42 



modern autliors, and to the expediency of subdividing the group 

 according to the modifications of form exhibited in the wings and 

 tail, proposed the following characters as separating the two ge- 

 nera. 



Lanius. 



Rostrum longitudine mediocre, robustum, compressum, ad basin 

 rectum, ad apicem curvatum, mandibulae superioris tomiis fortiter 

 emarginatis, dentem conspicuura exhibentibus ; naribus basalibus, 

 lateralibus, fere rotundatis^ membrana partim tectis j ridu setis 

 rigidis munito. 



Pedes mediocres ; digitis liberis ; acrotarsiis late scutellatis. 



Alee subacuminatae, subbreves ; remige prima brevissima, tertia 

 longissima, caeteris gradatira decrescentibus. 



CV/wc^a brevis, oequalis aut subrotundata. 



Typus genericus, Lanius CoUurio, Linn. 



COLLURIO. 



Rostrum pedesque ut in genere Lanio. 



Alee subrotundatae, breves; remige prima brevi, secunda sequen- 

 tibus paullo breviore, tertia quarta et quinta fere aequalibus lon- 

 gissimis. 



Cauda elongata, gradata. 



Typus genericus, Lanius Excubitor, Linn. 



To the latter group the following Himalayan species belong. 

 CoLLURio Hardwickii. Call. Capitis parte auteriore, strigu per 

 oculos ad collum extendenie, alis, cauddque nigris ; capitis vertice, 

 corpore infra, macula medid alarum, caudce tectricibus, rectricibus 

 duabus lateralibus, cceter arum que, quatuor mediis exceptis, basi 

 apiceque albis ; occipite, nucha, dorsoque imo albescenti-griseis ; 

 dorso medio lateribusque abdominis Jerrugineis. 

 Rostrum pedesque nigri. Caput superne albo nigroque colore in 

 duas fere partes transversim divisum. Longitudo corporis, 8 ; alee 

 a carpo ad remigem Stiam, 3-J^ ; rostri, ^; tarsi, |; caudcB, 34. 

 Bay-backed Shrike, Lath.? Gen. Hist. vol. \\. p. 13. sp. 6. 

 This bird appears to be the same as that referred to in Dr. La- 

 tham's work, the description of which is taken from one of the draw- 

 ings of General Hardwicke, to whom the species is inscribed. 

 CoLLURio ERYTHRONOTUS. Coll. strigci Jrontali per oculos ad 

 medium colli extendenie, alis, rectricibusque quatuor mediis ni- 

 gris ; capite supra, nucha, dorso superior i, rectricibusque latera- 

 libus pallide cinereis ; corpore iiifra, alarum macula medid, remi- 

 gum interiorum apicibus, rectricutn lateralium marginibiis omni- 

 umque apicibus, albis ; scapularibus, doi'so imo, abdominisque la- 

 ter ib usjerrugineis. 

 Rostrum pedesque nigri, illius mandibula inferiori ad basin flaves- 

 centi. Striga per oculos nigra, supra graciliter albo marginata. 

 Tectrices alarum inferiores albas. Longitudo corporis, 10^ ; ala a 

 carpo ad apicem remigis 3tise, 34^; rostri, ^ ; tarst, ll; caudce, 44-. 

 This bird was observed to bear a great resemblance to the de- 



