THE NAUTILUS. 101 



Lakes (Yarrow); near West Cliff", Custer Co.; ^licawber Mine, 

 10,000 feet, Custer County; Wales Canon, Pueblo County; 81ate 

 Creek, Summit Co. ; Buzzard Creek, Mesa Co. ; Black Lalcp Creek, 

 Summit Co. ; Chalk Creek, Cbaflee Co. ; Divide Creek, Garfield Co. ; 

 Plateau Creek, Mesa Co. ; Kremmling, Grand Co. ; near Egeria, 

 Routt Co. 



H. arborea form vu-idtil<( Ckll. (Science Gossip, 1889, 257.) 

 Horseshoe Bend Gulch, 10,000 ft., Custer Co., and other localities 

 in the same district. 



H. radiatula (Alder). Snguache Co. (Ingersoll) ; South Park 

 (Yarrow). This is electrina Gld., but it may rot be viridula Menke. 



H. radiatula form radiatula (Alder). Pueblo Co. ; Smith's Park, 

 Custer Co. ; Mesa Co. ; near Cattle Creek, Garfield Co. 



H. radiatula form viridescenti-alba (Jeffreys). Smith's Park, 

 Custer Co. ; ]\Iesa Co. 



H. minuscula (Binney). Mountains near Ft. Garland (Yarrow). 



H. (Coiiulua) fulva var. cherdna (Say). White Earth River 

 (Ingersoll) ; Scnith Park (Yarrow) ; Twin Lakes (Yarrow) ; near 

 West Cliff, Custer Co.; Micawber INIine, 10,000 ft., Custer Co.; 

 Pueblo Co. ; Kremmling, Grand Co. ; near Egeria, Routt Co. ; 

 Buzzard Creek, Mesa Co. ; Surface Creek, Delta Co. ; Divide Creek, 

 Garfield Co. ; Black Lake Creek, Summit Co. H. chersina seems 

 to me a pui'e synonym of fulva, but Mr. Ancey regards it as 

 probably distinct. 



HELICIDJE. 



Patula strigosa (Gould). Grand R. (Binney); Gilpin Gulch 

 (H. Prime) ; Blue River (Yarrow) ; Saguache (Yarrow). 



Patula strigosa form globosula nov. Small, globose, dark above 

 periphery with two bands, transverse grooved stride rather well 

 marked. Diam. 11 J, alt. 8^ mill. Black Lake Creek, Summit Co. 

 The specimen seems immature, but is remarkable as being the only 

 form I have seen in Colorado that is nearer to strigosa than Cooperi. 

 Is is doul)tless allied to var. Gouldi Hemphill. 



P. strigosa var. Cooperi W. G. Binney. Grand River (Binney) ; 

 Blue River Valley (Ingersoll) ; Gilpin Gulch (H. Prime) ; Will- 

 iams Canon, Manitou (M. E. Cusack) ; Morrison, Lyons, and St. 

 Vrain Canon (A. Eastwood); Gunnison (E. W. Roper); Middle 

 Park and North Park (Ingersoll) ; near Durango (A. Eastwood) ; 

 Micawber ]Mine, Custer Co.; Kremmling, Grand Co.; Egeria, 



