Ptevijlugraphy of the Tiuamiforiues. 5 



Ventral surface : — 



T. niajores. — Those of the raanus longer and stouter than 

 those of the cubitus. 



T. media. — Present only on the cubitus. They lie almost 

 parallel with the arm_, and are concealed by the T. minores. 

 They are nearly as long as the major coverts, and still retain 

 the pennaceous character. 



T. m inoi'es. — There are four imperfect rows on the cubitus, 

 two on the maims. The first row is situated at the base of the 

 median coverts of the cubitus and the major coverts of the 

 manus. The second row is situated close behind the first, 

 and ceases proximal ly in the region of the thirteenth cubital 

 reraex. The third commences at a point corresponding to 

 the level of the third cubital remex. Distally the row is 

 continued on to the manus. The fourth row is divided from 

 the preceding by a broad bare space ; the feathers are wide 

 apart, and scarcely succeed in concealing the skin. This 

 row terminates at a point corresponding to the insertion of 

 the ninth cubital remex. 



T. marginales. — On the cubitus the first row of these 

 coverts forms one side of a triangle, enclosing a bare space ; 

 the opposite side of the triangle is formed by the fourth row 

 of minor coverts, and the base (imperfectly) by the axillary 

 feathers (Hypopteron) ; the feathers along the preaxial 

 side of the triangle are very long and conceal the otherwise 

 naked surface of the patagium. 



There are five rows of marginal coverts on the cubitus, 

 but only two on the manus, these running along the preaxial 

 border. 



Hypopteron (PI. I., Hp.). — A single row of five feathers, 

 connected with the outer branch of the pt. ventralis by a 

 double row of irregularly arranged feathers (see p. 3). 



Carpal covert and remex (5) both present ; the 

 former much the smaller; both are closely approximated 

 one to the other and to the first metacarpal remex. 



The wing is quinto-cubital (2, 6, 8) . 



Apteria of trunk : — 



Apt. spinalis (PI. I., Apt.sp.). — This arises at the upper 



