242 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
U. S. S. “Albatross,” station 3393, Gulf of Panama, in 1020 fathoms, mud, 
bottom temperature 309.8 F. U. S. N. Mus. 193,101. Also at station 3366, in 
1067 fathoms, globigerina ooze, off Panama, bottom temperature 37? F. ; at station 
2791, on the S. W. coast of Chile, in 677 fathoms, mud, bottom temperature 38? F. ; 
and at station 2919, off Cortez Bank, California, in 984 fathoms, mud, temperature 
889 E, 
The characteristics of the soft parts were described in the original publication. 
It may be added that Plewrotoma (Surcula) clara von Martens, from Patagonia, 
though much smaller, is evidently a member of this group. 
The immense range of the species already indicated will be greatly increased if 
with the reception of more and better material the following form is definitely 
fixed as a variety of persimilis, which at present seems doubtful. 
Irenosyrinx (persimilis) var ? leonis Darr. 
Shell small compared with the preceding species, white, of about seven evenly 
rounded whorls. Compared with the young of I. persimilis of the same size the 
whorls are more capacious, smoother, not flattened behind nor on the periphery ; 
the carinations of persimilis are wanting or represented only by an obsolete indi- 
cation of a ridge; the canal is wider and more recurved, the anal fasciole shows 
the markings of the sulcus to be wider and not quite so near the suture. Lon. 
of shell, 50; of last whorl, 38; of aperture, 29; max. diam., 18 mm. 
U. S. S. “ Albatross,” station 3074, off Sca Lion Rock, coast of Washington, 
in 877 fathoms, mud, temperature 369.6 F. U. S. N. Mus. 110,605. , 
Three specimens were obtained, of which all were more or less eroded. 
Irenosyrinx goodei Darr. 
Plate 19, figure 2. 
Leucosyrinz goodei Dall, Proc. U. S. Nat. Mus., 1889, 12, p. 300, pl. 6, ig. l. 
U.S. S. “Albatross,” station 2788, in 1050 fathoms, mud, bottom temperature 
309.9 F. 
Figured for comparison with Z. persimilis. 
Irenosyrinx ? crebristriata Dart, n. sp. 
Plate 13, figure 10. 
Shell of moderate size, white, covered with a pale yellow periostracum ; spire 
acute, a little shorter than the aperture ; whorls rounded, six in number exclusive 
of the (lost) nucleus; suture very distinct; axial sculpture none, except incre- 
mental lines, unless on the (eroded) apical whorls ; siphonal fasciole wide, ex- 
tending from the suture to an obscure ridge which forms the shoulder of the 
