48.S i*K()ci:i:i>iN(ji.s of the academy of [1890. 



science will have good results both generally and for this institution. 

 A similar series, limiting the field to modern Europe, is in prepa- 

 ration for the present winter. 



The collections in the departments of Archseology and Ethnology 

 are substantially in the same condition as at the date of my last 

 annual report. Want of exhibition space has prevented any material 

 increase in the number of sjiecimens, and even the present collections 

 are barely accessible to students. The construction of a new l)uild- 

 ing for the use of the Academy gives hope that before long a more 

 satisfactory display of these collections will be possible. 

 Respectfully submitted, 



D. G. Brinton. 



REPORT OF THE PROFESSOR OF INVERTEBRATE 



ZOOLOGY. 



The Professor of Invertebrate Zoology respectfully reports that 

 ninety trays of marine, fresh-water and land shells, collected by 

 him during the winter of 1888-89, on the Caribbean Islands, 

 have been presented. 



During the past year he delivered seven lectures on the " Carib- 

 bean Islands," five of which were illustrated with lantern slides. 



It is proposed to give a course of lectures on the "Principles of 

 Zoological Philosophy" during the spring of the coming year. 



The additions to the museum have been important. A sn^all 

 ]jart of the collection made by the expedition of the Academy 

 of Natural Sciences, under the charge of Professor Angelo Heil- 

 prin, including Echinodermata and corals, have been presented. 

 The bulk of the collection is now being worked up, and will be 

 formally presented in the coming year. 



A collection of Echinoidea, Asteroidea, Ophiuroidea, Holothuroi- 

 dea, Crinoidea, Anthozoa, Hydroidea, Crustacea and Annelida, 

 principally from the dredgings of the U. S. Fish Commission 

 steamers, have been presented by the Smithsonian Institution. 

 Respectfully submitted, 



Benjamin Sharp, 



Prof, of Invert. Zool. 



