Alpheus Hyatt, S.B., Assistant in Invertebrate Palaeontology in the Museum of Comparative Zoology, died suddenly last night, probably of apoplexy. He was standing in Harvard square about half-past seven, evidently waiting for a car, when without any warning, he sank to the pavement, and died a few minutes later. Dr. Hildreth was summoned, but arrived too late to render any assistance. The body was removed to the home of the deceased at 19 Francis avenue. Mr. Hyatt has not been known to have been in ill health recently. His age was sixty-three.

Mr. Hyatt came to Harvard in 1858 as a student in the Zoological Department under Professor Agassiz, and graduated from the Scientific School with the class of '62. At the outbreak of the Civil War he had joined the Cambridge company, and after graduating from College he left for the front as a lieutenant. He served through the war and was promoted to the rank of captain. After being stationed for some time at New Orleans, he returned to Cambridge and renewed his connection with the Scientific Department as assistant to Professor Agassiz, a position which he has held up to the present time.

His writings were many and he was recognized as one of the leading zoologists in the country. For many years he has been a director of the Boston Society of Natural History. He was a Fellow of the National Academy of Science, the American Academy of Arts and Sciences of Boston, and of many other leading scientific academies at home and abroad. Among the clubs of which he was a member were the Thursday evening, the Round Table and the Examiner Clubs of Boston, and the Saturday Club of Cambridge.