26 
The Assistant, by the advice of the Curator, has undertaken 
new duties as Secretary of the Boston Society of Natural History, 
which renders it necessary for him to spend a portion of his time 
in Boston, 
The months of July, August, and September, through the gen- 
erosity of Mr. A. Hemenway, were spent in Europe, studying 
the arrangement and methods of research in Zodlogical Stations 
and Museums abroad. 
The Assistant has pushed forward a report on his observations 
of the Invertebrata of California, collected during a trip to the 
Pacific Coast. The plates for this report, including a colored 
lithograph, are prepared for the printer, and the text is ready 
for the press. 
The following papers have been published during the past 
year: — 
1. On Certain Medusze from New England, Studies from the New- 
port Marine Laboratory, No. XIX. Bull. Mus. Comp. Zool., Vol. XIII, 
No. 6. : 
2. On the Development of the Caleareous Plates of Asterias. Studies 
from the Newport Marine Laboratory, No. XX. Bull. Mus. Comp. Zodl., 
Vol XILI., No. 9. 
3. A New Mode of Life among Meduse. Proc. Bost. Soc. Nat. Hist. 
Vol. XXIIL, pp. 389-395. 
4. A Hydroid Parasitic on a Fish. Nature, Vol. XXXVI., No. 
939. | 
5. Are there Deep-sea Meduse? Amer. Jour. Arts and Sci., Ser. 3, 
Vol. XXXV., No. 206, pp. 166-179. 
6. On a New Physophore, Pleeophysa, and its Relationships to other 
Siphonophores. Ann. Mag. Nat. Hist., May, 1888. 
7. Seaside Study on the Coast of California. American Naturalist 
February, 1888. 
8. The Sucker on the Fin of Pterotrachea. Zoologischer Anzeiger, 
Vol XT, Now2g4r 
9. On the Origin of the Present Form of the Bermudas. Proc. Bost. 
Soc. Nat. Hist., Vol. XXIII. 
10. Final Report on the Invertebrata of the Greely Expedition. Con- 
tains Reports on Medusz, Echinodermata, Worms, and Mollusca. 
11. Bibliography of Hydrozoa, Actinozoa, Coral Islands, and Echino- 
dermata, for “'The Standard Natural History.” 
12. On a New Parasite of Amphiura. Proc. Bost. Soc. Nat. Hist., 
Vol. XXIV. pp. 31-34. ; 
