185 



oyster of the type of 0. cristata, Echini, and sponges. Cotteau 

 (1882 and 1897) has described six species of Cretaceous Echini 

 from Cuba, four of which were found in the vicinity of Cienfuegos, 

 one of them at Concepcion de Montalvo. Other writers have 

 referred to the presence of Cretaceous rocks in the vicinity of 

 Cienfuegos, but so far as I can learn, no detailed report on the 

 geology or list of the fossils from the region exists. 



The present locality is about 18 miles southeast of that de- 

 scribed by Doctor Matthew. 



The specimens of Arctostrea atkinsi were presented to the 

 Museum of Comparative Zoology by Mr. Edwin F. Atkins, 

 founder of the Harvard Biological Station and Botanical Gardens 

 at Soledad, through Dr. Thomas Barbour. We are indebted to 

 him for them, and to Dr. T. W. Stanton and Dr. L. W. Stephen- 

 son, who have examined the specimens and furnished references 

 to recent papers on the Ostreidae. 



LITERATURE. 

 Coquand, Henri. 



1869. Monographie du genre Ostrea. Terrain Cr6tace\ Marseille, p. 1- 

 215, pi. 1-75. 

 Cotteau, G. 



1882. Description des Echinides fossiles de l'ile de Cuba. Ann. Soc. Geol. 



de Belgique, vol. 9, 1881-1882, p. 3-49, pi. 1-4. 

 1897. Descripci6n de los Equinoides f6siles de la Isla de Cuba. Comisidn 

 del Mapa Geol6gico de Espafia, Boletin, vol. 22, p. 1-99, pi. 1-29. 

 Douville, Henri. 



1911. Observations sur les Ostreides, origine et classification. Bull. Soc. 

 Geol. de France, ser. 4, vol. 10, 1910, p. 634-645, pi. 10-11. 

 Matthew, G. F. 



1875. Impressions of Cuba. Can. Nat. and Quar. Journ. Sci., n. s., vol. 

 7., p. 19-34, 75-85. 

 Pervinquiere, L. 



1911. Observations. Bull. Soc. Geol. de France, ser. 4, vol. 10, 1910, p. 

 645-646. 

 Roemer, F. A. 



1839. Die Versteinerungen des norddeutschen Oolithen-Gebirges. Ein 

 Nachtrag. 4to, Hannover, p. 1-59, pi. 17-20. 

 Woods, Henry. 



1913. A Monograph of the Cretaceous Lamellibranchia of England. Vol. 2, 

 pt. 9. Palaeontographical Society, London, vol. for 1912, p. 341-473, pi. 

 55-62. 



