1 20 THE NAUTILUS. 



Shells ot'-N. A., pt. iii, p. 100, is a totally different tiling, and as the 

 name is preoccupied, it must be dropped for the ribbed species there 

 defined. If T. subcylindrica L. occurs at all in the West Indian 

 area or Florida, which I strongly doubt, its presence there is " ad- 

 ventitious." All of which may be readily verified by a reference to 

 the works of Linnaeus, Hanley, Thorpe, and a collection containing 

 a series of European TnmcateUidce H. A. Pilsbry. 



The collection of the late Dr. Win. D. Hartman has been pur- 

 chased by the Carnegie Museum, Pittsburgh. It is especially rich in 

 the genera Partula and Helicina, the Melanians, both American and 

 exotic, Unionidce, and Polynesian marine shells. It contains most 

 of the types of new species described by Dr. Hartman, others being 

 in the collection of the Academy of Natural Sciences. The Achati- 

 nellidce were purchased some years ago by the Hamburg Museum. 

 In acquiring this collection the trustees of the Carnegie Institute 

 have made an extremely important addition to their museum, as the 

 formation and study of this collection was the life-long work of Dr. 

 Hartman. The specimens are well identified, as we know by frequent 

 use of them, and afford a solid basis for conchologic work to students 

 in Pittsburgh and the adjacent cities of Pennsylvania and Ohio. 



Tamiosoma Conrad, a Sessile Cirripede Prof. W. H. Dall 



has recently examined specimens of this problematic fossil, formerly 

 supposed to be molluscan, and finds that the supposed tubes are the 



vesicular, elongated bases of a Balauus-\\ke cirripede Science, 



Jan. 3, 1902. 



Planorbis bicarinatus striatus n. var. — Shell similar to that 

 of typical bicarinatus, but with a deeper, narrower umbilicus, and 

 with the spiral lines raised, very numerous and distinct, and with 

 the longitudinal sculpture almost obsolete. Diameter 10, altitude of 

 aperture 6 mill. 



From sewer excavation, eight feet below the surface of the ground, 

 Cold Spring Park, Milwaukee, Wisconsin, collected by Charles E. 

 Brown. 



This pleistocene fossil, of which no living examples have yet been 

 seen, seems to differ from the typical bicarinatus sufficiently for 

 varietal distinction. Twelve specimens have been examined, which 

 are all uniform with the above description, and which are readily 

 distinguishable from typical bicarinatus. — Frank Collins Baker. 



