THE NAUTILUS. 107 



low water murk to 100 fathoms, also found in the maws of fishes. 

 Common everywhere north of Cape Cod, rare and local to the south 

 of it. Two other species, also circumpolar in range, the Modiolaria 

 nigra and M. corrugata, are said to have hcen found as far south as 

 Buzzard's Bay, but as I have no idea they will ever he found in 

 R. I., I do not include them in these papers. 



( To be continued. ) 



GEORGE B. SIMPSON. 



George Bancroft Simpson was horn in 1841 at Boston, Mass., re- 

 moved to Waterbury, Conn, at an early age, and in 18G1 enlisted in 

 the army for the Civil War. At the close of his service he entered 

 Yale College, but was unable to complete his course for lack of 

 money. In 1SG8 he came to Albany and began work with his 

 uncle, the late Prof. James Hall, State Paleontologist, as a collector 

 of fossils. Subsequently he took up the drawing of fossils and be- 

 came highly skilled in this work. Thousands of the fine drawings 

 which have illustrated the Paleoiitoloc/y of New York being his 

 handiwork. 



He was a devoted lover of nature, and was the author of a useful 

 work on the anatomy of the fresh water clam (Anodonta fluviatilis), 

 and had -just completed an elaborate treatise on the anatomy, physi- 

 ology and embryology of Poly gyro, nlbolabris and Limax maximus,at 

 the time of his death, which occurred October 15, 1901 J. M. C. 



PUBLICATIONS RECEIVED. 



THE MOLLUSCA OF PORTO Rico. By William H. Dall and 

 Charles T. Simpson. (Extract from U. S. Fish Commission Bulle- 

 tin for 1900, Vol. I, pages 351-524.) 



This work really constitutes a hand-book of the mollusca of the 

 island, as it contains brief descriptions of the genera and species with 

 references to the original descriptions and principal synonymy, illus- 

 trated by 6 plates containing 102 figures. The total number of 

 species recorded is 653, of which 42 are new. Excluding the land 

 and fresh water shells and nudibranchs the number of species and 

 well-marked varieties is 530, and an estimate is made of 600 species. 

 " It has been one of the surprises that a number of species originally 

 described from deep water in the Blake report, turned up in less 

 than 100 fathoms in MayagiiPz harbor or other localities." 



