THE NAUTILUS. 



The bibliography ranges from 1829 to 1905. 



A list of bulletins issued by the TJ. S. Geol. Sur., under Series 

 C, Systematic Geology and Paleontology, is appended to this val- 

 uable monograph Mrs. M. Burton Williamson. 



The Urocoptid Mollusks from the Mainland of America 



IN THE COLLECTION OF THE U. S. NATIONAL MUSEUM. By Paul 



Bartsch. (Proc. U. S. Nat. Mus. 1906, pp. 109-160, 3 plates). This 

 paper deals chiefly with Mexican species, describing a number of new 

 species and subspecies, and several new subgenera of great interest. 

 The United States forms represented in the National Museum are 

 also reviewed, and two described as new: Holospira goldfussi 

 anacachensis, from the Anacacha Mts.,near Cline and Spotford, and 

 from near Eagle Pass, Texas. It difiers from yoldfussi by the fewer 

 and stronger ribs. Holospira (Haplocion) tantalus, from <l some- 

 where in Arizona or New Mexico." No comparisons are given, but 

 it is said to be distinct from H. pilsbryi. It is what has been reported 

 as pilsbryi from the above territories. H. pilsbryi is to be removed 

 from the U. S. list. 



The following errors or emendations require notice because they 

 enter into nomenclature: 



Microceramus texasianus (p. 158) is used for M. texanns Pils. 



Microceramus mexicanus (p. 159) should be credited to von 

 Martens, not Pfeiffer. 



Gselocentrum eiseni (p. 119) is used in place of G. eisenianum Pils. 



If these changes are intended as corrections or emendations, that 

 fact should, we think, have been stated; but the introduction of new 

 forms or spellings of specific names on any grounds is to be deprecated. 

 — H. A. P. 



Notes on Wisconsin Mollusca. By George H. Chadwick 

 (Bull. Wis. Nat. Hist. Soc, IV, pp. 67-99, 1906.) A valuable 

 annotated list containing 115 6pecies, giving their distribution 

 throughout the State, bibliography, etc. 



Notes on Some Land and Fresh Water Shells from 

 British Columbia. By J. F. Whiteaves (The Ottawa Naturalist, 

 XX, pp. 115-119, 1906). An interesting faunal list containing 

 upwards of thirty species. 



