134 MR. p. L. SCLATER ON TWO CURIOUS DUCKS. [Feb. 7, 



inner margins not meeting. Anterior femora armed with three 

 strong spines beneath. 



Long. 22 millim. ; exp. tegm. 63 miUim. 



Hab. Ponape (Caroline archipelago). (Mus. Godeffroy ; coll. 

 Dist.) 



EXPLANATION OF PLATE VII. 



Fig. 1, la, \h. Arcystasia godeffroyi, p. 133. 



2, 2a, 26. Cosmopsaltria stuarti, p. 125. 



3, 3«, 36. Tibicen hurJcei, p. 126. 



4, 4«, 4J. ivillsi, p. 127. 



5, 5a, bb. Mclampsalta leichardti, p. 132. 



6, 6a, 66. Tibicen muellen, p. 128. 



7, 7a, lb. gregoryi, p. 129. 



8, 8«, 86. gilmorei, p. 127. 



9, 9a, 96. Melampsalia warburtoni, p. 129. 

 10, 10a, 106. forresti, p. 129. 



11, 11a, 116. Cystosoma schmeltzi, p. 132. 



12, 12a, 126. MelampsaUa eyreA, p. 130. 



13, 13«,.136. macJcinlayi, p. 130. 



14, 14a, 146. landsboroughi, p. 131. 



February 7, 1882. 



Prof. W. H. Flower, LL.D., F.R.S., President, in the Chair. 



Mr. Henry Seebohm exhibited a series of intermediate forms 

 between Carduelis caniceps and C. major (the eastern form of our 

 common Goldfinch, C. elegans), obtained at Krasnoyarsk in Central 

 Siberia. The series showed every intermediate form between one 

 species and the other, the white on the outer webs of the innermost 

 secondaries increasing in exact proportion as the black on the crown 

 and nape diminished. The supposition was that the two forms 

 interbreed in this district and produce fertile offspring. 



Mr. Sclater exhibited on behalf of Mr. Peter Inchbald, F.Z.S., 

 two curious Ducks which had been shot on some ornamental water 

 near Darlington in the county of Durham. One of these appeared 

 to be the result of a cross between the Pochard {Fuligula ferina) 

 and one of the freshwater Ducks, possibly the Teal or Mallard; the 

 other presented nearly the appearance of a female Scoter {CEdemia 

 nigra), but was rather darker below. 



The following papers were read :- 



