66 PROCEEDINGS OF THE NATIONAL MUSEUM. foi- »«• 



Bcmge.— Bering Sea near Nunivak Island, in 9 to 85 fathoms, mudj 

 bottom temperature 39° F. W. H. Dall. 



This species belongs to the group including M. aleutica and M. 

 alaskensis Dall. 



MANGILIA GENOA, new species. 



Plate 8, fig. 6. 



Shell small, feebly sculptured, whitish with a yellowish underlayer, 

 and (on the spire one, on the last whorl two) darker spiral lines; 

 whorls six without the (lost) nucleus; suture distinct, anal fasciole 

 obscure; surface with uniform fine spiral striation; axial sculpture 

 of (on the last whorl about 15) faint narrow riblets extending en- 

 tirely over the whorl with wider interspaces; aperture narrow, canal 

 short, wide; anal sulcus faint; outer lip thin sharp, body and pillar 

 smooth. Height of shell, 6.5; of last whorl, 4; diameter, 2.5 mm. 

 Cat. No. 153051, U.S.N.M. 



E(tnge.—S2in Pedro, California, to the Gulf of California. 



This belongs to the group of M. variegata Carpenter, but has much 

 less developed sculpture and color markings. 



MANGILIA PHILODICE, new species. 



Plate 22, fig. 7. 



Shell small, white, with four or more whorls exclusive of the (lost) 

 nucleus; suture distinct, not appressed; whorls sloping behind, 

 rounded in front; axial sculpture of (on the penultimate whorl about 

 17) short rounded ribs with subequal interspaces, hardly extended 

 over the periphery and gradually becoming obsolete on the last 

 whorl; incremental lines somewhat conspicuous on the base where 

 they slightly reticulate the spiral sculpture; the latter comprises 

 three prominent cords on the periphery equal and equidistant, swollen 

 where they over ride the ribs, and feebler on the last whorl ; the anal 

 fasciole carries finer equal spiral threads, the base 10 or more some- 

 what larger and more nearly adjacent as they approach the canal; 

 aperture rather narrow, outer lip solid, sharp-edged, anal sulcus 

 large, rounded, close to the suture, inner lip erased, canal short, deep, 

 slightly recurved. Height of last and three preceding whorls, 7.5 ; 

 of last whorl, 5 ; diameter, 3 mm. Cat. No. 208916, U.S.N.M. 



Range.— '^t2it\on 4454, off Point Pinos Light, Monterey Bay, Cali- 

 fornia, in 65 to 203 fathoms, mud and gravel. U. S. Bureau of 

 Fisheries. 



MANGILIA PATAGONIENSIS, new species. 



Shell minute, white, with a blunt nucleus of one and a half whorls 

 the apex bulbous, and about four subsequent whorls ; suture appressed, 

 find fasciole somewhat concave; axial sculpture of (on the penulti- 

 mate whorl about 18) short rounded obliquely protractive ribs with 



