Imperfectly Described, Species of Birds. 149 



second primaries uniform black, short, narrow, and attenuated 

 at the ends, in a somewhat similar manner to the first quill 

 in the genus Ptilinopus, as seen in Columba ( P.) jambos ; 

 head crested as in most Buceridce, that is the longest feathers 

 rising from the nape, and growing shorter towards the ver- 

 tex. The two middle tail feathers surpass slightly the rest, 

 and show an indication to be tipped with white; these fea- 

 thers are more pointed than the lateral ones, which become 

 almost truncate in form, and slightly graduated in length ; this 

 structure is to be observed also in the following species, as 

 well as in B. Albirostris, Malabaricus , Gingianus, Gingalen- 

 sis, Coronatus (Africa), &c. 



The form of the bill in this species is very peculiar, the 

 true line of the culmen may be seen along its whole length ; 

 , a narrow groove commences at the nostril which is placed in it, 

 and separates in a way the main portion of the upper mandi- 

 ble from its casque ; the culmenoid ridge of the casque for 

 half its length is much higher than the occipital plane of the 

 head ; the casque is much swollen all its length, though most 

 so in the middle, where, when seen from above, it is broader 

 than the bill ; its posterior portion is much narrower than 

 the front of the head, and its anterior portion is much pinched, 

 so as to render it almost sharp ; the sides of the upper mandi- 

 ble are concave, and the margins of the bill are dentated, and 

 in my specimen much worn, irregularly notched, and broken. 

 From Malacca. 



Dimensions. 



Total length 27 inches. 



Wing 10 „ 



Tarsus. 1 X V „ 



Hallux 1 „ 



Culmenoid ridge.. 3 T 2 ¥ „ 



Buceros Comalus, Raffles. 

 A specimen of what I consider to be this bird is now be- 



Bill irom gape 4^ inches. 



Gonys .3^ „ 



True culmen 2 T 3 7 „ 



Bill from nostril in a } 

 straight line " 



