BOMBINATOli. 



145 



mu8cle into an anterior and a posterior portion ; when 

 these sacs are fully inflated the throat is globular and 

 larger than the rest of the head. During the breeding 

 season black horny excrescences form a band along 

 the inner side of the forearm, and cover the inner 

 carpal tubercle as well as the inner side of the first 

 and second fingers. 



Measurements (in millimetres). 



1,4. Kulleii, Sweden: Lilljeborg. 



2, 5. Berlin : Boulengei'. 



3, 6. Holies, Hungary : Mehely. 



Skeleton. — Skull very flat and feebly ossified, the 

 enormous fontanelle being but narrowly bordered at 

 the sides, or at the sides and behind, by the much- 

 reduced fronto-parietal bones ; ethmoid short and 

 nearly entirely exposed, its upper lamina with convex 

 anterior border, and in contact with or narrowly 

 separa,ted from the nasals; the latter bones have a 

 concave anterior and a convex posterior border, and 

 are in contact with each other in the median line. 

 Squamosal feeble, with short zygomatic, and no pos- 

 terior branch. Vomers thin ossifications narrowly 

 separated in the middle line ; no palatine bones ; the 

 anterior branch of the trifurcate pterygoid much 

 elongate, extending to the anterior border of the oi^bit, 

 where it curves inwards to make up for the missing 

 palatine, the inner branch short and widely separated 

 from the parasphenoid ; latter shaped like a dagger 

 with very short handle, obtuse or truncated anteriorly, 



