186 NEW WEST AMERICAN SHELLS DALL. 



The following memoranda will serve to indicate some of the more re- 

 markable new forms of the northwest coast, dredged by the Albatross 

 during the past year or two and of which more detailed descriptions 

 with figures are in preparation. 



Terebratella occidentalis Dall var. obsoleta nov. 



Shell more rounded than the original type with the sharp radiating 

 ribs and sulci obsolete and represented chietiy by the brilliant scarlet 

 lines of color which in the type surmount the ribs. TJ. S. Steamer 

 Albatross, station 2984, in 113 fathoms, off Cerros Island, Lower Cali- 

 fornia. 



Buccinum strigillatum, sp. nov. 



Shell with seven fully rounded whorls, deep suture, and hirsute 

 epidermis ; sculpture of numerous narrow flattened primary ridges with 

 subequal channelled interspaces; aperture not expanded but with a 

 wide deep sinus near the shoulder. Color white; length 42, breadth 27 

 millimetres. U. S. Steamer Albatross, station 3170, off Guadelupe Isl- 

 and, Lower California, in 167 fathoms. 



Buccinum taphrium, sp. uov. 



Shell thin, slender, with polished brown epidermis, with fine spiral 

 strife and conspicuous zigzag or spiral malleations ; six-whorled, acute ; 

 suture deeply channelled ; aperture white, with thick reflected lip and 

 continuous thick callus on the concave i)illar. Length of shell 40, 

 breadth 18, length of aperture 15 millimetres. U. S. Steamer Alba- 

 tross, station 3330, off Akutan Island, Bering Sea, Alaska, in 351 

 fathoms. 



Mohnia Frielei, sp. nov. 



Shell small, solid, six-whorled with short canal ; white, covered with a 

 dull green epidermis ; upper whorls with numerous fine transverse 

 ribs, labt whorl smooth, no spiral sculpture. Length 16, breadth 7.5, 

 aperture and canal 8 millimetres. U. S. Steamer Albatross, station 

 2860, off coast of British Columbia in 876 fathoms. 



Strombella Middendorfii, sp. nov. 



Closely resembling 8. norvegica, but sharply, finely, spirally incised 

 all over, and when adult, with a strong red yellow or brown reflected 

 lip. Tritonium norvegicum Midd. (non Chemnitz) probably ; length 

 110, breadth 60 millimetres. The sculpture is of sharp, fine grooves, 

 not the obsolete spiral strife occasionally seen on 8. norvegica. U. S. 

 Steamer Albatross, stations 3216 and 3253, ofl" Unimak Pass, Alaska, 

 in 36-61 fathoms. 



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