24 Shufeldt, Osteology of Orthorhamphus magnirostris. [,st^"july 



Fig. 5. — Direct inferior view of the craiiium of Orthorhamphus magni- 

 rostris. Same skull as fig. i, mandible removed. 



Fig. 6. — The mandible belonging to the skull shown in figs, i, 5, and 

 7 of Plates I. and II. Seen from above. 



Fig. 7. — Direct superior view of the cranium of Orthorhamphus magni- 

 rostris. Same skull as in figs, i and 5 ; mandible removed. 

 A shot-hole is seen at the anterior extremity of the maxillary 

 process of the right nasal bone, and this mutilation likewise 

 shows in fig. 5. 



Plate IV. (about f nat. size). 

 Fig 8. — Right lateral view of the trunk skeleton of Orthorhamphus 

 magnirostris. Same skeleton as before. The height of the 

 coracoid in the specimen equals 46 millimeters (fig. 8). The 

 superior apex of the pygostyle has been broken off. 



Plate V. (about | nat. size). 



Fig. 9. — Direct dorsal view of the same trunk skeleton as shown in 

 fig. 8, Plate IV. Orthorhamphus magnirostris. Length of 

 sacrum in life equals 7^ mm. 



Fig. 10. — Direct ventral view of the same trunk skeleton as shown 

 in figs. 8 and q. Orthorhamphus magnirostris. Length of 

 carina of sternum in life equals 78 mm. Note the irregu- 

 larity of the xiphoidal foramina. 



Plate VI. (| nat. size). 



Fig. II. — Direct lateral view of the right pelvic limb of Orthorhamphus 

 magnirostris. Same skeleton as before. The small patella is 

 still attached to the dried ligament below. In this skeleton 

 there is no first metatarsal nor hallwc present. 



Fig. 12. — Direct palmar aspect of the pectoral limb of Orthorhamphus 

 magnirostris. Same skeleton as before (fig. 11, &c.) The 

 phalange of poller bears a small claw. 



Fig. 13. — Direct anconal aspect of left humerus from the skeleton of 

 a specimen of Orthorhamphus magnirostris. Although this 

 bone is marked No. 19,649, it does not belong to the same 

 skeleton which furnished the figures for Plates I. -IV. 

 (figs. 1-12). The left humerus that belongs with that 

 skeleton was made imperfect by a shot-fracture, and its 

 distal half lost. The present bone was put in to replace it 

 (and marked 19,649 !) The humerus in fig. 12 of this Plate 

 has a length of 100 mm., while the one here figured has a 

 length of 104 mm. 



Plate VII. (f nat. size). 

 Fig. 14. — Superior view of the skull of Chionarchus minor, mandible 



removed. (No. 18,199, Coll. U.S. Nat. Mus.) 

 Fig. 15. — Superior view of the skull of Belonoptertts cliilensis, with 



mandible articulated. (No. 18,546, Coll U.S. Nat. Mus.) 

 Fig. 16. — Superior view of the skull of Squatarola squatarola, with 



mandible articulated. (No. 19,015, Coll. U.S. Nat. Mus.) 

 Fig. 17. — Superior view of the skull of Hcematopus niger ; mandible 



removed. (No. 13,636, Coll. U.S. Nat. Mus.) 



