S56 Mr. Swainson on several new groups in Ornithologt/. 



Bill moderate, slender, compressed, slightly curved, entire. 

 Wings short, rounded ; first quill short, the third, fourth, and 

 fifth nearly equal and longest. Tail graduated, soft. Legs 

 slender; tarsi elevated, anterior scales few, lateral scales ob- 

 solete, posterior scales numerous, small; hind toe shorter 

 than the middle, the claw curved. 



Sub-family Sclerurina, 

 SCLERURUS. 



Rostrum sub-elongatum vel longiusculumy emarginatum, obtu^ 



sum ; culmine versus apicem leviter arcuato. 

 Ala mediocreSy rotundata^ remigibus l^d et ^dd gradatiSy 3^^, 4<« 



et 5<« cequalibus^ longissimis. 

 Cauda lata^ rigida^ rotundata. 

 Pedes gracilesy breves , digito exteriore prim a phalange tenus medio 



conjunctoy interiore ad basin connexo ; halluce gracilis sub' 



curvatoy leviter emarginato. 



Bill rather lengthened, notched, obtuse : culmen elevated, and 

 slightly curved towards the tip. TVings moderate, rounded ; 

 the first and second quill graduated ; the third, fourth, and 

 fifth equal and longest. Tail broad, rigid, graduated. Legs 

 short, slender ; outer toe connected to the middle toe as far as 

 the first joint, inner toe united at the base; claw of hind toe 

 slender, slightly curved and notched. 



On these two novel and interesting forms, I shall have occa- 

 sion to oflfer a few observations while describing the valuable 

 acquisitions made by Dr. Langsdorflf in the interior of Brazil. 



Sub-family 



OXYGLOSSUS. 



Rostrum mediocre^ gracile, attenuatum^ rectum^ emarginatum. 

 Lingua Jaculatoria ^^ apice simplici, acuto. 



Alee mediocresy attenuate : remigibus l^nd et ^td cequalibus^ ^dd 

 €t 3'«« eequalibusy longissimis. 



