On some Birds from the N. fV, of America, 353 



the more interesting species in our Journal, previously to their appearing 

 more at large in the Appendix to his work. In this undertaking I shall 

 confine myself merely to the technical description of the birds. The 

 more valuable part of the account of them will be reserved for the more 

 detailed work ; in which I may here venture to promise much interest- 

 ing information, extracted from the journal of Mr. Collie, Surgeon, and 

 Mr. Tradescant Lay, Naturalist, to the expedition. The notes of these 

 gentlemen not only furnish us with the habits and locaUties of the birds 

 which have been brought home, but also with what is rarely attended to 

 by collectors abroad, an account of their internal structure. 



Pica Beecheii. 



Pica capite collo corporeque infrd intense nigris, dorso alis rectrici- 

 busque supra dilute cceruleis ; rostro pedibusque rubro-flavis. 



Remiges inferiores, pogonia superiora interiora, rectricesque infra fuscee. 

 Tectrices alarum inferiores cseruleae. Cauda subcuneata. Longitudo 

 corporis, 14^; rostri, IJ; alee a carpo ad remigem 5tam, 6| ; caudce 

 ad apicem rectricis mediae, 7|, ad apicem rectricis externae, 6 ; tarsi, 1 J. 



This beautiful and strongly marked species was obtained at Montereale. 

 I have named it after the enterprising Commander of the Expedition, 

 which has added so much to our information in every department of 

 science. 



Pica Colliei. 



Pica macula subrictali, corporeque supra cceruleis ; fronte, crista, 

 genis, colloque inferiore nigris ; corpore subtus, rectricamque externa^ 

 rum apicibus albis, caadd elongatissimd. 



Crista erecta, elongata, antrorsum spectans, fades pectusque intense 

 nigrae. Supercilia, colli latera, pectusque medium albo notata. Tectri- 

 ces inferiores albse. Rectrices quatuor mediae supra caeruleae, subtiis ni- 

 grae. Longitudo corporis ab apice rostri ad apicem caudae, 2 Ped., 4 

 Unc; rostri, 1 /^^ ; alee a carpo ad remigem 5tam, 8 ; caudcs ad apicem 

 rectricis mediae, 19 J ; externae, 6 ; tarsi, 2. 



This beautiful species, which was met with at San Bias, was not in 

 the publick collection sent to me by Captain Beechey. The specimen 

 from which the above description was taken, was presented to the 



