O. MISCELLANEOUS. 581 



etc. The most important purchase of the year was that 

 of the collection of fossil crinoids gathered by Mr. Charles 

 Wachmuth. 



The death of Professor Agassiz is adverted to in appropri- 

 ate terms ; and Mr. Alexander Agassiz, his son and successor, 

 announces his intention, in behalf of the trustees, of carrying- 

 out the views of the founder as fully as practicable. 



BULLETIN OF THE MUSEUM OF COMPARATIVE ZOOLOGY. 



The tenth number of Vol. III. of the Bulletin of the Mu- 

 seum of Comparative Zoology consists of an article on the 

 Ophiuridce and Astrophytidce, old and new, by Theodore Ly- 

 man, in continuation and rectification of previous memoirs on 

 the same subject. Many new species are indicated, princi- 

 pally from the Philippine Islands, where they were collected 

 by Dr. Semper, from whom they passed into the possession 

 of the Museum of Comparative Zoology. The memoir is il- 

 lustrated by seven plates, showing the anatomy of the Ophi- 

 uridce, the growth of spines, hooks, and stumps, the formation 

 of armed spines, etc., and the characters of the new species. 



CATALOGUES OF THE MUSEUM OF COMPARATIVE ZOOLOGY. 



The series of illustrated catalogues of the Museum of Com- 

 parative Zoology at Cambridge has recently been enriched 

 by two important additions. The first (or No. 1) consists of 

 Part IV. of a revision of the echini, by Mr. Alexander Agas- 

 siz, completing a volume of 762 pages and 94 plates. It is 

 by far the most elaborate work of the kind that has appeared 

 under the auspices of the Museum, and at the same time the 

 most important, in view of the thorough revision that is given 

 fo the recent species, the result of a personal inspection of 

 almost every type. 



The present part is occupied principally by a study of the 

 structure and embryology of the echini, to which belong sev- 

 enteen plates issued with Part III. 



No. 8 is composed of the first edition of the zoological re- 

 sults of the Hassler expedition, and embraces the study of 

 the echini, crinoids, and corals by Messrs. Alexander Agassiz 

 and L. F. Pourtales. This is accompanied by ten plates in 

 the text. Some of these species have already appeared in 

 the Bulletin of the Museum of Comparative Zoology, the 



