THE NAUTILUS. 47 



" The Distribution of the Unionidse in Michigan," (5) there can be 

 no doubt but that almost immediately there was an invasion of this 

 lake from the Ohio of the dominant species of that region, and it is 

 unnecessary at the present time to discuss that subject further. In 

 the same way, and at about the same time, the St. Croix outlet of 

 Lake Duluth into the Mississippi would have given an opportunity 

 for an invasion of that region by the Mississippian fauna. And it 

 would seem probable that the occurrence of Lampsllis luteola and 

 superioriensis in the western portion of Lake Superior at the present 

 time is to be accounted for in that way. 



(To be concluded.} 



PUBLICATIONS RECEIVED. 



THE GIANT SPECIES OF THE MOLLUSCAN GENUS LIMA OB- 

 TAINED IN PHILIPPINE AND ADJACENT WATERS. By Paul Bartsch 

 (Proc. U. S. Nat. Mus., Vol. 45, pp. 235-240, pis. 12-20, 1913). 

 The giant Limas here described were obtained during the Philippine 

 cruise of the fisheries steamer " Albatross," 1907-1910. They occur 

 only in deep water 161 to 559 fathoms. " They are by no means 

 abundant or universally distributed, for of the 369 dredgings made 

 in more than 100 fathoms only 18 yielded these mollusks." Limn 

 (Callolima} smithi measures as follows : Alt. 175 mm., lat. 118 mm., 

 diam. 48 mm. The type was dredged off Baliscasag Island in 432 

 fathoms. L. (Callolima) philippinensis measures, alt. 177, lat. Ill, 

 diam. 37; dredged off the outer Tayabas Light in 190 fathoms. Z/. 

 (Callolima} rathbuni was obtained from eight stations at depths 

 ranging from 161 to 226 fathoms, the largest specimen measuring, 

 alt. 208 mm., lat. 156 mm., diam. 59 mm. L. (Acesta) celebensis 

 has an alt. of 159 mm., and was dredged south of North Island, 

 Buton Strait, in 519 fathoms. The paper is a valuable contribu 

 tion to our knowledge of the deep-sea mollusca. C. W. J. 



THE PHILIPPINE MOLLLSKS OF THE GENUS DIMTA. By Paul 

 Bartsch (Proc. U. S. Nat. Mus., Vol. 45. pp. 305-307, pis. 27 and 

 28, 1913). Dimya lima was found attached to the shells of Lima 

 (Callolima} smithi and L. (Callolima) dalli, in 161 to 281 fathoms. 



MOLLUSQUES DE LA FRANCE ET DES REGIONS VoiSINES. Par 



A. Vayesidre, professeur & la Facult6 des sciences de Marseille, et 



