4 Annals of the Carnegie Museum. 



publications. This work, which has been in process of preparation 

 for several years past, embodies the results of extensive study and 

 comparison, in which the author was assisted by Mr. O. A. Peterson. 

 It is believed that it brings within the compass of a single paper all the 

 most important observations upon this group of mammals, which have 

 been made since 1825. 



Concentrated effort has been made during the fall and winter to 

 extract from the matrix some of the more important specimens found 

 in the great quarry in Uinta County, Utah, where Mr. Earl Douglass 

 and his assistants have been working for several years past. A great 

 deal of the material is absolutely new to science, and the result of 

 these discoveries is certain to add enormously to our knowledge of 

 the reptilian fauna of Mesozoic times. The skeleton of Bronto- 

 saiirus which has been recovered, probably the largest specimen 

 representing that genus which has ever been taken up, is in many 

 respects more complete than any other specimen which has been dis- 

 covered. When assembled and mounted it will show that the figures 

 heretofore published based upon more or less fragmentary material, 

 have been in many respects wide of the truth so far as the propor- 

 tions of the animal are concerned. 



Among other material taken up in the Utah quarry is a remarkably 

 well-preserved skull of a sauropod dinosaur, referable to the genus 

 Diplodocits, in which even the sclerotic coat of the eye-ball has been 

 preserved in a fossil condition, and a paper upon this remarkable 

 skull will shortly be published by the Editor. 



Important collections of birds, collected by Mr. M. A. Carriker, Jr., 

 in Venezuela and Colombia, have been received during the past 

 month. Many species not hitherto represented in the Museum have 

 come into our possession from this source. From tropical west 

 Africa we have received a number of species of the birds of this region 

 carefully collected by Mr. J. A. Reis. By exchange with the National 

 Museum in Madrid we have secured a small collection of the birds of 

 Morocco. The ornithological collections of the Museum are growing 

 steadily, and in a few years may be expected to become one of the 

 most important assemblages of its kind on the continent. 



