88 BULLETIN 68, UNITED STATES NATIONAL MUSEUM. 



The above description is based upon two cotypes. One, an adult 

 shell (Cat. no. 168867, U.S.N.M.), has the last 10 whorls, having lost 

 the nucleus and probably the first two and one-half post-nuclear 

 turns, and measures: Length 9.7 mm., diameter 2.8 mm. It was 

 dredged by the U. S. Bureau of Fisheries steamer Albatross at station 

 3194 in 92 fathoms, on gray sand, bottom temperature 45°.9, off 

 Esteros Bay, California. The other (Cat. no. 196232, U.S.N.M.) was 

 collected by Mrs. Oldroyd at San Pedro, California, and has the 

 nucleus and 9 post-nuclear turns, and measures: Length 5.5 mm., 

 diameter 1.8 mm. Three specimens (Cat. no. 1962.33, U.S.N.M.) were 

 dredged by the Fisheries steamer Albatross at station 2902 in 53 

 fathoms, fine gray sand and mud bottom, temperature 45°, off Santa 

 Rosa Island. One in the collection of the University of California 

 comes from station 122, near Redondo; another in the same institu- 

 tion was dredged at station 12, off Point Vincent. Two (Cat. no. 

 196231, U.S.N.M.) were dredged in 12 fathoms at San Pedro by^Mr. 

 H. N. Lowe. Another specimen was dredged by the University of 

 California at station 30, off Catalina Island, and two at station 58, 

 off San Diego, California, the last two lots being in the L^^niversity 

 collection. 



TURBONILLA iPYRGISCUSj ANTEMUNDA, new species. 

 Plate 8, figs. 15, 15a. 



Shell broadly conic, milk-white with a moderately broad pale yellow 

 band at the periphery and another at the middle of the wdiorls between 

 the sutures of the same width. Nuclear whorls two and three-fourths, 

 helicoid, having its axis at right angles to that of the succeeding 

 turns, in the first of which it is about one-third immersed. Post- 

 nuclear whorls moderately rounded, appressed at the summit, 

 strongly contracted at the periphery, somewhat overhanging, orna- 

 mented by well-developed, narrow axial ribs, which become decidedly 

 enfeebled toward the summit. Of these there are 16 upon the first 

 to fourth, 18 upon the fifth to seventh, 20 upon the eighth, 22 upon 

 the ninth and penultimate whorl. Intercostal spaces about two and 

 one-half times as wide as the ribs, ornamented with a double series 

 of spiral markings, the first of which consists of seven strongly incised 

 and subequalh^ spaced pits between the sutures, the third and fourth 

 of which above the periphery bound the color band and are a little 

 closer spaced than the rest. The first one below the summit passes 

 over the axial ribs and gives them a truncated appearance; the others 

 pass up on the sides of the ribs but do not cross them. The second 

 series of spiral markings consist of very fine lines, of which three 

 occur between the peripheral series of pits and the second two occur 

 between the second and third, one between the fourth and fiftli, 

 two between the sixth and seventh. In addition to this sculpture 



