THE MOLLUSCA OF COLORADO.' PART IIP 



By Junius Henderson 



This paper has for its purpose the recording of material in the 

 University of Colorado Museum obtained since the publication of 

 Parts I and II, by the following collectors: H. A. Aurand, E. Bethel, 

 L. C. Bragg, Norman deWitt Betts, T. D. A. Cockerell, J. S. Congdon, 

 Albert Dakan, G. S. Dodds, Terry Duce, A. H. Felger, Wm. Fleming, 

 R. D. George, E. E. Hand, Harvey C. Markman, Miss Rosamond 

 Patton, Frank Rohwer, S. A. Rohwer, W. W. Robbins, D. W. Spang- 

 ler, E. R. Warren and the writer. These records greatly extend our 

 knowledge of the distribution of many of the species, but the time 

 has not yet come for a full discussion of the matter of distribution. 



The several greenhouse records of exotic species are included only 

 because they may become important as matters of history in case 

 any of those species become hereafter incorporated in the out-of-door 

 fauna. 



Ingersoll 3 long ago recorded dead shells of Area and Truncatella, 

 marine genera, from a pond between Animas and La Plata, with 

 living Crustacea of the family Astacidae, which records I omitted 

 from the former parts of this catalogue, but for the purpose of making 

 this series of papers an index to all the records which have come to 

 my attention it seems better to mention them. It is much more likely 

 that the shells were thrown away by someone who had collected them 

 at the seashore — as such occurrences are not infrequent — than that 

 they were natives of that locality, but the presence of the crabs is not 

 so easily accounted for if, as Ingersoll said, they are really of salt- 

 water species, which may well be doubted. 



■ Part I of this paper appeared in 1907 in Vol. IV of these Studies, at pages 77 to 06, inclusive, and con- 

 tained an introduction, bibliography, locality list, key to species and an annotated catalogue of the Pelecypoda. 

 Part II appeared in the same volume, at pages 167 to 1S5, inclusive, and consisted of an annotated catalogue 

 of the Gastropoda. 



Publication of the Colorado Biological Survey, No. 7. Parts I and II of this contribution were issued 

 before the organization of the Biological Survey, hence they are not included in the Survey publications. 

 Popular Science Monthly, Vol. XLXIX, p. 4S, 1876. 

 S3 



