THE NAUTILUS. 
127 
merous sharp spiral threads, with wider interspaces ; suture distinct, 
somewhat appressed ; base of last whorl somewhat attenuated; 
whorls little inflated, but not flattened ; umbilicus a mere chink ; 
aperture oval, higher than wide, rounded in front, the pillar simple, 
the margins thickened but not reflected. Lon. 110; max. diam. 
2 5 mm. 
This shell has the sculpture of B. rugiferus Sby., and somewhat 
the form of B. chemnitzioides Fbs., though shorter and with fewer 
whorls. It is fairly intermediate between Ncesiotus and Pleuropyr- 
gus. Two specimens were collected by the U. S. S. Albatross at 
Indefatigable Island. The species is named in honor of Herr Paul 
Reibisch who has recently worked up the Wolf collection from 
these islands. 
Buliroulus (Naesiotus) Fanneri n.s. 
Shell short, stout, pointed, with six whorls of which two are nepi- 
onic with the usual sculpture, while the others are marked only by 
lines of growth and microscopic, inconstant spiral striation, of 
which the most prominent lines are regularly spaced and micro¬ 
scopically beaded, when present; color pinkish or slightly brownish 
white, no peripheral pale band visible on the specimens which, how¬ 
ever, are not perfectly fresh ; whorls well rounded, umbilicus large 
and deeply pervious; aperture large, with a widely reflected lip, 
the outer lip much bent over on the body, closely approaching the 
pillar and united to it by a distinct callus. Lon. 11*0; max. diam. 
7*0 mm. 
This belongs to the B.jacobi group, and is about the size of small 
varieties of jacobi, but is more conical and stouter, and has an aper¬ 
ture very differently shaped and with a more broadly reflected lip 
than any other species from these islands. It was found with the 
preceding and is named in honor of Capt. L. L. Fanner, com¬ 
mander of the Albatross. The pillar is perfectly plain and with no 
sulcus or fold at the base. 
NOTE ON TASMANIAN ACM2EA AND ISCHNOCHITON. 
BY H. A. PILSBRY. 
Acmaea cantharus Reeve. 
The habitat of this species was said, by Reeve, to be New Zealand ; 
but Prof. Hutton, some years ago, corrected this error, stating that 
