32 THE NAUTILUS. 
enberger was attached to the naval rendezvous in Philadelphia. 
From 1843, he was Superintendent of the United States Naval Hos- 
pital at Brooklyn, and, during his term of service there, organized 
the Naval Laboratory, for supplying the service with pure drugs. 
He was again Fleet Surgeon of the East India Squadron from 1847 
to 1850; Fleet Surgeon of the Pacific Squadron from 1854 to 1857, 
and of the Mediterranean Squadron from August, 1860, to July, 
1861, having served in the intervals between cruises at Philadelphia. 
In 1871, he was commissioned Medical Director on the retired 
list, with the relative rank of Commodore. 
Dr. Ruschenberger has been best known in Philadelphia, per- 
haps, for his scientific labors, and particularly for his efforts in be- 
half of the Academy of Natural Sciences, which bestowed on him 
the highest honors within its gift. 
He was elected Vice-President of the Academy in January, 1869, 
and President in December of the same year, serving in the latter 
office until 1881, when he was succeeded by Dr. Joseph Leidy. At 
the time of his death he was one of the curators, and Director of the 
Conchological Section. 
Dr. Ruschenberger won considerable reputation by the results of 
his scientific observations during his various cruises, which he pub- 
lished at different times. Some of his works were: “ Three Years 
in the Pacific,’ “A Voyage Round the World,” “Elements of 
Natural History,” “ Lexicon of Terms Used in Natural History,” 
“Notes and Commentaries During a Voyage to Brazil and China.” 
Besides these, he wrote “A Notice of the Origin, Progress and Pres- 
ent Condition (1852) of the Academy of Natural Sciences of Phila- 
delphia,” and various other pamphlets. 
Dr. Ruschenberger’s works on Natural History were among the 
first American treatises on this subject, and were largely instrumen- 
tal in creating an interest in zoology in this country. One of the 
most eminent entomologists in America, in speaking of Dr. Rusch- 
enberger, said that he had first learned the orders of insects from 
Ruschenberger’s Natural History. 
THREE NEW SPECIES OF MACOMA FROM THE GULF OF MEXICO. 
BY WILLIAM H. DALL. 
Macoma limula, n. s. 
Shell small, long and narrow, moderately inflated, anterior end 
rounded, longer ; the posterior end subrostrate, bent to the right ; 
