120 
1649 Trachydermon (Cyanoplax) Raymondi 
“Shell longer and narrower than T. Hartwegii. Back some- 
what keeled, varying in elevation. Color (1) olivaceous green 
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 laminz and be- 
hind the rather strong blue-white valve callus. Sinus and sutural 
lamine 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 smali 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 Chetopleura 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. 
