60 UNIVERSITY OF COLORADO STUDIES 



Rohwer); Box Elder in Larimer County, Magnolia at 8,500 feet, South Boulder Canyon 

 at 6,800 feet, mouth of Little Thompson Canyon near Lyons, Steamboat Springs and 

 along White River from Meeker to Marvine Lakes (Henderson). The right-hand figure 

 on page 175 of Part II of this catalogue appears to represent Vitrea hammonis, instead of 

 this species. 



Genus MILAX Gray 

 Milax gagates Draparnaud. 



Greenhouse specimens, Boulder (Cockerell, Nautilus, Vol. XXI, pp. 131-132), 

 designated var. plumbea, probably representing the hewstoni form. In the autumn of 

 191 1 Mrs. Max Ellis found the species living out-of-doors on University Hill, Boulder, 

 so it may have become incorporated in the outdoor fauna of the region. 



Genus AGRIOLIMAX Morch 



Agriolimax campestris Binney. 



North Boulder Creek at 9,000 feet, Copeland Park at 7,500 feet, both in Boulder 

 County (S. A. Rohwer); two miles east of Longmont (Spangler); Tolland (Betts); Rio 

 Blanco, Meeker and Marvine Lodge, all in Rio Blanco County, Kremmling and South 

 Boulder Canyon (Henderson). Probably some of these specimens should be referred to 

 the variety montanus, recorded from Tolland by Professor Cockerell. 



Agriolimax agrestis Linn. 



Greenhouse at Boulder, from light reddish to almost black (Cockerell, Nautilus, 

 Vol. XXI, pp. 131-132). Mutant reticulatus Muller, a large specimen, like Taylor's 

 pi. xv, f. 3, Monog. L. and F.-W. Moll. Brit. Is., found in Boulder, May, 1907, by Guy 

 Mason (Cockerell ms.). This exotic species has increased very rapidly at Boulder 

 during the last two years. In digging up Gladiolus bulbs in a lot on Pine Street in 

 October, 1908, the writer found them in the moist earth about the bulbs by dozens. 



Genus PYRAMIDULA Fitzinger 



Pyramidula cronkhitei anthonyi Pilsbry. 



Palmer Lake (Bethel); mouth of Troublesome Creek in Middle Park, Lake George 

 near Florissant, and Copeland Park in Boulder County (S. A. Rohwer); Floyd Hill 

 (Hand); Tolland and Sulphur Springs (Dodds); Florissant, and Minnehaha Falls on 

 Pike's Peak (Cockerell); Magnolia at 8,500 feet, Newcastle, eight miles east of Rabbit 

 Ears in southwest corner of North Park, and along White River from Meeker nearly to 

 Marvine Lakes (Henderson). The range of this species is on the whole lower than that 

 of the next, though they overlap. 



Pyramidula shimeki cockerelli Pilsbry. 



North Boulder Creek at 9,000 feet (S. A. Rohwer); northeast of Ohio City (F. 

 Rohwer); Ward at 9,000 feet (Dodds); Tolland (Betts, Henderson); west of Allen's 

 Park at 9,000 feet (Spangler); Pike's Peak at 8,900 feet, Boulder Canyon at 7,300 feet 

 (Cockerell); Floyd Hill (Hand). I have found this more abundant at Eldora, under 

 aspen logs in the bottom-lands, than anywhere else. Last summer in a couple of hours 

 my wife and I collected 474 specimens there, where it was the most common species 

 except Vitrina alaskana. 



