370 CARNEGIE INSTITUTION OF AVASHINGTON. 



Dr. C. Wythe Cooke, of the U. S. Geological Survey, reports, regard- 

 ing the molliisks and braehiopods, that he has described about 106 

 species, of which about 45 are new. There are 35 species from Cuba, 

 13 from St. Bartholomew, 35 from Anguilla, and 27 from Antigua. 

 The manuscript is practically finished, but some revision and editing 

 is necessary. The mollusca from Anguilla indicate stratigrapliic affini- 

 ties with the Tampa horizon of the Oligocene. 



Dr. R. S. Bassler, of the U. S. National Mueseum, and Mr. Ferdi- 

 nand Canu, of Versailles, France, w^ho are studying the fossil Bryozoa, 

 report that the description and illustration of the specimens is com- 

 plete and that a fauna of about 15 species has been noted from the 

 several localities. In the matter of correlation, the faunas from 

 Antigua, Anguilla, and Panama seem to indicate the same general age 

 equivalence— that is, upper Oligocene. The Anguilla and Panama 

 faunas apparentl}' represent the same horizon, as there are a few species 

 in common, while the species from Antigua, although there is none 

 common to this fauna and the other two areas, are still so closely related 

 to upper Oligocene Brj^ozoa that there can be little doubt that they 

 are of this age. 



Miss Mary J. Rathbun has completed a manuscript on the decapod 

 Crustacea obtained in the Leeward Islands. All the species are new, 

 and include a crab from St. Bartholomew and two shrimps and an 

 anomuran crab from Anguilla. This collection will be supplemented 

 by that obtained many years ago in Santo Domingo by W. M. Gabb 

 and loaned by the Philadelphia Academy of Natural Sciences; it will 

 add 6 species hitherto unknown. 



Besides the paleontologic investigations enumerated. Dr. Paul 

 Bartsch is studying the Recent land mollusca collected in the Leeward 

 Islands, and such other material as is available, for the hght they may 

 throw on former land connections between islands and the time of their 

 severance because of submergence. He hopes to complete his report 

 before the end of the coming winter. 



Stratigraphic deductions from the paleontologic investigations, so 

 far as they have progressed, are indicated in the preceding notes. As 

 they are corroborative of those already published in the two citations 

 given, they will not be elaborated. My deductions were based princi- 

 pally on the fossil coral faunas, with some supplementary evidence from 

 the foraminifera, echinoids, and mollusks. 



Dr. D. F. MacDonald, of the U. S. Geological Survey, is studying 

 the lithologic material, mostly volcanic and intrusive rocks. Thin 

 sections of 55 specimens were cut in the laboratory of the U. S. Geo- 

 logical Survey. 



It was stated in the Year Book for 1914, p. 358, that one object 



'of the expedition was "to study the physiography of the islands in 



order to get a basis for making deductions as to how the conditions were 



