120 



1649 Trachydermon (Cyanoplax) Raymondi 



"Shell longer and narrower than T. Hartwegii. Back some- 

 what keeled, varying in elevation. Color (1) olivaceous gieen 

 mottled with white, sometimes with dark lateral streaks as in 

 Hartwegii, sometimes ruddy at the ridge, or (2) uniform blackish, 

 or (3) dark brown, uniform or with whitish flecks. Valves rather 

 strong, slightly beaked when unworn, the posterior (sutral) mar- 

 gins straight or slightly concave. Intermediate valves rather 

 rounded where they join the girdle, scalloping the inner border of 

 the latter; not distinctly divided into areas. Lateral areas hardly 

 or not raised (the diagonal being indistinct) evenly sculptured 

 with minute, equal granules. Central areas also evenly sculp- 

 tured throughout with similar granules, slightly finer on the 

 ridge. End valves with the same equal sculpture, the tail valve 

 with the mucro central and a little projecting. Interior light 

 blue, with darker stains at bases of the sutural lamina? and be- 

 hind the rather strong blue-white valve callus. Sinus and sutural 

 laminae as in Hartwegii. Slits in valve i, 8; valves ii-Vii, 1-1; 

 valve viii, 11; teeth of end valves blunt, thick, but not distinctly 

 bilobed. All teeth longer than the narrow, porous eaves. Girdle 

 narrow, black, or with small whitish spots, leathery, very minutely 

 papillose. Length (of type) 23, breadth 11 mm."Pilsbry, Nau- 

 tilus 8:46. 



Type locality: — San Francisco, Cal. Also Purissima and Mon- 

 terey, Cal., and Victoria, B. C. (C. F. Newcomb). 



Specimens from Bolinas, Cal., measure 12.5 mm. long, 7 wide. 



Named in honor of W. S. Raymond. 



1650 Trachydermon Hartwegii 



Pilsbry, Nautilus 8:45, discusses the relationship of this 

 chiton, referred by its author both to Chsetopleura and this genus. 



1651 Pupa blandi edentata 



Recorded from Mingusville, Montana, by Homer Squyer, Nau- 

 tilus 8:64, in a list of shells from that vicinity. 



1652 Pupa Holzingeri Sterki. 

 Mingusville, Mont. (Squyer). 



1653 Pupa decora Gould. 

 Mingusville, Mont. (Squyer). 



1654 Vitrea arborea Say. 



Mingusville, Mont. (Squyer), a "var. approaching V. breweri 

 Newc." 



1655 Vitrea radiatula Alder. 

 Mingusville, Mont. (Squyer), "rare." 



1656 Vallonia gracilicosta Reinh. 



Mingusville, Mont. (Squyer), and a var. near costata Say. 

 Utah. Dakota. 



1657 Vallonia perspectiva Sterki. 



Mingusville, Mont. (Squyer). Tenn. Ala. Iowa. 



1658 Planorbis umbilicatellus Cockerell. 

 Synonymy: — P. umbilicatus Taylor non Mull. 



Manitoba (type). Montana (Squyer), Colo. Iowa. Minn 

 See Nautilus 9:117. 



