48 



of it is black, with white or yellow end spots. Size of a Fiiich. The 

 predominating colour of the males is black, white and grey. 



In this little subgenus we have different type-species, about which 

 the different subspecies arrange themselves. One of these is 



Ps. MARGINATUS. 



Head-feathers black, on the tip with steel-blue ; wings black ; 

 shoulder- covers, wing-covers and arm-wings white marginated ; tail 

 graduated, black with broad white tip. 



The female has all the margins and the under parts rufous yellow, 

 the back greenish, and the head darker coloured. 



a. Ps. MARGINATUS MINOR. 



Lorum and a small line on the front whitish ; ear-covers, back part 

 of the neck, lower part of the back light grey ; upper part of the 

 back black ; all the under parts white with grey tint ; the abnormous 

 second hand-feather white, on the exterior web on the root with a black 

 spot, and from this spot till the end ; along the shaft on the interior 

 web a small long black stripe. 



h. Ps. MARGINATUS MAJOR. Bathnidurus major, Cab. 



Lorum and a small line on the front whitish ; before the eye a 

 black spot of bristle-feathers ; the shoulder-covers all white ; over- 

 back black ; the abnormous second hand-feather longer, white, with 

 a small stripe along the shafts on both sides. 



C. Ps. MARGINATUS TRISTIS, Kp. 



Without a small white line on the front ; lorum and the whole 

 head black ; the feathers on this part are more massive on the tip, 

 and have more lustre ; the shoulder-covers only on the tip white ; 

 the whole neck and upper part of the back black ; lower part of the 

 back, ear-covers and all the under parts dark grey, mixed with black ; 

 the tail has not so much white on the tip ; the luider side of the wings 

 with smaller white margins ; the second abnormous hand wing-feather 

 on the inner web whitish with grey spots, on the outside black, with a 

 grey margin on two-thirds of the upper part ; the emargination on the 

 tip very chstinct. 



Mus. Derb. 



Comparison.— Ps.marg. Ps.marg. Psmarg. 



■^ minor. major. tnstis. 



Head 35 . . 38 36 . . 37 



From the gape to the tip of the bUl 18 .. 19 19 .. 20 



Wing 65 . . 84 73 . . 7.t 



Tail 50 . . 64 56 . . 62 



A new species in the collection of Lord Derby and in the British 

 Museum, forming a second type-species, I have called 



Ps. PARiNus, Kaup. 



Size of Parus major ; head-feathers black, with a soft violet lustre, 

 and not imitating the form of scales ; lorum, ear-covers and all the 



