183 



2726 Dentalium Carpenterianum 



2727 Dentalium megathyris 



2728 Diaphana Californica 



2729 Diplodonta aleutica 



Pribilof to Shumagin Islands. Attains a length of 25 mm. 



2730 Leptothyra paucicostata rubra 



2731 Limnaea Atkana 



Keep, West coast shells — error for Litorina Atkana? 



2732 Mangilia Painei 



2734 Mitra dolorosa 



2735 Miralda Californica 



2736 Odostomia Oldroydi 



2737 Odostomia inflexa 



2738 Patula Chiricahuana Ashmuni 



2739 Pecten Whiteavesi 



2740 Scala Sawinse 



2741 Siphonaria vernalis 



2742 Solariella unda 



Descriptions of Nos. 2726-2742 by Dall have not been seen — 

 all are West American. 



2743 Zonites Lansingii 



Shell imperforate, orbicular-depressed, shining, dark horn- 

 color, smooth above, at base substriate; suture impressed; whorls 

 5y 2 , rather convex, the last not descending, obsoletely angular at 

 the periphery, more convex at base, excavated around the um- 

 bilical region; aperture narrow, lunate; peristome acute, the right 

 margin thickened within by an obsoletely denticulated lamella, 

 columellar margin scarcely reflected. Greater diam. scarcely 3, 

 lesser 2.5, height 1.75 mm. — Bland. 



In damp moist places, among leaves, Astoria, Oregon. — Van- 

 couver Island. 



2744 Zonites Stearnsii 



Larger, more elevated and more distinctly striated, whorls 7, 

 with rather wider and more rounded aperture, but without the 

 lamella within the outer margin of peristome. Greater diam. 4, 

 lesser 3.5, height 2.5 mm. — Bland. 



Alaska (Dall). — Olympia, Wash. — Astoria and Portland, Ore. 



2745 Zonites Shepardi 



Described by Henry Hemphill, description not seen. 



2746 Pyramidella Adamsi Cpr. 



Synonymy: — P: conica variegata. — Obeliscus conicus jun. Cpr. 

 — 0: variegatus Cpr. 



Type locality: — Mazatlan. 



The specimens from California, referred to this in the past, 

 are probably all of other species. 



2748 Littorina pullata Cpr. 1864. 



San Pedro, Cal. — Mexico. Resembles L: scutulata, of a dark 

 reddish-brown, sometimes checked, with numerous fine spiral lines 

 of sculpture. 



2749 Lucapinella callomarginata Cpr. 

 San Pedro, Cal. — south. 



2750 Lyonsia inflata Conr. 



2751 Lyonsia nitida Conr. 



2752 Margarita lirulata subelevata. Cpr. 



2753 Margarita pupilla salmonea Cpr. 



