176 UNIVERSITY OF COLORADO STUDIES 



Genus AGRIOLIMAX Morch. 



Agriolimaz campestris Binn. Fig. 19. 



Northrop, Wet Mt. Valley, Straight Creek, West Ten Mile 

 Creek, Blue River, Naomi, Little Blue Creek and Saguache 

 Creek, Cockerell Mss. 



This is our only native species of naked snails or so-called 

 -Agriolimax slugs, though there are several varieties or named forms, 

 referred to under the subspecies montanus. The records are 

 inserted as we find them, -without offering any conclusions as to the wisdom of recog- 

 nizing the various names. Our own specimens collected at Boulder were identified by 

 Dr. Pilsbry as campestr.is. 



Agriolimax campestris montanus Ing. 



Color Forms: Typicus (typical montanus), pale brown, foot-sole pale; intermedius, 



dark brown, foot-sole gray; tristis, very dark brown or brown black. Cockerell 15, 



358, 359- 



Limax montanus. Grand County, Hot Sulphur Spnngs, Ingersoll 35, 389, 394. 



Colorado, Dall 34, 366. 



Agriolimax montanus. Pueblo and Saguache Counties, Cockerell 22, 62, 63. 



Form typicus. Swift Creek, Saguache Creek, near Dillon, Naomi, Two Elk Creek, 

 Buzzard Creek and Little Blue Creek, Cockerell 15, 359, 360. Custer, Chaffee, Saguache, 

 Fremont, Summit, Eagle, Mesa and Gunnison Counties, Cockerell 14, 100. Canyon 

 City, Cockerell Mss. 



Form intermedius. Saguache Creek above Rock Cliff, Surface Creek, West Ten 

 Mile Creek, Wheeler, Black Lake Creek and East Fork Clear Water Creek, Cockerell 

 15, 359, 360. Saguache, Fremont, Pueblo, Custer, Summit, Mesa and Delta Counties, 

 Cockerell 14, 100. Canyon City, Grand Mesa, Wales Canyon, Surface Creek and 

 Short Creek, Cockerell Mss. 



Form tristis. East Fork Arkansas River in Lake County, Wheeler, West Ten 

 Mile Creek, near Dillon and Surface Creek, Cockerell 15, 359, 360. Lake, Summit 

 and Delta Counties, Cockerell 14, 100. Ward, Cockerell Mss. 



Agriolimax laevis campestris, var. montanus, castaneus, intermedius and tristis, 

 Colorado localities, Taylor 62, 134, 135. {Castaneus is a synonym of montanus.) 



Agriolimax agrestis Linn. Fig. 20. 



Forms rujesceus, brunneus and semirufus, Boulder, Cockerell 306, 90; Taylor 63, 



278, 279. 



One specimen liberated at West Cliff, 

 Cockerell 14, 100. 



This species was doubtless accident- 



FiG. ao.-Agriolimax agrestis. j^„y introduced, being a European species 



which has obtained a foothold in the eastern states. They were first found near the 



University campus at Boulder by Mr. L. C. Bragg, since which time we have found them 



in several places in the city. 



Genus PYRAMIDULA Fitzinger 

 Pyramidula cronkhitei anthonyi Pils. 



North Park (Barber), Ouray (Bland), Swift Creek, Black Lake Creek, Buzzard 

 Creek, Divide Creek and Colorado Springs (Cockerell), Vanatta Mss. 



Patula cronkhitei Newc. Hot Springs, Blue River Valley and Rio LaPlata, Inger- 

 soll 35, 397. This pl-obably should be referred to the next species. 



