r.ARID.K. 179 



31424 a. The left ulna. Both in this and the preceding specimen the 

 prominence of the points of attachment of the secondaries 

 is well shown. 



31425. A slightly larger left ulna, with the proximal extremity 

 imperfect. 



31421. A nearly similar right ulna, imperfect proximally. 



31430. The distal half of the right ulna. 

 31427. The distal portion of the left ulna. 



31431. The distal part of the right ulna. 



31547-50. Four specimens of the metacarpus. These specimens 

 accord with the one figured by Milne-Edwards, op. cit. 

 pi. Ivii. figs. 6, 7. 



31603-5. Three specimens of the femur, the two entire ones belonging 

 to the right side, while the one of which the distal half is 

 wanting belongs to the left. They are very similar to the 

 example figured by Milne-Edwards, op. cit. pi. Ivi. fig. 19, 

 and their characters are those of existing Luridce. 



31634-8. Five imperfect specimens of the tibio-tarsus, some of 

 which are probably referable to this species. The least 

 imperfect specimen is somewhat larger than the example 

 figured by Milne-Edwards, op. cit. pi. Ivi. fig. 15, so that 

 it may belong to L. totanokles. 



Larus; sp. 



Apparently closely allied to L. elegans, but perhaps, on account of 

 its higher geological horizon, specifically distinct. 

 Hab. Europe (Bavaria). 



48188 h. The left humerus, wanting the distal extremity ; from the 

 Middle Miocene of Lierheim, near Hahnenberg. The 

 contour of this bone accords in all respects with that of 

 the humerus of L. elegans, but the subtrochanteric fossa 

 is filled with matrix. Purchased, 1877. 



48186*. The imperfect hinder portion of the cranium ; from Lier- 

 heim. Closely resembles the skull of L. elegans figured by 

 Milne-Edwards in his ' Oiseaux Fossiles de la France,' 

 pi. Ivii. fig. 1. Purchased, 1877. 



n2 



