis blicca X Leuciscus erythrophfJialmns, 



XVII.— T/^e Collections of William John Burchell, D.C.L., 

 in the Hope Department^ Oxford University Museum. 



IV. On the Lepidoptera Rhopalocera collected hy W. J. 

 Burchell in Brazil, 1825-1830. By J. C. Moulton, 

 of Magdalen College, Oxford, 



[Continued from ser. 8, vol. i. p. 42.] 



VI. NrilPHALINJU. 



Mr. J. C. Moulton, of Magdalen College, Oxford, has at 

 my suggestion continued Miss Cora B. Sanders's valuable 

 account of the Brazilian lihopalocera in the Burchell Collec- 

 tion. In our attempts to solve the numerous difficulties 

 wdiich have arisen I have had abundant evidence of the skill 

 and untiring care which he has devoted to this most important 

 and interesting work. E. B. Poulton. 



The following paper forms the continuation of the valuable 

 publications by Miss Cora B. Sanders, ending with No, V. 



