Zoological Society. 61 



white-bordered ; the wings 129, and the abnormous second hand- 

 feather 41 mm. long. 



This species is probably a subspecies of cayanus. 



10. Ps. SEMiFASciATUS. Pach. semifasciatus, Spix, t. 442. 



The black on the head covers only the front to the eye, and de- 

 scends to the anterior ear-feathers round the eye to the chin ; tail 

 black, with a silver-grey or white band under the tail-covers, and a 

 white band on the tip; the wings 127-134, and the abnormous 

 second hand-feather 46 mm. long; it is on the exterior web black, 

 and on the interior white. 



The female with dirty brown head and a greyish brown back, with 

 a tinge of red. 



11. Ps. MAXIMUS, Kp. 



In the collection of Lord Derby I found a young bird of very large 

 dimensions, which does not belong to any of the preceding species. 

 The bin is reddish on the root ; the under parts are Ughter than on 

 the yoimg cayanus ; the stripes are more obsolete, and are reduced 

 on the side as black shaft-stripes ; shafts of the tail reddish brown ; 

 under tail and interior wing-covers white, without spots. 



Ps. cayanus. Ps. maximus. 



Dimen. — Head 52 56 



Gape 35 35 



Wing 129 129 



Tail 70 73 



Height of the bill .' 11 13 



Breadth *. 12 13| 



It would be very interesting to discover the old bird of this species. 



d. Subgenus Erator. 



It tmites the size, colouring and formation of the second hand- 

 feather of the true Psaris with the bill and feathered lorum and eye 

 region of the other subgenera. 



This little subgenus, with its mixed characters, gives the clearest 

 proof that Psaris, Pachyrhamphus and Bathmidurus cannot be con- 

 sidered as true genera. 



12. Ps. iNauisiTOR, Orb. Lanius inquisitor, Olf. 

 Diag. — Tail black. 



Descr. — The male with black head and white ear-covers, connected 

 vrith a white collar, which divides the black head from the silver-grey 

 body ; tail black, at the root white, which extends to the margins of 

 the inner webs ; end of the taU without white band ; the second hand- 

 feather on the inner web white. 



The female {Jardinii, erythrogenys, Selbyi, and Nattereri, Sw.) 

 with white front and rufous ear-covers. 



13. Ps. Fraserii, Kaup. 



Biag. — Tail two-thirds white, with black white-bordered end. 

 Descr. — The head to the ear-covers black ; ear-covers and under 



