1875.] 365 [Hyatt. 



scoLOPAcnm 



69. Gallinago Wilsoni Bonap. Not common ; two speci- 

 mens were shot in November. 



ANATID.E. 



70. Branta canadensis Gray. Canada Goose. Seen only 

 during migration, when it is sometimes shot while flying over. Saw 

 several flocks in November. 



71. Anas boschas Linn. Mallard. Said to be occasionally 

 shot on the mining reservoirs. I did not see any. 



PELECANUm 



72. Pelecamis trachyrhynchus Lath. White Pelican. 

 One flock seen in October. Did not hear of their ever alighting here. 



The Jueassic and Cretaceous Ammonites collected in 

 South America by Prof. James Orton, with an Appen- 

 dix upon the Cretaceous Ammonites of Prof. Hartt's 

 Collection. By Alpheus Hyatt. 



The species sent me for examination by Prof. James Orton indi- 

 cate that further research will be fruitful in the discovery of Juras- 

 sic and Cretaceous fossils. The apparent identity of many of the 

 forms with those of well known European species is surprising, since 

 one naturally expects the appearance of a greater number of new 

 modifications in such a distant fauna. This, however, is not the 

 case and with the exception of petrological peculiarities due to the 

 character of the matrix, etc., this small collection has precisely the 

 aspect of a lot of Western European fossils. The situation and 

 distance of the different localities indicates that an extensive series 

 of Jurassic rocks exist in Northern Bolivia and in Peru of which we 

 as yet know, comparatively speaking, nothing. 



The presence of the Lias or Lower Jura and the Upper Oolites, or 

 Kelloway and Oxford subdivisions of the Jura, are sufficiently well in- 

 dicated. The equivalents of the higher divisions, those which underlie 

 the Cretaceous, have so far not been discovered, nor do the collections 

 indicate the presence of the Lower Oolitic formations, though these 

 may now be hopefully hunted for. The minor formations cannot of 



