Trogonid^e.] 



OSTEOLOGIIA AVIUM. 



[EURYLAIM^E. 



PSARISOMUS, Sw. 



Dalhousiae, Jam. 

 Sternum very similar to Alcedo, with two foramina on each side ; the edge of the keel 

 nearly straight ; coracoid and furculum long. Some fragments are in the British 

 Museum. 



Measurements. 



Length of humerus . 

 Length of ulna . . 

 Length of radius 

 Length of metacarpus 

 Length of femur 

 Length of tibia . . 

 Length of metatarsus 



Tenths. 



Length of sternum 



Tenths. 

 Breadth of posterior margin of sternum 7^ 

 Breadth of anterior margin of sternum 5 



Depth of keel 3 



Length of head 



Breadth of head 



Length of pelvis 12 



Breadth of pelvis 8 



Eurystomus, Vieill. 



Orientalis, Linn. 



Cranium very similar in shape to Trogon, but the space between the upper margins of 

 the orbits wider. Orbital septum entire. Maxillaries covering the roof of the mouth 

 for nearly one-half the length of the cranium, with the exception of a slight slit 

 between them. Palatine bones very broad, short at their junction with the maxillaries, 

 truncate on their hinder margin, with a narrow dependent flap on their internal margins. 

 Sphenoid as in Eurylaimus. A deep channel for the masseter muscles, as in Podargus ; 

 a deep depression at the base of the nasal bones, but not so deep as in Eurylaimus. 



Sternum and pelvis similar to those of Trogon, but the latter has the posterior spine 

 strongly marked. 



Measurements. 



Tenths. 



Length of humerus 20 



Length of radius 25 



Length of metacarpus 11 



Length of femur 10-g- 



Length of tibia 15 



Length of metatarsus 8 



Length of sternum 15 



Tenths. 

 Breadth of posterior margin of sternum 11-| 

 Breadth of anterior margin of sternum 8 



Depth of keel 4-| 



Length of head . 



Breadth of head 

 Length of pelvis 

 Breadth of pelvis 



24 

 23 

 26* 

 11 



Illustrations. 



Skeleton, Plate III. B. 



Sternum, Plate VIII. fig. 6. 



50 



