NATURAL SCIENCES OF PHILADELPHIA. 43 



This bird is, so far as I can see, exactly the same genus as the Asiatic T. 

 interpres alluded to above, and is about the same size. It is not a very good 

 Geocichla, of which T. citrinus is the type, but not a remote relative. One 

 specimen only in adult plumage is in the collection from the Camma. 



Genus Alethe, nobis. 



General form and aspect of Napothera, but with the bill thicker, the bristles 

 at the base of the upper mandible weaker and shorter, and in general charac- 

 ters more approaching Cossypha and Geocichla. Wing rather long, first quill 

 short, fourth and fifth longest, tail moderate, legs rather strong. 



75. Alethe castanea, (Cassin.) 



Napothera castanea, Cassin, Proc. Acad. Philada. 1856, p. 158. 



The adult is described by me as above from the river Moonda, and in the 

 present collection are intermediate and young specimens, the latter entirely 

 different from the adult, so much so indeed that were it not for more advanced 

 or intermediate specimens it would scarcely be suspected of being the same 

 species. They bear some resemblance to the young of Petrocincla. 



Young 5 Upper parts dark fuscous tinged with rufous on the rump and 

 every feather having an oblong or ovate central spot of light yellowish rufous, 

 wider on the back and wing coverts, narrower on the head. Under parts dull 

 yellowish rufous, many feathers on the breast edged with black, wings and 

 tail as in the adult. 



Several specimens from the Camma and formerly from the Moonda. 



76. Oriolus Baruffii, Bonaparte. 



Oriolus Baruffii, Bonap. Consp. Av. i. p. 347, (1850.) 

 " Oriolus intermedins, Temm." Hartl. 

 Several specimens in the collection from the Camma and formerly received 

 from the Moonda. 



77. Oriolus nigripennis, Verreaux. 



Oriolus nigripennis, Verr. Cab. Jour. 1855, p. 105. 

 Specimens from the Camma and formerly from the Moonda. 



Genus Trichophorus, Temminck, PL Col. iii. (liv. 14, about 1821.) 



Type T. barbatus, Temm. PI. col. 88. Bill strong, curved, rather wide at 

 base, nostril in a large cavity, aperture semicircular or crescent-shaped, rictal 

 bristles strong. Wing moderate, rounded, first quill short, fifth and sixth 

 quills longest, tail moderate, wide, legs short and rather slender, scales on 

 tarsi confluent or obscure. 



Belonging strictly to this group I have seen T. gularis (Horsfield) of Java, 

 T. sulphuratus (Midler) of Borneo, T. barbatus, Temm., T. olivaceus, Swains. 

 T. flaviventris, Smith, T. calurus, Cassin, and T. simplex, Hartlaub, of Africa, 

 and several other Asiatic species. All these have the bill strong and curved, 

 and several of them have the feathers of the head broad, somewhat length- 

 ened and probably erectile. Hairs on the back of the neck frequently long 

 and conspicuous. 



78. Trichophorus culoronotus, nobis. 



Strictly of the same group as T. gularis, Horsfield, and T. calurus, Cassin, 

 and resembling both, but larger. Feathers of the head broad and lengthened, 

 bristles on the back of the neck long and conspicuous, bill strong, curved, 

 legs and feet rather small, feathers of the lower back and rump lengthened. 

 Tail and upper coverts bright rufous, the outer feathers edged with greenish 

 yellow. Head above dark cinereous or plumbeous, cheeks plumbeous, every 

 feather with a medial line of white, back, rump and wings fine olive green, 

 tinged with yellow on the rump, quills brownish black, edged externally with 

 the olive green of the back, under wing coverts yellowish olive. Throat white, 

 breast cinereous (or plumbeous, nearly the same as the head above); abdomen 

 and under tail coverts greenish yellow. Bill bluish horn color, the edges of 

 1859.] 



