6 THE NAUTILUS. 
LIST OF MOLLUSKS COLLECTED IN MALDONADO BAY, URUGUAY, BY 
DR. WM. H. RUSH, U.S. N. 
BY HENRY A. PILSBRY. 
In the Nauritus for September, 1896, a list may be found of the 
non-marine mollusea collected in Uruguay and Argentine Republic 
by Dr. Rush. Descriptions of the new species mentioned in that 
paper have been published in subsequent numbers, and in the Pro- 
ceedings of the Academy of Natural Sciences of Philadelphia for 
1896, pp. 860-365, and plates 26, 27, and Manual of Conchology, 
2d ser., Vol. XI. 
The marine shells obtained by him while with the South Atlantic 
Squadron were nearly all taken in Maldonado Bay, dredged in from 
three to six fathoms of water, the limpets, etc., from the shore ex- 
cepted. The few forms collected elsewhere than at Maldonado and 
vicinity have the localities indicated below. In this connection it 
may be mentioned that the squids which jumped aboard the Yantic, 
as described by Dr. Rush in Nauriius, VI, p. 82, turn out to be 
Ommastrephes Bartramiit. Among the forms enumerated below and 
in the several published lists of shells from this general region, it is 
somewhat remarkable that some groups usually rather numerous, 
such as Rissoide, are not represented. The occurrence of a number 
of northern species is also noteworthy. There are also in the series 
collected about a dozen forms found only in poor condition and not 
yet identified. The descriptions of new species will shortly appear, 
with figures, in Proc. Acad. Nat. Sci. Phila. 
GASTROPODA. 
Aemea onychina Gould. Gorritti Island, Maldonado Bay. This 
bay was the type locality of Patella miilleri Dkr., a synonym of 
Gould’s species. 
Bittium sp. 
Bullia cochlidium Kien. 
Bullia globulosa Kien. Maldonado Bay. Very heavily cal- 
loused fossil specimens occurred in the wall of fort at the Mus. La 
Plata, Argentine Republic. | 
~ Bullia Uruguayensis n. sp. Shell somewhat like B. globulosa 
Kn., but more slender, the spire much longer. Surface smooth ex- 
cept for two to four spiral impressed lines separated by convex low 
cords, just below the impressed suture, and fine spiral strize on the 
